Adjustments - TM-9-2520-249-34-P0209

TM 9-2520-249-34& P

(6) In reverse gears during normal or pivot

NOTE

steer, the output at the side toward which the turn is

The transmission brakes must be

made rotates clockwise. The opposite side rotates

properly adjusted when using stall

counterclockwise. Both rotations are as viewed from the

check tool (29, table 3-1). Refer to

right side of the transmission.

paragraph 9-5a, below.

f. Converter Stall Test

CAUTION

(3) A low engine speed (under 2100 rpm)

While conducting a stall tests, do not let

may indicate that that the engine is not delivering full

oil temperature in the converter-to-cooler

power.

Refer to TM 9-2815-205-34 for engine

circuit exceed 325F.

The high-

instructions. If high (above 2400 rpm) or low (below

2100 rpm) engine speed is noted, refer to

temperature warning light comes on at

troubleshooting, chapter 4.

this temperature. With the transmission

in neutral, run the engine at 1000 to 1500

9-5.

Adjustments

rpm between tests to cool the oil to

a. Brakes

normal (1800 to 2200F).

(2) Remove the linkage from the left and right

(1) A converter stall test is performed by

brake apply shafts, leaving the shaft splines exposed at

stalling the transmission output, putting the transmission

the top of the transmission. Remove the left and right

in fourth gear accelerating the engine to full throttle, and

brake inspection covers immediately forward of the

noting the maximum rpm the engine will attain. The

brake separately. Install adapter (1, table 3-1) on a

speed attained is then compared to normal stall speed

short 1/2-inch drive socket wrench extension. Use a

2100 to 2400 rpm). Number 2 diesel fuel should be

torque wrench and apply 100 pound feet rotating force

used in the 6V 53T engine during a stall test.

(clockwise on left side, counterclockwise on right side of

(2) To conduct converter stall tests in the

transmissions to the brake apply shaft (fig. 9-6).

vehicle, fully apply vehicle brakes.

To conduct

converter stall tests in the test stand, install the brake

stall check tool (29, table 3-1) after removing the brake

linkage and brake inspection cover at the right side of

the transmission (fig. 9-5). Tighten the stall check tool

until Apply on the brake indicator alines with the

stationary mark on the transmission top cover.

Figure 9-5. Brake stall check tool installed on

transmission.

Figure 9-6. Checking rotation of brake apply shaft

during adjustment of brake.

9-6