CHAPTER 9. TESTS AND ADJUSTMENTS - TM-9-2520-249-34-P0204

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.

the clutches, torque converter, gearing and hydraulic

(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