Q15-3. How is the nosewheel steering system armed
They list many of the possible troubles, probable
or activated during shipboard operations?
causes, and recommend a commonsense remedy.
Q15-4. What type of motor is incorporated in the
Accomplish the disassembly of the steering
nosewheel steering power unit?
dampener assembly in the order of the key index
numbers assigned to the exploded view illustration in
Q15-5. What are the three basic electrical compo-
the "Intermediate Repair Section" of the MIM. Before
nents used in the nosewheel steering system?
reassembly, clean all parts with a suitable solvent. Air
Q15-6. The signals from the command and feedback
dry with warm, dry, low-pressure (10 psi) air. Nylon,
potentiometers have to be in what condition
rubber, and Teflon parts are replaced and not cleaned.
for the nosewheel steering power unit's servo
You should use the inspection standards in the MIM or
valve to return to a neutral condition?
applicable 03 manual to inspect all parts of the steering
Q15-7. Maintenance functions on electrically con-
assembly.
trolled nose gear steering systems are nor-
Reassembly is essentially a reversal of the
mally performed by which two aviation
disassembly order with appropriate quality assurance
ratings?
checks at specific steps. Following complete re-
assembly, the steering assembly must undergo the
ARRESTING GEAR SYSTEM
following bench tests:
LEARNING OBJECTIVE: Recognize the
1. Proof pressure test
types of arresting gear systems. Identify their
2. Input torque test
components, and the applicable maintenance
3. Steering resolution test (input motion versus
requirements.
output motion)
4. Stall leakage test (output shaft in neutral and
The arresting gear system controls operation of the
input shaft fully engaged, and then measure leakage)
arresting hook and the supplementary equipment
5. No steer test (steering assembly in neutral, and
required to lower and raise the hook for carrier
then measure leakage at return)
operation. At organizational maintenance levels, main-
6. External leakage test
tenance of the arresting gear system consists of
servicing the snubber-actuator and bumper assemblies,
counterclockwise torque required to start movement of
operational checks, troubleshooting, rigging and
the output shaft in the power ON and power OFF
adjusting the system, and removal and installation of
conditions)
components within the system.
8. Output torque test
9. Steady dampening rate test
WARNING
The numerous steps involved in bench testing
Before operating the arresting gear, make sure all
components, such as the steering assembly and the
personnel and equipment are clear of the area through
variations between it and other steering actuators, make
which the gear moves. When checking arresting gear
it impractical to cover the individual steps in detail.
operation, always provide suitable protection for the
Shop and quality assurance personnel must ensure that
arresting hook point. Place a sandbag or padding on
each component repaired at the intermediate mainte-
the deck. Failure to observe proper maintenance
nance level is actually in a ready-for-issue condition.
procedures could result in damage to aircraft and
This requires vigilance on the part of all personnel. A
injury to personnel.
complete bench test must be made according to the test
arrangements provided in the MIM or the applicable 03
manual.
ARRESTING HOOK ASSEMBLY INSPECTION
Q15-1. When the electrically controlled nose steering
The periodic maintenance information cards for
system is NOT engaged, what benefit does it
each aircraft and MIM provide detailed information on
provide?
the inspection, replacement, and disposition of
Q15-2. The nosewheel steering system provides
arresting hook assemblies. This information is based on
directional control of the aircraft during
a specified number of arrested landings. The inspection
ground operations in how many modes of
and replacement interval is dependent on the type of
operation?
hook.
15-6
