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TM 9-2520-249-34& P
CHAPTER 9
TESTS AND ADJUSTMENTS
(2) Two oil pressure gages with ranges of
9-1.
Scope of Chapter 9
0 to 400 and 0 to 100psi, and fittings to adapt the gages
a. The tests described in this section will
to 1/8- and 1/4-inch NPT female threads. Additional
determine if the functional operation of the transmission
fittings may be required to adapt the gage to cooler-and
is satisfactory. These tests may be made after rebuild
cooler-out connections. The gages are provided in the
or at any time to determine the condition of the
special tool set in a kit (11, table 3-1).
transmission.
The tests may be made with the
b. Transmission Installed on Test Stand. In
transmission installed in the vehicle or on a properly
addition to a properly equipped test stand with a means
equipped test stand.
of driving a transmission, and the equipment tested in a,
b. These tests will determine whether or not
above, the following equipment is required.
(1) Manual
control
for
shifting
system are functioning properly.
transmission through all range selector positions.
c. Adjustment of transmission components
(2) Manual control for operating steer
and control linkage must be correct when tests are
controls.
performed (or corrected during tests). When tests are
(3) Manual control for operating pivot
made in the vehicle, the vehicle, engine must be
valve.
properly adjusted and performing efficiently. Refer to
(4) Manual control for operating throttle
TM 9-2815-205-34 for engine test and adjustment
valve (on transmission).
procedures. Refer to paragraphs 9-4 and 9 5, below, for
(5) Manual control for operating left and
transmission test and adjustment procedures.
right brakes simultaneoulsy.
9-2.
Test Equipment
NOTE
a. Transmission Installed in Vehicle.
The
Brake control must be self-equalizing.
following equipment is required when testing the
(6) Speed
control
for
regulating
transmission in a vehicle:
transmission input speed.
(1) Tachometer to
indicate
engine
c. Test Data Log Sheet. A sample test data
speed (transmission input and output speed) in
log sheet for recording transmission performance is
revolutions per minute.
illustrated in figure 9-1.
9-1
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