CHAPTER 1 - THE AVIATION SUPPORT EQUIPMENT (AS) RATING
AS-7601 SUPPORT EQUIPMENT CRYOGENIC MECHANIC
AS-7614 SHORE-BASED MOBILE ELECTRIC POWER PLANTS (MEPPS) IMA TECHNICIAN
TYPES OF MAINTENANCE
Preoperational Inspections
MAINTENANCE REQUIREMENTS CARDS (MRC)
EQUIPMENT REMOVAL, REPAIR, AND INSTALLATION
Reinstallation Of Equipment
Figure 1-2.--Silhouette of gas vapors falling. Caution: Gasoline vapors are heavier than air.
JET PROPULSION FUELS (JP)
AUTOMATIC TRANSMISSION FLUID.
CORROSION CONTROL
SUPPORT EQUIPMENT CORROSION CONTROL
CORROSION PUBLICATIONS
SUPPORT EQUIPMENT ISSUE/RECEIPT
AVIATION SUPPORT EQUIPMENT
Table 1-1.--Equipment Identification Codes
Table 1-1.--Equipment Identification Codes--Continued
Figure 1-3.--NC-8A/A-1 mobile electric power plant.
Figure 1-6.--A/S37A-3 shipboard mobile electric power plant.
Figure 1-8.--A/M27T-5 portable hydraulic power supply.
Figure 1-12.--H-250-1 hydraulic fill unit.
Figure 1-15.--A/S32A-30 aircraft towing tractor.
Figure 1-17.--A/S32A-42 aircraft towing tractor.
Figure 1-21.--A/M32C-17 mobile air-conditioner.
AIRCRAFT MAINTENANCE EQUIPMENT
Figure 1-25.--Variable height tripod jack, two-leg extension.
Figure 1-30.--A/S48M-2 diesel servicing platform.
Figure 1-32.--Net-4 transportation trailer.
Figure 1-36.--TMU-70 liquid oxygen servicing unit.
CHAPTER 2 - CHASSIS AND ATTACHING SYSTEMS
Figure 2-1.--Typical frames.
Figure 2-3.--Packing wheel bearings.
SUSPENSION SYSTEMS
Figure 2-4.--Coil spring suspension.
Figure 2-5.--Coil and leaf springs.
Figure 2-7.--Diagram of a steering mechanism.
Figure 2-9.--Steering gear unit of the cam and lever type.
Figure 2-10.--Recirculating ball-type steering gear.
STEERING SYSTEM MAINTENANCE
Figure 2-14.--A. Negative caster; B. positive caster.
Power Steering Maintenance
Figure 2-17.--Power steering system.
Figure 2-18.--Tie rod end showing clamp bolt and adjusting threads.
Other Maintenance Procedures
EXTERNAL CONTRACTING BRAKES.
Figure 2-21.--External contracting transmission parking brake.
Figure 2-23.--Wheel brake assembled and exploded view.
Figure 2-25.--Front wheel brake assembly.
Figure 2-26.--Primary and secondary brake shoes--self-energizing action.
SERVICING CALIPER ASSEMBLIES
Internal Expanding (Expander Tube) Brakes
Figure 2-30.--Expander tube brake. A. exploded view; B. assembled view; C. cross-sectional view.
Figure 2-31.--Sectional view of a brake drum.
Figure 2-32.--Brake assembly, self-adjusting.
Mechanical Brake Systems
Figure 2-33.--Mechanical brake system--cables.
Figure 2-35.--Typical hydraulic brake system.
Figure 2-37.--Hydraulic brake master cylinder.
Figure 2-38.--Hydraulic brake master cylinder--operation of two-way valve.
Master Cylinder Repair
Figure 2-40.--Bleeding hydraulic system--pressure method.
Figure 2-41.--Hydraulic system of the A/S32A-37 tow tractor.
Figure 2-42.--Hydrovac vacuum power brake cylinder.
Figure 2-43.--Hydrovac operation--released position.
Figure 2-44.--Hydrovac operation--applied position.
Figure 2-45.--Air-over-hydraulic brake system.
Figure 2-47.--Power train.
TRANSMISSIONS
Figure 2-48.--Basic fluid coupling, using air in place of fluid
Figure 2-51.--Fluid coupling oil flow "bounce back" effect.
Figure 2-52.--Torque converter, multi-element.
Figure 2-53.--Effects of oil jetstream on a flat surface and on a curved surface.
Converter Hydraulic System
Figure 2-56.--Typical sprag assembly, overrunning clutch.
Figure 2-57.--Direction of gear rotation.
Figure 2-59.--Members of a simple planetary gear system.
Figure 2-61.--Views of six speed/torque ratios for a simple planetary gear system.
CONSTRUCTION OF AN AUTOMATIC TRANSMISSION
Figure 2-65.--Typical hydraulic control unit and it's components.
HYDRAULIC CONTROL SYSTEM
Figure 2-68.--Centrifugal and fluid velocity governors
Figure 2-69.--Shift valve.
Figure 2-70.--Throttle valve.
Figure 2-72.--Functional shift valve controls.
Figure 2-73.--Neutral (N) operating range.
NEUTRAL RANGE
Figure 2-74.--Low (L) operating range.
Figure 2-75.--Drive (D) operating range.
Figure 2-76.--"Kickdown" forced shift position.
Figure 2-77.--Reverse (R) operating range.
TRANSMISSION MAINTENANCE
Figure 2-78.--Typical automatic transmission.
Torque Converters and Fluid Couplings
Figure 2-79.--Typical transmission oil passages.
Figure 2-80.--Typical hydraulic control unit.
Table 2-1.--Allison Four-Speed Automatic Transmission Troubleshooting Chart
Table 2-1.--Allison Four-Speed Automatic Transmission Troubleshooting Chart--Continued
Service Diagnosis and Repair of Automatic Transmissions
TRANSFER CASES
Figure 2-81.--Propeller shaft assembly.
Figure 2-83.--Ring gear and pinion.
Figure 2-86.--Construction of center cam.
Figure 2-87.--Operation of no-spin differential during
Figure 2-90.--Bearing mounting and adjustment nuts of full floating construction.
Figure 2-91.--Typical exhaust system.
Figure 2-92.--Support Equipment tire/wheel maintenance certification.
Figure 2-93.--Support equipment tire/wheel maintenance requirements.
Figure 2-94.--Solid and split rims.
WHEEL AND TIRE MAINTENANCE
DEMOUNTING A TIRE
Figure 2-95. - Demountable flange teardown and buildup
Figure 2-96.--Tire inflator assembly kit.
Tire Inflation Safety Cage
INSTALLING THE WHEEL ON THE VEHICLE
SAFETY REVIEW
Figure 3-1.--Simple external and internal combustion engines.
Figure 3-2.--Cylinder, piston, connecting rod, and crankshaft for a 1-cylinder engine.
Figure 3-3.--Piston top dead center (TDC).
Figure 3-5.--Four-stroke cycle in a gasoline engine.
ENGINE CYCLES
Figure 3-6.--Two-stroke cycle in a diesel engine.
Figure 3-7.--Crankshaft for a 6-cylinder engine.
Figure 3-8.--Four-stroke cycle diesel engine.
Figure 3-9.--Typical cylinder arrangements.
Figure 3-11.--Torque wrench in use, tightening main bearing stud of an engine.
Figure 3-12.--Bore and stroke of an engine cylinder.
Figure 3-13.--Compression ratio is ratio between views (A) and (B)
Figure 3-14.--Typical valve timing diagrams.
STATIONARY PARTS OF AN ENGINE
Figure 3-16.--Cylinder block and components.
Figure 3-18.--Cylinder of an air-cooled engine.
Figure 3-20.--(A) Dry-type liner for 2-cycle General Motors series engines. (B) Section through series 71 block.
Figure 3-21.--Cylinder head for L-head engine.
Figure 3-22.--Cylinder head for overhead valve engine.
Figure 3-23.--Intake and exhaust manifolds.
Figure 3-24.--Engine overhaul gasket kit.
MOVING PARTS OF AN ENGINE
Figure 3-25.--Piston and connecting rod (exploded view).
Figure 3-27.--Piston assembly of General Motors series 71 diesel engine.
Figure 3-29.--Piston pin types.
Figure 3-31.--Fitting piston ring and installing piston.
Figure 3-32.--Checking connecting rod alignment.
Figure 3-34.--Crankshaft and throw arrangements commonly used.
Figure 3-35.--Sectional view of a typical vibration damper.
Figure 3-37.--Camshaft and bushings.
Figure 3-39.--Valve operating mechanism for an overhead valve engine.
Figure 3-40.--Operation of a hydraulic valve tappet or lifter.
Figure 3-42.--Hydraulic valve lifter.
Figure 3-43.--Valve head and set angle.
Figure 3-45.--Valve spring compressors for L-head and valve-in-head engines.
Figure 3-48.--Using a valve seat dial guage.
Figure 3-49.--Valve seat grinding equipment.
Figure 3-53.--Valve seat too wide and low in block.
Figure 3-58.--Typical sleeve-type bearing half.
Figure 3-59.--Oil clearance between bearing and shaft.
Figure 3-60.--Effect of a metallic particle embedded in bearing material (Babbit lining).
QUICK ENGINE CHANGE CONCEPT
ANTIKNOCK QUALITY AND DETONATION
Figure 4-1.--Combustion process.
Figure 4-2.--Typical fuel system for a gasoline engine.
Figure 4-4.--Coil-type gauge circuit.
Figure 4-5.--Fuel pump with attached filter bowl.
Figure 4-8.--Types of fittings used on fuel lines. (A) Flared. (B) Compression. (C) Soldered.
Figure 4-10.--Simplified carburetor.
Figure 4-11.--Simplified carburetor with throttle valve.
Figure 4-13.--A simple idle and low-speed circuit.
Figure 4-16.--Vacuum set-up high-speed circuit.
Figure 4-17.--Carburetor accelerator pump circuit.
Figure 4-18.--Spring-loaded poppet valve in choke valve.
Figure 4-21.--Automatic choke with thermostatic coil mounted in manifold.
Figure 4-22.--Wet-type air cleaner.
Figure 4-24.--Flow of exhaust gases around intake manifold.
Figure 4-25.--Exhaust pipe, muffler, and tail pipe.
GASOLINE ENGINE EMISSIONS
THE DIESEL FUEL SYSTEM
Figure 4-26.--Comparison of sequence of events in diesel and gasoline 4-cycle engines.
COMBUSTION CHAMBERS
Figure 4-28.--Diesel engine precombustion chamber.
GOVERNORS
SPRING-LOADED CENTRIFUGAL GOVERNORS
Figure 4-30.--Simple mechanical governor.
OVERSPEED SAFETY DEVICES
DIESEL FUEL SYSTEM COMPONENTS
Figure 4-33.--Fuel filter assembly with replaceable element.
Figure 4-35.--Cutaway view of vane-type fuel pump.
Figure 4-36.--Vanes and rotor in housing of a vane-type fuel pump
Figure 4-37.--Roosa Master fuel injection pump (Model DC).
Figure 4-38.--Pump rotating parts (Model DC).
Figure 4-41.--Rotor in charging position with the rollers between the cam lobes (DC pump).
Figure 4-45.--Regulating piston in pressure regulating position
Figure 4-46.--Fuel flow in speed advance operation.
Figure 4-47.--Diagram of typical General Motors diesel fuel system.
COLD WEATHER STARTING DEVICES
DIESEL FUEL SYSTEM MAINTENANCE
GENERAL SERVICING AND MAINTENANCE
MAINTAINING INJECTION EQUIPMENT
Figure 4-50.--Cleaning injector spray nozzle holes.
Figure 4-52.--Positioning rear injector rack control lever.
Table 4-1.--Diesel Engine Troubleshooting Chart
Table 4-1.--Diesel Engine Troubleshooting Chart - Continued
Table 4-1.--Diesel Engine Troubleshooting Chart - Continued
Table 4-1.--Diesel Engine Troubleshooting Chart - Continued
Table 4-1.--Diesel Engine Troubleshooting Chart - Continued
Table 4-1.--Diesel Engine Troubleshooting Chart - Continued
CHAPTER 5 - INTERNAL COMBUSTION ENGINE COOLING AND LUBRICATING SYSTEMS
Figure 5-1.--Air-cooled engine.
Maintaining the Air-Cooled System
Figure 5-3.--Tubular radiator core construction.
Figure 5-4.--Radiator pressure cap.
Figure 5-5.--Water pump.
Figure 5-6.--A thermostat in operation.
Figure 5-7.--Bellows thermostat.
SERVICING THE LIQUID-COOLING SYSTEM
Figure 5-10.--Reverse flushing of water jackets.
Table 5-1.--Permanent Antifreeze Needed Per Gallon of Cooling System Capacity
REPAIRING COOLING SYSTEM COMPONENTS
REPAIRING COOLING SYSTEM COMPONENTS - Continued
Figure 5-11.--Testing a thermometer.
ENGINE LUBRICATION SYSTEMS
Figure 5-12.--Gear oil pump.
Figure 5-13.--Rotary oil pump.
Figure 5-14.--Fixed oil strainer.
Figure 5-17.--Oil temperature regulator (cooler).
Figure 5-20.--Combination splash force-feed lubrication system
LUBRICATION SYSTEM MAINTENANCE
Figure 5-22.--Positive crankshaft ventilation.
Servicing Oil Lines, Fittings, and Strainers
Oil Pump and Relief Valve
Figure 6-1.--Symbols commonly used in electricity.
Figure 6-2.--Schematic diagram.
Figure 6-3.--Wiring diagram.
Figure 6-4.--Codes for wiring functions.
Figure 6-5.--Alphanumeric wire identification code.
Wire Support and Protection
Figure 6-6.--Example of wire identification code use.
High-Voltage Precautions
Figure 6-8.--Battery construction.
Figure 6-10.--Specific gravity temperature correction chart.
Figure 6-11.--Potable constant potential battery charger.
Activating a Dry-Charged Battery
MAINTENANCE AND TESTING
CHARGING SYSTEMS
Figure 6-12.--Generating direct-current electrical energy.
Figure 6-14.--A shunt-wound generator.
Figure 6-16.--Sectional view of dc generator.
Figure 6-17.--A simple alternator.
Figure 6-18.--A basic alternator with six pairs of poles in the rotor
Figure 6-22.--A disassembled alternator.
Figure 6-24.--View of an ac generator slip ring end frame assembly.
Figure 6-26.--Testing the rotor for grounds, shorts, and opens.
Figure 6-29.--Testing diodes with a test lamp.
Bearing Replacement and Lubrication
Figure 6-31.--Installing diodes.
Figure 6-32.--Three-unit, vibrating contact, dc regulator.
Figure 6-33.--Dc charging circuit with a vibrating-contact regulator.
TWO-UNIT VIBRATING-CONTACT AC REGULATOR
Figure 6-35.--Ac charging circuit using a vibrating-contact regulator.
SEMITRANSISTORIZED, TWO-UNIT, VIBRATING-CONTACT REGULATOR
Figure 6-37.--Ac charging circuit using a semitransistorized regulator.
Figure 6-39.--Ac circuit using a fully transistorized regulator.
MAINTENANCE AND REPAIR
Two-Unit Vibrating-Contact Regulator
Figure 6-40.--Voltage regulator test.
Conventional Ignition Systems
Figure 6-41.--Conventional battery ignition system.
Figure 6-42.--Cutaway view of an ignition coil.
Figure 6-43.--Side and top view of a distributor.
Figure 6-45.--Transistor controlled magnetic pulse battery ignition system.
Figure 6-46.--Comparison of the three basic ignition systems.
Figure 6-47.--Correct coil polarity and current flow for a negative grounded system.
Figure 6-48.--Voltmeter connections for resistance tests of the primary circuit.
Starting Ignition Circuit Test
Figure 6-49.--Examples of spark plug appearances.
Figure 6-51.--Relationship of dwell and point gap.
Figure 6-52.--One method of checking coil polarity.
Figure 6-53.--Spark plug cleaning and testing machine.
Figure 6-55.--Distributor used with transistorized ignition system
Figure 6-59.--Harness connector No. 3 test.
Figure 6-63.--Control unit No. 5 test.
SECONDARY ELECTRICAL SYSTEM TROUBLESHOOTING
Figure 6-65.--Electric starting system.
Figure 6-66.--Sectional view of a heavy-duty starter.
Figure 6-68.--Solenoid shift starter and overrunning clutch drive.
Figure 6-69.--Control system for a starter with overrunning clutch drive.
Figure 6-70.--Control system for a starter with a Bendix drive
Starter Lockout Relay
Figure 6-72.--Tester connections for a battery capacity test.
Voltage Drop (Resistance) Tests
Figure 6-74.--(A) Simplified automotive ammeter; (B) Wiring diagram showing ammeter in the charging circuit.
Figure 6-75.--Coil operated fuel gauge circuit.
Figure 6-76.--Thermostatic fuel gauge circuit.
Figure 6-78.--(A) Oil pressure sending unit; (B) Schematic diagram of balancing coil oil pressure indicating system.
Figure 6-79.--Electrical temperature gauge.
OIL PRESSURE LIGHT
Figure 6-82.--(A) Speedometer; (B) Tachometer.
Figure 6-83.--Speedometer and tachometer drive shaft.
Figure 6-85.--(A) Total odometer; (B) Trip odometer.
Figure 6-86.--Electrical speedometer-tachometer.
Figure 6-87.--Electrical vibrator-type horn.
Figure 6-89.--Pictorial diagram of a directional signal system.
Figure 6-92.--Schematic diagram of a three-speed windshield wiper
AUXILIARY POWER RECEPTACLES
Figure 6-94.--Sealed beam headlight installation.
Figure 6-96.--Rear marker and blackout driving lights.
Figure 6-98.--Blackout light switch and connection.
Figure 6-99.--Light relay wiring diagram.
FUSES AND CIRCUIT BREAKERS
Figure 7-1.--Resistance chart of common conductors, semiconductors, and insulators.
Figure 7-2.--Junction diode.
Figure 7-5.--Checking a diode with an ohmmeter.
Figure 7-7.--NPN transistor--(A) NPN diagram; (B) schematic symbol.
Figure 7-10.--Simple circuit using a transistor as a switch.
Figure 7-11.--Testing a transistor's gain with an ohmmeter.
Figure 7-13.--Silicon-controlled rectifier--(A) physical PNPN structure; (B) two transistor analogy; (C) SCR internal circuitry; (D) SCR symbols.
Figure 7-14.--Magnetic field of a current-carrying conductor.
Table 7-2.--B, H, and for Common Magnetic Materials
Figure 7-15.--Graph of four magnetic materials--(A) magnetization curves; (B) permeability curves.
APPLICATION OF SEMICONDUCTOR DEVICES AND MAGNETIC AMPLIFIERS
Figure 7-20.--Views of line voltage-sensing bridge (BRDG).
Figure 7-21.--Left-hand rule for generators.
Figure 7-23.--Output voltage of an elementary generator during one revolution.
DC GENERATORS
Figure 7-24.--Graph of the output of a simple dc generator.
Figure 7-26.--Voltage output characteristics of the series, shunt, and compound-wound generators.
Figure 7-27.--Simplified solid-state dc voltage regulator.
Figure 7-28.--Types of ac generators.
Figure 7-29.--An ac generator pictorial.
Figure 7-30.--Ac generator schematic drawings.
Figure 7-31.--AN/USM-128A electrical test set.
Figure 7-32.--Electrical frequency control circuits.
Types of AC Generators
Figure 7-33.--Wye-delta voltage relationships.
Figure 7-34.--Diagram of a brushless ac generator excitation system.
Figure 7-35.--An ac voltage regulator (VR2) simplified schematic.
Figure 7-36.--A dc power supply circuit.
Figure 7-37.--Internal cooling fans of a typical generator.
UNGROUNDED SYSTEMS
NC-2A MOBILE ELECTRIC POWER PLANT
Table 7-3.--Leading Particulars for the NC-2A
Figure 7-40.--Engine starting circuit.
Figure 7-41.--Engine control panel.
Figure 7-43.--Engine governor and dc power control.
DC POWER CONTROL AND DISTRIBUTION
AC POWER CONTROL AND DISTRIBUTION
Figure 7-45. - AC power control and distribution circuit
Figure 7-47.--NC-8A mobile electric power plant.
Figure 7-48.--Cutaway view of an NC-8A generator.
Figure 7-49.--AC power output system, simplified schematic.
Figure 7-51.--NC-8A fault board.
Figure 7-52.--Simplified schematic for fault locator switch.
Figure 7-53.--NC-8A self -propulsion package.
MMG-1A MOBILE MOTOR-GENERATOR SET
Figure 7-56.--MMG-1A mobile motor-generator set (internal view).
Figure 7-58.--DC input change board.
ELECTRICAL SYSTEM MAINTENANCE
Table 7-4.--DC Generator Troubleshooting Chart
Table 7-4.--DC Generator Troubleshooting Chart - Continued
Figure 7-59.--Models of attachable head plugs.
Table 7-5.--Leading Particulars for the DA-675/MSM Load Bank
Table 7-5.--Leading Particulars for the DA-675/MSM Load Bank - Continued
CONTROLS, INDICATORS, AND EXTERNAL CONNECTION FACILITIES
Figure 7-61.--Load bank with access doors open.
Figure 7-64.--AC control panel.
Table 7-6.--Controls and Indicators for the master Control Panel
Table 7-7.--Controls and Indicators for the DC Control Panel
Table 7-8.--Controls and Indicators for the AC Control Panel
Table 7-8.--Controls and Indicators for the AC Control Panel - Continued
OPERATING PROCEDURES
Split Bus DC Operation
Split Bus DC Operation - Continued
Figure 7-65.--Kilowatts (KW) chart.
Normal Shutdown Procedure
FAILURE OF THE LOAD BANK TO OPERATE
ELECTRICAL SAFETY PRECAUTIONS
Low-Voltage Precautions
CHAPTER 8 - HYDRAULIC SYSTEMS AND EQUIPMENT
Figure 8-1.--Transmission of force by liquids.
Figure 8-3.--Multiplication of forces.
Figure 8-4.--A 10-ton hydraulic jack.
COMPONENTS OF HYDRAULIC SYSTEMS
Figure 8-5.--Typical hydraulic reservoir.
Figure 8-6.--Hydraulic Reservoir Assembly A/M27T-5.
Figure 8-7.--Fluid Service Cart, Model 310.
Figure 8-11.--Principles of operation of the internal gear group
Reciprocating Pumps
Figure 8-13.--Single-action hydraulic hand pump.
Figure 8-15.--Fixed displacement piston pump.
Figure 8-16.--Variable displacement, stroke reduction pump with variable cam plate.
Figure 8-17.--Variable displacement axial piston pump.
Figure 8-18.--Different types of hydraulic filter elements.
Figure 8-20.--Graphic comparison of particle sizes.
Figure 8-21.--Micronic filter.
Figure 8-22.--Full flow, bypass hydraulic filter.
Figure 8-23.--Full flow bypass, electrical indicating hydraulic filter.
Figure 8-25.--Typical high-pressure support equipment filter assembly
Flow Control Valves
Figure 8-26.--One-way restrictor (check valve).
PRESSURE REGULATOR VALVES
Figure 8-29.--Pressure regulator in the cut-in state (view A); and the cut-out state (view B).
Figure 8-31.--Operation of a rotary spool valve.
CLOSED-CENTER DIRECTIONAL CONTROL VALVES
Figure 8-34.--Open-center directional control valve.
ACTUATORS (ACTUATING CYLINDERS)
Figure 8-35.--Typical accumulators.
Figure 8-37.--Typical cross-sectional view of a double-acting actuating cylinder.
Figure 8-38.--Bourdon tube.
Figure 8-39.--A/M27T-5 control panel, controls, instruments, and gauges.
Figure 8-40.--Pressure gauge snubber.
HYDRAULIC MOTORS
HYDRAULIC SYSTEMS
Figure 8-44.--Hydraulic system with a relief valve incorporated
TYPES OF HYDRAULIC SYSTEMS
Figure 8-47.--Basic open-center system.
CLASSES OF CONTAMINATION
CONTAMINATION CONTROL
CONTAMINATION CHECKS
Figure 8-48.--Contamination analysis kit.
TROUBLESHOOTING AND MAINTENANCE
TROUBLESHOOTING AND MAINTENANCE - Continued
TROUBLESHOOTING AND MAINTENANCE - Continued
TROUBLESHOOTING AND MAINTENANCE - Continued
CHAPTER 9 - PNEUMATICS
NITROGEN
Figure 9-2.--Portable high-pressure nitrogen cylinder.
Figure 9-3.--Portable high-pressure nitrogen cylinder schematic
RECHARGING THE NITROGEN CYLINDER
Table 9-1.--Portable High-Pressure Nitrogen Cylinder Troubleshooting Chart
Figure 9-4.--A/M26U-4 (NAN-4) nitrogen servicing unit.
Figure 9-6.--A/M26U-4 system nitrogen flow diagram.
OUTLET PRESSURE GAUGES
Figure 9-7.--Flow during a motor and pump assembly cycle.
Figure 9-8.--Motor and pump assembly.
CHARGING AN EXTERNAL SYSTEM
RECHARGING THE NITROGEN SERVICING UNIT
PRESSURE REGULATOR
Figure 9-9.--Pressure regulator assembly.
VALVES AND OTHER COMPONENTS
Figure 9-11.--Purifier assembly.
Table 9-2.--A/M26U-4 Troubleshooting Chart
LOW-PRESSURE AIR COMPRESSORS
LOW-PRESSURE AIR COMPRESSORS - Continued
LOW-PRESSURE AIR COMPRESSORS - Continued
CHAPTER 10 - LIQUID AND GASEOUS OXYGEN SYSTEMS AND EQUIPMENT
Figure 10-2.--2,000 gallon capacity liquid oxygen storage tank
Figure 10-3.--Corrugated flexible metal hose.
Figure 10-5.--TMU-70/M low-loss, closed-loop, liquid oxygen servicing trailer.
Figure 10-6.--LOX servicing trailer schematic diagram.
The Transfer Lines and Piping System
Table 10-1.--LOX Servicing Trailer Controls and Indicators
Table 10-1.--LOX Servicing Trailer Controls and Indicators - Continued
Figure 10-7.--Physical layout of the LOX servicing trailer's controls and indicators.
Transferring LOX to the Aircraft
THE STORAGE TANK
Figure 10-8.--Toggle valve assembly.
Figure 10-9.--Relief valve and rupture disc.
THE EVAPORATION LOSS RATE TEST
Table 10-5.--The Storage Tank Piping Test
Table 10-6.--Troubleshooting Chart
LOX CONTAMINATION
Inert Solid Constituents
INER SOLID CONSTITUENTS
Figure 10-10.--FCS 2001 cryogenic sampler.
Figure 10-11.--Aircraft liquid oxygen system gas purging set.
Standards of Cleanliness
GASEOUS OXYGEN
Figure 10-12.--A/U26U-1 oxygen servicing unit.
Figure 10-13.--Air/nitrogen boost pump drive and oxygen servicing flow schematic.
Figure 10-14.--A/U26U-1 gas storage system.
Boost Pump Drive Pressure Vent
Figure 10-15.--Nitrogen module.
Figure 10-16.--Oxygen module.
Figure 10-17.--Oxygen boost pump.
SERVICING AND INTERFACE EQUIPMENT
Figure 10-18.--Oxygen/nitrogen servicing/interface equipment.
Figure 10-19.--Servicing controls and indicators.
Direct Servicing From The Oxygen Cylinder
RECHARGING THE NITROGEN CYLINDERS
INSTALLING THE FULL CYLINDER.
Maintenance of the A/U26U-1
OXYGEN SURVEILLANCE
OXYGEN SURVEILLANCE - Continued
CHAPTER 11 - MOBILE AIR-CONDITIONERS
Table 11-1.--Specific Heat
LATENT HEAT OF FUSION
PRESSURE-TEMPERATURE RELATIONSHIPS
HEAT OF CONDENSATION
REFRIGERANTS
Figure 11-1.--Fundamental refrigeration cycle.
Refrigeration Cycle
COMPONENTS OF AN AIR-CONDITIONING SYSTEM
Figure 11-6.--Operating cycle of a reciprocating compressor.
Figure 11-7.--Construction of an air-cooled condenser.
Figure 11-9.--Expansion valve principle.
Figure 11-11.--Thermostatic expansion valve and evaporator.
Figure 11-12.--Construction detail of an evaporator.
Figure 11-14.--Drier-strainer (dehydrator).
SOLENOID VALVES
Figure 11-17.--High- and low-pressure safety control cutouts.
A/M32C-17 TRAILER-MOUNTED AIR-CONDITIONING UNIT
Figure 11-18.--A/M32C-21 trailer-mounted air-conditioning unit, electric-powered.
Figure 11-20.--A/M32C-17 control panel.
Table 11-3.--A/M32C-17 Controls and Indicators
Dehumidify Mode
Figure 11-21.--A/M32C-17 refrigeration diagram.
Figure 11-22.--Hydraulic system.
Figure 11-24.--Internal view of refrigerant manifold test set.
Figure 11-25.--Portable vacuum pump.
Figure 11-26.--Connections for drawing a vacuum.
Figure 11-27.--Halogen leak detector.
REFRIGERANT STORAGE CYLINDERS
Figure 11-28.--Connections for low-side charging.
Figure 11-29.--Connections for low-side charging.
Figure 11-31.--Refrigerant recovery method.
Table 11-5.--Troubleshooting the A/M32C-17
Table 11-5.--Troubleshooting the A/M32C-17--Continued
Table 11-5.--Troubleshooting the A/M32C-17--Continued
FIRST-AID TREATMENT FOR REFRIGERANT BURNS
CHAPTER 12 - GAS TURBINE COMPRESSORS
Figure 12-2.--Axial-flow type engine.
Figure 12-3.--Tractor-mounted gas turbine enclosure.
Figure 12-4.--Major sections of a gas turbine compressor (GTC-85).
Figure 12-5. - Airflow through compressor and turbine
Figure 12-6.--Fuel and bleed-air control system.
ACCELERATION STABILIZER AND ADJUSTABLE ORIFICE ASSEMBLY
Figure 12-7.--Lubrication system.
ELECTRICAL CONTROL BOX.
CENTRIFUGAL SWITCH ASSEMBLY
ACCELERATION STABILIZER SOLENOID AND ADJUSTABLE ORIFICE ASSEMBLY
SYSTEM FUEL CONTROL
PNEUMATIC POWER GAS TURBINE ENGINE, MODEL GTCP-100
Figure 12-12.--GTCP-100 gas turbine engine sections.
Figure 12-13.--Engine airflow schematic.
Figure 12-14.--Right and left view of a gas turbine engine.
Figure 12-15.--Combustion chamber construction.
SYSTEMS OF THE ENGINE
Figure 12-16.--Engine fuel and control air system and bleed-air system schematic for typical GTCP-100.
Figure 12-17.--Fuel control assembly.
Figure 12-18.--Modulating and shutoff valve.
Lubrication System
Figure 12-19.--Engine lubrication system schematic.
JET AIRCRAFT START UNIT, MODEL A/M47A-4
Figure 12-21.--Centrifugal switch assembly.
Figure 12-22. - Engine wiring diagram
Figure 12-24.--Model A/M47A-4 compressor power unit.
MAINTENANCE OF GAS TURBINE COMPRESSORS
ENCLOSURE TROUBLESHOOTING
Unit Flames or Booms on Light-Off
Engine Lights Off But Will Not Accelerate
TROUBLESHOOTING AND MAINTENANCE AIDS
Figure 12-26.--Engine mounted on 281270-0-3 portable maintenance stand.
Figure 12-27.--Gas turbine engine analyzer.
Figure 12-28.--Analyzer connected to engine while in its enclosure.
Figure 12-30.--Analyzer electrical schematic.
FUEL, OIL, AND PNEUMATIC SYSTEM
FUEL, OIL, AND PNEUMATIC SYSTEM - Continued
FUEL, OIL, AND PNEUMATIC SYSTEM - Continued
CHAPTER 13 - SHIPBOARD FLIGHT DECK EQUIPMENT
AACC LEADING PARTICULARS
Table 13-1.--AACC Leading Particulars
MOTOR DRIVE CABINET
Figure 13-3.--Pendant control box.
Figure 13-4.--A/S32P-25 fire-fighting truck.
Figure 13-5.--Controls and indicators on the A/S32P-25 fire-fighting vehicle.
Charge Pump Circuit
Hydrostatic Wheel Drive Circuit
FIRE-FIGHTING SYSTEM
Figure 13-6.--Controls and indicators.
Fire-Fighting System Operation
MAINTENANCE OF THE FIRE-FIGHTING VEHICLE
AIRCRAFT LIFTING SLINGS
Figure 13-9.--Required test/inspection certification tag.
Figure 13-10.--A typical forklift.
Figure 13-11.--Schematic of a typical forklift hydraulic system.
MAINTENANCE
Figure 13-12.--Flight deck scrubber.
Figure 13-13.--Flight deck scrubber instruments and controls.
Figure 13-14.--Pinch area and pivot lock pin.
TROUBLESHOOTING SUPPORT EQUIPMENT
TROUBLESHOOTING SUPPORT EQUIPMENT - Continued
APPENDIX I - GLOSSARY
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
AS-7601 SUPPORT EQUIPMENT CRYOGENIC MECHANIC
AS-7614 SHORE-BASED MOBILE ELECTRIC POWER PLANTS (MEPPS) IMA TECHNICIAN
TYPES OF MAINTENANCE
Preoperational Inspections
MAINTENANCE REQUIREMENTS CARDS (MRC)
EQUIPMENT REMOVAL, REPAIR, AND INSTALLATION
Reinstallation Of Equipment
Figure 1-2.--Silhouette of gas vapors falling. Caution: Gasoline vapors are heavier than air.
JET PROPULSION FUELS (JP)
AUTOMATIC TRANSMISSION FLUID.
CORROSION CONTROL
SUPPORT EQUIPMENT CORROSION CONTROL
CORROSION PUBLICATIONS
SUPPORT EQUIPMENT ISSUE/RECEIPT
AVIATION SUPPORT EQUIPMENT
Table 1-1.--Equipment Identification Codes
Table 1-1.--Equipment Identification Codes--Continued
Figure 1-3.--NC-8A/A-1 mobile electric power plant.
Figure 1-6.--A/S37A-3 shipboard mobile electric power plant.
Figure 1-8.--A/M27T-5 portable hydraulic power supply.
Figure 1-12.--H-250-1 hydraulic fill unit.
Figure 1-15.--A/S32A-30 aircraft towing tractor.
Figure 1-17.--A/S32A-42 aircraft towing tractor.
Figure 1-21.--A/M32C-17 mobile air-conditioner.
AIRCRAFT MAINTENANCE EQUIPMENT
Figure 1-25.--Variable height tripod jack, two-leg extension.
Figure 1-30.--A/S48M-2 diesel servicing platform.
Figure 1-32.--Net-4 transportation trailer.
Figure 1-36.--TMU-70 liquid oxygen servicing unit.
CHAPTER 2 - CHASSIS AND ATTACHING SYSTEMS
Figure 2-1.--Typical frames.
Figure 2-3.--Packing wheel bearings.
SUSPENSION SYSTEMS
Figure 2-4.--Coil spring suspension.
Figure 2-5.--Coil and leaf springs.
Figure 2-7.--Diagram of a steering mechanism.
Figure 2-9.--Steering gear unit of the cam and lever type.
Figure 2-10.--Recirculating ball-type steering gear.
STEERING SYSTEM MAINTENANCE
Figure 2-14.--A. Negative caster; B. positive caster.
Power Steering Maintenance
Figure 2-17.--Power steering system.
Figure 2-18.--Tie rod end showing clamp bolt and adjusting threads.
Other Maintenance Procedures
EXTERNAL CONTRACTING BRAKES.
Figure 2-21.--External contracting transmission parking brake.
Figure 2-23.--Wheel brake assembled and exploded view.
Figure 2-25.--Front wheel brake assembly.
Figure 2-26.--Primary and secondary brake shoes--self-energizing action.
SERVICING CALIPER ASSEMBLIES
Internal Expanding (Expander Tube) Brakes
Figure 2-30.--Expander tube brake. A. exploded view; B. assembled view; C. cross-sectional view.
Figure 2-31.--Sectional view of a brake drum.
Figure 2-32.--Brake assembly, self-adjusting.
Mechanical Brake Systems
Figure 2-33.--Mechanical brake system--cables.
Figure 2-35.--Typical hydraulic brake system.
Figure 2-37.--Hydraulic brake master cylinder.
Figure 2-38.--Hydraulic brake master cylinder--operation of two-way valve.
Master Cylinder Repair
Figure 2-40.--Bleeding hydraulic system--pressure method.
Figure 2-41.--Hydraulic system of the A/S32A-37 tow tractor.
Figure 2-42.--Hydrovac vacuum power brake cylinder.
Figure 2-43.--Hydrovac operation--released position.
Figure 2-44.--Hydrovac operation--applied position.
Figure 2-45.--Air-over-hydraulic brake system.
Figure 2-47.--Power train.
TRANSMISSIONS
Figure 2-48.--Basic fluid coupling, using air in place of fluid
Figure 2-51.--Fluid coupling oil flow "bounce back" effect.
Figure 2-52.--Torque converter, multi-element.
Figure 2-53.--Effects of oil jetstream on a flat surface and on a curved surface.
Converter Hydraulic System
Figure 2-56.--Typical sprag assembly, overrunning clutch.
Figure 2-57.--Direction of gear rotation.
Figure 2-59.--Members of a simple planetary gear system.
Figure 2-61.--Views of six speed/torque ratios for a simple planetary gear system.
CONSTRUCTION OF AN AUTOMATIC TRANSMISSION
Figure 2-65.--Typical hydraulic control unit and it's components.
HYDRAULIC CONTROL SYSTEM
Figure 2-68.--Centrifugal and fluid velocity governors
Figure 2-69.--Shift valve.
Figure 2-70.--Throttle valve.
Figure 2-72.--Functional shift valve controls.
Figure 2-73.--Neutral (N) operating range.
NEUTRAL RANGE
Figure 2-74.--Low (L) operating range.
Figure 2-75.--Drive (D) operating range.
Figure 2-76.--"Kickdown" forced shift position.
Figure 2-77.--Reverse (R) operating range.
TRANSMISSION MAINTENANCE
Figure 2-78.--Typical automatic transmission.
Torque Converters and Fluid Couplings
Figure 2-79.--Typical transmission oil passages.
Figure 2-80.--Typical hydraulic control unit.
Table 2-1.--Allison Four-Speed Automatic Transmission Troubleshooting Chart
Table 2-1.--Allison Four-Speed Automatic Transmission Troubleshooting Chart--Continued
Service Diagnosis and Repair of Automatic Transmissions
TRANSFER CASES
Figure 2-81.--Propeller shaft assembly.
Figure 2-83.--Ring gear and pinion.
Figure 2-86.--Construction of center cam.
Figure 2-87.--Operation of no-spin differential during
Figure 2-90.--Bearing mounting and adjustment nuts of full floating construction.
Figure 2-91.--Typical exhaust system.
Figure 2-92.--Support Equipment tire/wheel maintenance certification.
Figure 2-93.--Support equipment tire/wheel maintenance requirements.
Figure 2-94.--Solid and split rims.
WHEEL AND TIRE MAINTENANCE
DEMOUNTING A TIRE
Figure 2-95. - Demountable flange teardown and buildup
Figure 2-96.--Tire inflator assembly kit.
Tire Inflation Safety Cage
INSTALLING THE WHEEL ON THE VEHICLE
SAFETY REVIEW
Figure 3-1.--Simple external and internal combustion engines.
Figure 3-2.--Cylinder, piston, connecting rod, and crankshaft for a 1-cylinder engine.
Figure 3-3.--Piston top dead center (TDC).
Figure 3-5.--Four-stroke cycle in a gasoline engine.
ENGINE CYCLES
Figure 3-6.--Two-stroke cycle in a diesel engine.
Figure 3-7.--Crankshaft for a 6-cylinder engine.
Figure 3-8.--Four-stroke cycle diesel engine.
Figure 3-9.--Typical cylinder arrangements.
Figure 3-11.--Torque wrench in use, tightening main bearing stud of an engine.
Figure 3-12.--Bore and stroke of an engine cylinder.
Figure 3-13.--Compression ratio is ratio between views (A) and (B)
Figure 3-14.--Typical valve timing diagrams.
STATIONARY PARTS OF AN ENGINE
Figure 3-16.--Cylinder block and components.
Figure 3-18.--Cylinder of an air-cooled engine.
Figure 3-20.--(A) Dry-type liner for 2-cycle General Motors series engines. (B) Section through series 71 block.
Figure 3-21.--Cylinder head for L-head engine.
Figure 3-22.--Cylinder head for overhead valve engine.
Figure 3-23.--Intake and exhaust manifolds.
Figure 3-24.--Engine overhaul gasket kit.
MOVING PARTS OF AN ENGINE
Figure 3-25.--Piston and connecting rod (exploded view).
Figure 3-27.--Piston assembly of General Motors series 71 diesel engine.
Figure 3-29.--Piston pin types.
Figure 3-31.--Fitting piston ring and installing piston.
Figure 3-32.--Checking connecting rod alignment.
Figure 3-34.--Crankshaft and throw arrangements commonly used.
Figure 3-35.--Sectional view of a typical vibration damper.
Figure 3-37.--Camshaft and bushings.
Figure 3-39.--Valve operating mechanism for an overhead valve engine.
Figure 3-40.--Operation of a hydraulic valve tappet or lifter.
Figure 3-42.--Hydraulic valve lifter.
Figure 3-43.--Valve head and set angle.
Figure 3-45.--Valve spring compressors for L-head and valve-in-head engines.
Figure 3-48.--Using a valve seat dial guage.
Figure 3-49.--Valve seat grinding equipment.
Figure 3-53.--Valve seat too wide and low in block.
Figure 3-58.--Typical sleeve-type bearing half.
Figure 3-59.--Oil clearance between bearing and shaft.
Figure 3-60.--Effect of a metallic particle embedded in bearing material (Babbit lining).
QUICK ENGINE CHANGE CONCEPT
ANTIKNOCK QUALITY AND DETONATION
Figure 4-1.--Combustion process.
Figure 4-2.--Typical fuel system for a gasoline engine.
Figure 4-4.--Coil-type gauge circuit.
Figure 4-5.--Fuel pump with attached filter bowl.
Figure 4-8.--Types of fittings used on fuel lines. (A) Flared. (B) Compression. (C) Soldered.
Figure 4-10.--Simplified carburetor.
Figure 4-11.--Simplified carburetor with throttle valve.
Figure 4-13.--A simple idle and low-speed circuit.
Figure 4-16.--Vacuum set-up high-speed circuit.
Figure 4-17.--Carburetor accelerator pump circuit.
Figure 4-18.--Spring-loaded poppet valve in choke valve.
Figure 4-21.--Automatic choke with thermostatic coil mounted in manifold.
Figure 4-22.--Wet-type air cleaner.
Figure 4-24.--Flow of exhaust gases around intake manifold.
Figure 4-25.--Exhaust pipe, muffler, and tail pipe.
GASOLINE ENGINE EMISSIONS
THE DIESEL FUEL SYSTEM
Figure 4-26.--Comparison of sequence of events in diesel and gasoline 4-cycle engines.
COMBUSTION CHAMBERS
Figure 4-28.--Diesel engine precombustion chamber.
GOVERNORS
SPRING-LOADED CENTRIFUGAL GOVERNORS
Figure 4-30.--Simple mechanical governor.
OVERSPEED SAFETY DEVICES
DIESEL FUEL SYSTEM COMPONENTS
Figure 4-33.--Fuel filter assembly with replaceable element.
Figure 4-35.--Cutaway view of vane-type fuel pump.
Figure 4-36.--Vanes and rotor in housing of a vane-type fuel pump
Figure 4-37.--Roosa Master fuel injection pump (Model DC).
Figure 4-38.--Pump rotating parts (Model DC).
Figure 4-41.--Rotor in charging position with the rollers between the cam lobes (DC pump).
Figure 4-45.--Regulating piston in pressure regulating position
Figure 4-46.--Fuel flow in speed advance operation.
Figure 4-47.--Diagram of typical General Motors diesel fuel system.
COLD WEATHER STARTING DEVICES
DIESEL FUEL SYSTEM MAINTENANCE
GENERAL SERVICING AND MAINTENANCE
MAINTAINING INJECTION EQUIPMENT
Figure 4-50.--Cleaning injector spray nozzle holes.
Figure 4-52.--Positioning rear injector rack control lever.
Table 4-1.--Diesel Engine Troubleshooting Chart
Table 4-1.--Diesel Engine Troubleshooting Chart - Continued
Table 4-1.--Diesel Engine Troubleshooting Chart - Continued
Table 4-1.--Diesel Engine Troubleshooting Chart - Continued
Table 4-1.--Diesel Engine Troubleshooting Chart - Continued
Table 4-1.--Diesel Engine Troubleshooting Chart - Continued
CHAPTER 5 - INTERNAL COMBUSTION ENGINE COOLING AND LUBRICATING SYSTEMS
Figure 5-1.--Air-cooled engine.
Maintaining the Air-Cooled System
Figure 5-3.--Tubular radiator core construction.
Figure 5-4.--Radiator pressure cap.
Figure 5-5.--Water pump.
Figure 5-6.--A thermostat in operation.
Figure 5-7.--Bellows thermostat.
SERVICING THE LIQUID-COOLING SYSTEM
Figure 5-10.--Reverse flushing of water jackets.
Table 5-1.--Permanent Antifreeze Needed Per Gallon of Cooling System Capacity
REPAIRING COOLING SYSTEM COMPONENTS
REPAIRING COOLING SYSTEM COMPONENTS - Continued
Figure 5-11.--Testing a thermometer.
ENGINE LUBRICATION SYSTEMS
Figure 5-12.--Gear oil pump.
Figure 5-13.--Rotary oil pump.
Figure 5-14.--Fixed oil strainer.
Figure 5-17.--Oil temperature regulator (cooler).
Figure 5-20.--Combination splash force-feed lubrication system
LUBRICATION SYSTEM MAINTENANCE
Figure 5-22.--Positive crankshaft ventilation.
Servicing Oil Lines, Fittings, and Strainers
Oil Pump and Relief Valve
Figure 6-1.--Symbols commonly used in electricity.
Figure 6-2.--Schematic diagram.
Figure 6-3.--Wiring diagram.
Figure 6-4.--Codes for wiring functions.
Figure 6-5.--Alphanumeric wire identification code.
Wire Support and Protection
Figure 6-6.--Example of wire identification code use.
High-Voltage Precautions
Figure 6-8.--Battery construction.
Figure 6-10.--Specific gravity temperature correction chart.
Figure 6-11.--Potable constant potential battery charger.
Activating a Dry-Charged Battery
MAINTENANCE AND TESTING
CHARGING SYSTEMS
Figure 6-12.--Generating direct-current electrical energy.
Figure 6-14.--A shunt-wound generator.
Figure 6-16.--Sectional view of dc generator.
Figure 6-17.--A simple alternator.
Figure 6-18.--A basic alternator with six pairs of poles in the rotor
Figure 6-22.--A disassembled alternator.
Figure 6-24.--View of an ac generator slip ring end frame assembly.
Figure 6-26.--Testing the rotor for grounds, shorts, and opens.
Figure 6-29.--Testing diodes with a test lamp.
Bearing Replacement and Lubrication
Figure 6-31.--Installing diodes.
Figure 6-32.--Three-unit, vibrating contact, dc regulator.
Figure 6-33.--Dc charging circuit with a vibrating-contact regulator.
TWO-UNIT VIBRATING-CONTACT AC REGULATOR
Figure 6-35.--Ac charging circuit using a vibrating-contact regulator.
SEMITRANSISTORIZED, TWO-UNIT, VIBRATING-CONTACT REGULATOR
Figure 6-37.--Ac charging circuit using a semitransistorized regulator.
Figure 6-39.--Ac circuit using a fully transistorized regulator.
MAINTENANCE AND REPAIR
Two-Unit Vibrating-Contact Regulator
Figure 6-40.--Voltage regulator test.
Conventional Ignition Systems
Figure 6-41.--Conventional battery ignition system.
Figure 6-42.--Cutaway view of an ignition coil.
Figure 6-43.--Side and top view of a distributor.
Figure 6-45.--Transistor controlled magnetic pulse battery ignition system.
Figure 6-46.--Comparison of the three basic ignition systems.
Figure 6-47.--Correct coil polarity and current flow for a negative grounded system.
Figure 6-48.--Voltmeter connections for resistance tests of the primary circuit.
Starting Ignition Circuit Test
Figure 6-49.--Examples of spark plug appearances.
Figure 6-51.--Relationship of dwell and point gap.
Figure 6-52.--One method of checking coil polarity.
Figure 6-53.--Spark plug cleaning and testing machine.
Figure 6-55.--Distributor used with transistorized ignition system
Figure 6-59.--Harness connector No. 3 test.
Figure 6-63.--Control unit No. 5 test.
SECONDARY ELECTRICAL SYSTEM TROUBLESHOOTING
Figure 6-65.--Electric starting system.
Figure 6-66.--Sectional view of a heavy-duty starter.
Figure 6-68.--Solenoid shift starter and overrunning clutch drive.
Figure 6-69.--Control system for a starter with overrunning clutch drive.
Figure 6-70.--Control system for a starter with a Bendix drive
Starter Lockout Relay
Figure 6-72.--Tester connections for a battery capacity test.
Voltage Drop (Resistance) Tests
Figure 6-74.--(A) Simplified automotive ammeter; (B) Wiring diagram showing ammeter in the charging circuit.
Figure 6-75.--Coil operated fuel gauge circuit.
Figure 6-76.--Thermostatic fuel gauge circuit.
Figure 6-78.--(A) Oil pressure sending unit; (B) Schematic diagram of balancing coil oil pressure indicating system.
Figure 6-79.--Electrical temperature gauge.
OIL PRESSURE LIGHT
Figure 6-82.--(A) Speedometer; (B) Tachometer.
Figure 6-83.--Speedometer and tachometer drive shaft.
Figure 6-85.--(A) Total odometer; (B) Trip odometer.
Figure 6-86.--Electrical speedometer-tachometer.
Figure 6-87.--Electrical vibrator-type horn.
Figure 6-89.--Pictorial diagram of a directional signal system.
Figure 6-92.--Schematic diagram of a three-speed windshield wiper
AUXILIARY POWER RECEPTACLES
Figure 6-94.--Sealed beam headlight installation.
Figure 6-96.--Rear marker and blackout driving lights.
Figure 6-98.--Blackout light switch and connection.
Figure 6-99.--Light relay wiring diagram.
FUSES AND CIRCUIT BREAKERS
Figure 7-1.--Resistance chart of common conductors, semiconductors, and insulators.
Figure 7-2.--Junction diode.
Figure 7-5.--Checking a diode with an ohmmeter.
Figure 7-7.--NPN transistor--(A) NPN diagram; (B) schematic symbol.
Figure 7-10.--Simple circuit using a transistor as a switch.
Figure 7-11.--Testing a transistor's gain with an ohmmeter.
Figure 7-13.--Silicon-controlled rectifier--(A) physical PNPN structure; (B) two transistor analogy; (C) SCR internal circuitry; (D) SCR symbols.
Figure 7-14.--Magnetic field of a current-carrying conductor.
Table 7-2.--B, H, and for Common Magnetic Materials
Figure 7-15.--Graph of four magnetic materials--(A) magnetization curves; (B) permeability curves.
APPLICATION OF SEMICONDUCTOR DEVICES AND MAGNETIC AMPLIFIERS
Figure 7-20.--Views of line voltage-sensing bridge (BRDG).
Figure 7-21.--Left-hand rule for generators.
Figure 7-23.--Output voltage of an elementary generator during one revolution.
DC GENERATORS
Figure 7-24.--Graph of the output of a simple dc generator.
Figure 7-26.--Voltage output characteristics of the series, shunt, and compound-wound generators.
Figure 7-27.--Simplified solid-state dc voltage regulator.
Figure 7-28.--Types of ac generators.
Figure 7-29.--An ac generator pictorial.
Figure 7-30.--Ac generator schematic drawings.
Figure 7-31.--AN/USM-128A electrical test set.
Figure 7-32.--Electrical frequency control circuits.
Types of AC Generators
Figure 7-33.--Wye-delta voltage relationships.
Figure 7-34.--Diagram of a brushless ac generator excitation system.
Figure 7-35.--An ac voltage regulator (VR2) simplified schematic.
Figure 7-36.--A dc power supply circuit.
Figure 7-37.--Internal cooling fans of a typical generator.
UNGROUNDED SYSTEMS
NC-2A MOBILE ELECTRIC POWER PLANT
Table 7-3.--Leading Particulars for the NC-2A
Figure 7-40.--Engine starting circuit.
Figure 7-41.--Engine control panel.
Figure 7-43.--Engine governor and dc power control.
DC POWER CONTROL AND DISTRIBUTION
AC POWER CONTROL AND DISTRIBUTION
Figure 7-45. - AC power control and distribution circuit
Figure 7-47.--NC-8A mobile electric power plant.
Figure 7-48.--Cutaway view of an NC-8A generator.
Figure 7-49.--AC power output system, simplified schematic.
Figure 7-51.--NC-8A fault board.
Figure 7-52.--Simplified schematic for fault locator switch.
Figure 7-53.--NC-8A self -propulsion package.
MMG-1A MOBILE MOTOR-GENERATOR SET
Figure 7-56.--MMG-1A mobile motor-generator set (internal view).
Figure 7-58.--DC input change board.
ELECTRICAL SYSTEM MAINTENANCE
Table 7-4.--DC Generator Troubleshooting Chart
Table 7-4.--DC Generator Troubleshooting Chart - Continued
Figure 7-59.--Models of attachable head plugs.
Table 7-5.--Leading Particulars for the DA-675/MSM Load Bank
Table 7-5.--Leading Particulars for the DA-675/MSM Load Bank - Continued
CONTROLS, INDICATORS, AND EXTERNAL CONNECTION FACILITIES
Figure 7-61.--Load bank with access doors open.
Figure 7-64.--AC control panel.
Table 7-6.--Controls and Indicators for the master Control Panel
Table 7-7.--Controls and Indicators for the DC Control Panel
Table 7-8.--Controls and Indicators for the AC Control Panel
Table 7-8.--Controls and Indicators for the AC Control Panel - Continued
OPERATING PROCEDURES
Split Bus DC Operation
Split Bus DC Operation - Continued
Figure 7-65.--Kilowatts (KW) chart.
Normal Shutdown Procedure
FAILURE OF THE LOAD BANK TO OPERATE
ELECTRICAL SAFETY PRECAUTIONS
Low-Voltage Precautions
CHAPTER 8 - HYDRAULIC SYSTEMS AND EQUIPMENT
Figure 8-1.--Transmission of force by liquids.
Figure 8-3.--Multiplication of forces.
Figure 8-4.--A 10-ton hydraulic jack.
COMPONENTS OF HYDRAULIC SYSTEMS
Figure 8-5.--Typical hydraulic reservoir.
Figure 8-6.--Hydraulic Reservoir Assembly A/M27T-5.
Figure 8-7.--Fluid Service Cart, Model 310.
Figure 8-11.--Principles of operation of the internal gear group
Reciprocating Pumps
Figure 8-13.--Single-action hydraulic hand pump.
Figure 8-15.--Fixed displacement piston pump.
Figure 8-16.--Variable displacement, stroke reduction pump with variable cam plate.
Figure 8-17.--Variable displacement axial piston pump.
Figure 8-18.--Different types of hydraulic filter elements.
Figure 8-20.--Graphic comparison of particle sizes.
Figure 8-21.--Micronic filter.
Figure 8-22.--Full flow, bypass hydraulic filter.
Figure 8-23.--Full flow bypass, electrical indicating hydraulic filter.
Figure 8-25.--Typical high-pressure support equipment filter assembly
Flow Control Valves
Figure 8-26.--One-way restrictor (check valve).
PRESSURE REGULATOR VALVES
Figure 8-29.--Pressure regulator in the cut-in state (view A); and the cut-out state (view B).
Figure 8-31.--Operation of a rotary spool valve.
CLOSED-CENTER DIRECTIONAL CONTROL VALVES
Figure 8-34.--Open-center directional control valve.
ACTUATORS (ACTUATING CYLINDERS)
Figure 8-35.--Typical accumulators.
Figure 8-37.--Typical cross-sectional view of a double-acting actuating cylinder.
Figure 8-38.--Bourdon tube.
Figure 8-39.--A/M27T-5 control panel, controls, instruments, and gauges.
Figure 8-40.--Pressure gauge snubber.
HYDRAULIC MOTORS
HYDRAULIC SYSTEMS
Figure 8-44.--Hydraulic system with a relief valve incorporated
TYPES OF HYDRAULIC SYSTEMS
Figure 8-47.--Basic open-center system.
CLASSES OF CONTAMINATION
CONTAMINATION CONTROL
CONTAMINATION CHECKS
Figure 8-48.--Contamination analysis kit.
TROUBLESHOOTING AND MAINTENANCE
TROUBLESHOOTING AND MAINTENANCE - Continued
TROUBLESHOOTING AND MAINTENANCE - Continued
TROUBLESHOOTING AND MAINTENANCE - Continued
CHAPTER 9 - PNEUMATICS
NITROGEN
Figure 9-2.--Portable high-pressure nitrogen cylinder.
Figure 9-3.--Portable high-pressure nitrogen cylinder schematic
RECHARGING THE NITROGEN CYLINDER
Table 9-1.--Portable High-Pressure Nitrogen Cylinder Troubleshooting Chart
Figure 9-4.--A/M26U-4 (NAN-4) nitrogen servicing unit.
Figure 9-6.--A/M26U-4 system nitrogen flow diagram.
OUTLET PRESSURE GAUGES
Figure 9-7.--Flow during a motor and pump assembly cycle.
Figure 9-8.--Motor and pump assembly.
CHARGING AN EXTERNAL SYSTEM
RECHARGING THE NITROGEN SERVICING UNIT
PRESSURE REGULATOR
Figure 9-9.--Pressure regulator assembly.
VALVES AND OTHER COMPONENTS
Figure 9-11.--Purifier assembly.
Table 9-2.--A/M26U-4 Troubleshooting Chart
LOW-PRESSURE AIR COMPRESSORS
LOW-PRESSURE AIR COMPRESSORS - Continued
LOW-PRESSURE AIR COMPRESSORS - Continued
CHAPTER 10 - LIQUID AND GASEOUS OXYGEN SYSTEMS AND EQUIPMENT
Figure 10-2.--2,000 gallon capacity liquid oxygen storage tank
Figure 10-3.--Corrugated flexible metal hose.
Figure 10-5.--TMU-70/M low-loss, closed-loop, liquid oxygen servicing trailer.
Figure 10-6.--LOX servicing trailer schematic diagram.
The Transfer Lines and Piping System
Table 10-1.--LOX Servicing Trailer Controls and Indicators
Table 10-1.--LOX Servicing Trailer Controls and Indicators - Continued
Figure 10-7.--Physical layout of the LOX servicing trailer's controls and indicators.
Transferring LOX to the Aircraft
THE STORAGE TANK
Figure 10-8.--Toggle valve assembly.
Figure 10-9.--Relief valve and rupture disc.
THE EVAPORATION LOSS RATE TEST
Table 10-5.--The Storage Tank Piping Test
Table 10-6.--Troubleshooting Chart
LOX CONTAMINATION
Inert Solid Constituents
INER SOLID CONSTITUENTS
Figure 10-10.--FCS 2001 cryogenic sampler.
Figure 10-11.--Aircraft liquid oxygen system gas purging set.
Standards of Cleanliness
GASEOUS OXYGEN
Figure 10-12.--A/U26U-1 oxygen servicing unit.
Figure 10-13.--Air/nitrogen boost pump drive and oxygen servicing flow schematic.
Figure 10-14.--A/U26U-1 gas storage system.
Boost Pump Drive Pressure Vent
Figure 10-15.--Nitrogen module.
Figure 10-16.--Oxygen module.
Figure 10-17.--Oxygen boost pump.
SERVICING AND INTERFACE EQUIPMENT
Figure 10-18.--Oxygen/nitrogen servicing/interface equipment.
Figure 10-19.--Servicing controls and indicators.
Direct Servicing From The Oxygen Cylinder
RECHARGING THE NITROGEN CYLINDERS
INSTALLING THE FULL CYLINDER.
Maintenance of the A/U26U-1
OXYGEN SURVEILLANCE
OXYGEN SURVEILLANCE - Continued
CHAPTER 11 - MOBILE AIR-CONDITIONERS
Table 11-1.--Specific Heat
LATENT HEAT OF FUSION
PRESSURE-TEMPERATURE RELATIONSHIPS
HEAT OF CONDENSATION
REFRIGERANTS
Figure 11-1.--Fundamental refrigeration cycle.
Refrigeration Cycle
COMPONENTS OF AN AIR-CONDITIONING SYSTEM
Figure 11-6.--Operating cycle of a reciprocating compressor.
Figure 11-7.--Construction of an air-cooled condenser.
Figure 11-9.--Expansion valve principle.
Figure 11-11.--Thermostatic expansion valve and evaporator.
Figure 11-12.--Construction detail of an evaporator.
Figure 11-14.--Drier-strainer (dehydrator).
SOLENOID VALVES
Figure 11-17.--High- and low-pressure safety control cutouts.
A/M32C-17 TRAILER-MOUNTED AIR-CONDITIONING UNIT
Figure 11-18.--A/M32C-21 trailer-mounted air-conditioning unit, electric-powered.
Figure 11-20.--A/M32C-17 control panel.
Table 11-3.--A/M32C-17 Controls and Indicators
Dehumidify Mode
Figure 11-21.--A/M32C-17 refrigeration diagram.
Figure 11-22.--Hydraulic system.
Figure 11-24.--Internal view of refrigerant manifold test set.
Figure 11-25.--Portable vacuum pump.
Figure 11-26.--Connections for drawing a vacuum.
Figure 11-27.--Halogen leak detector.
REFRIGERANT STORAGE CYLINDERS
Figure 11-28.--Connections for low-side charging.
Figure 11-29.--Connections for low-side charging.
Figure 11-31.--Refrigerant recovery method.
Table 11-5.--Troubleshooting the A/M32C-17
Table 11-5.--Troubleshooting the A/M32C-17--Continued
Table 11-5.--Troubleshooting the A/M32C-17--Continued
FIRST-AID TREATMENT FOR REFRIGERANT BURNS
CHAPTER 12 - GAS TURBINE COMPRESSORS
Figure 12-2.--Axial-flow type engine.
Figure 12-3.--Tractor-mounted gas turbine enclosure.
Figure 12-4.--Major sections of a gas turbine compressor (GTC-85).
Figure 12-5. - Airflow through compressor and turbine
Figure 12-6.--Fuel and bleed-air control system.
ACCELERATION STABILIZER AND ADJUSTABLE ORIFICE ASSEMBLY
Figure 12-7.--Lubrication system.
ELECTRICAL CONTROL BOX.
CENTRIFUGAL SWITCH ASSEMBLY
ACCELERATION STABILIZER SOLENOID AND ADJUSTABLE ORIFICE ASSEMBLY
SYSTEM FUEL CONTROL
PNEUMATIC POWER GAS TURBINE ENGINE, MODEL GTCP-100
Figure 12-12.--GTCP-100 gas turbine engine sections.
Figure 12-13.--Engine airflow schematic.
Figure 12-14.--Right and left view of a gas turbine engine.
Figure 12-15.--Combustion chamber construction.
SYSTEMS OF THE ENGINE
Figure 12-16.--Engine fuel and control air system and bleed-air system schematic for typical GTCP-100.
Figure 12-17.--Fuel control assembly.
Figure 12-18.--Modulating and shutoff valve.
Lubrication System
Figure 12-19.--Engine lubrication system schematic.
JET AIRCRAFT START UNIT, MODEL A/M47A-4
Figure 12-21.--Centrifugal switch assembly.
Figure 12-22. - Engine wiring diagram
Figure 12-24.--Model A/M47A-4 compressor power unit.
MAINTENANCE OF GAS TURBINE COMPRESSORS
ENCLOSURE TROUBLESHOOTING
Unit Flames or Booms on Light-Off
Engine Lights Off But Will Not Accelerate
TROUBLESHOOTING AND MAINTENANCE AIDS
Figure 12-26.--Engine mounted on 281270-0-3 portable maintenance stand.
Figure 12-27.--Gas turbine engine analyzer.
Figure 12-28.--Analyzer connected to engine while in its enclosure.
Figure 12-30.--Analyzer electrical schematic.
FUEL, OIL, AND PNEUMATIC SYSTEM
FUEL, OIL, AND PNEUMATIC SYSTEM - Continued
FUEL, OIL, AND PNEUMATIC SYSTEM - Continued
CHAPTER 13 - SHIPBOARD FLIGHT DECK EQUIPMENT
AACC LEADING PARTICULARS
Table 13-1.--AACC Leading Particulars
MOTOR DRIVE CABINET
Figure 13-3.--Pendant control box.
Figure 13-4.--A/S32P-25 fire-fighting truck.
Figure 13-5.--Controls and indicators on the A/S32P-25 fire-fighting vehicle.
Charge Pump Circuit
Hydrostatic Wheel Drive Circuit
FIRE-FIGHTING SYSTEM
Figure 13-6.--Controls and indicators.
Fire-Fighting System Operation
MAINTENANCE OF THE FIRE-FIGHTING VEHICLE
AIRCRAFT LIFTING SLINGS
Figure 13-9.--Required test/inspection certification tag.
Figure 13-10.--A typical forklift.
Figure 13-11.--Schematic of a typical forklift hydraulic system.
MAINTENANCE
Figure 13-12.--Flight deck scrubber.
Figure 13-13.--Flight deck scrubber instruments and controls.
Figure 13-14.--Pinch area and pivot lock pin.
TROUBLESHOOTING SUPPORT EQUIPMENT
TROUBLESHOOTING SUPPORT EQUIPMENT - Continued
APPENDIX I - GLOSSARY
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
APPENDIX I - GLOSSARY - Continued
