procedures as well as the depth of allowable repairs by
shift condition, ensure that the engine is properly
tuned, the idle speed is correct, all band are adjusted
the user.
correctly, and the control linkage is as specified.
Q2-21. Which of the following components can
Always make the hydraulic pressure tests before any
transmit torque at a ration of 1 to 1 (direct
removal or disassembly. Refer to the applicable
drive) or under certain conditions, can
repair manual for in-depth troubleshooting, pressure
increase torque so that more torque is
check valves, and hydraulic fluid flow charts.
delivered than applied?
In recent years the Navy has introduced a
1.
The transmission
program whereby an engine that requires internal
2.
The differential
engine repair is swapped out as a complete assembly
3.
The torque converter
(with its transmission, if applicable). The Navy
4.
The hydraulic multiplier
supply system has contract provisions where
complete engine/transmission assemblies are rebuilt
Q2-22. What type of gear system is used by
and dynamometer tested by a civilian source and
automatic transmissions?
reintroduced back into the supply system. This
1.
A direct drive gear system
concept is referred to as QEC (quick engine change),
2.
An opposing gear system
and is offered for approximately 80 percent of the SE
3.
A multiplying gear system
power plant/drive train configurations, with more
4.
A planetary gear system
QECs added as the fleet requirements dictate.
Q2-23. The gears that are located between the
Before disassembly of an engine/transmission
internal gear and the sun gear are referred to
assembly due to internal malfunction, you should
as what type of gears?
investigate the availability of a QEC for that unit. If a
QEC is not available, then before disassembling the
1.
engine/transmission assembly, ensure that sufficient
2.
The internal connecting gears
parts and technical information are available and
3.
that the urgency of need is there to justify the
4.
The orbiting gears
teardown. It is quite time-consuming to disassemble
Q2-24. Which of the following components in an
an engine/transmission assembly, make a repair, and
automatic transmission is responsible for
reassemble the engine/transmission assembly only
making the right gear ratio selection for the
to find the engine requires additional internal
engine load and vehicle speed?
repairs.
1.
The shifter valve
If a QEC is available for the type of equipment
2.
The hydraulic control units
you are troubleshooting and you can still use the
3.
The kick-down valve
equipment until the replacement assembly is
4.
The speed-sensing valve
received, your best option is to order the QEC. A
r e bu i l t t r a n s m i s s i o n , i f p a r t o f t h e Q E C , w i l l
Q2-25. The governor is normally mounted in which
accompany the engine. The engine will be totally
of the following locations on the
rebuilt with all new components, and the complete
transmission?
package will be dynamometer tested. Eventually
1.
On the input shaft
most aviation ship's AVCAL and COSAL listings
2.
On the output shaft
will authorize a QEC package to be stored on board
3.
On the front pump
for each type of equipment under this concept for
4.
On the rear pump
immediate receipt and installation. Refer to the
a p p l i c a b l e N AVA I R a n d N AVA I RWA R C E N
Q2-26. Which of the following valves directs oil
(NAWC) instructions for the program policies and a
pressure to oppose the governor pressure,
listing of the QEC kits available.
and thus delays upshifting?
As previously mentioned, the transmissions are
1.
The load control valve
part of the QEC program and will be exchanged rather
2.
The kick-down valve
than overhauled in the fleet. NAVAIRINST 13610.2
3.
The throttle valve
(series) (QEC instruction) lists the procuring
4.
The governor valve
2-69