TM 9-2320-363-34-1
NOTE
To make thorough test of vehicle-mounted transmission, be sure that engine is
properly tuned and that oil level in transmission is correct.
Perform transmission stall test when power package (engine and transmission) is not
performing satisfactorily. Purpose 0f test is to determine if transmission or engine is defective.
W A R N I N G
Apply parking brake when performing transmission stall test. Block wheels to
p r e v e n t f o r w a r d o r r e v e r s e m o v e m e n t . I n e v e n t o f b r a k e f a i l u r e a n d / o r
Improper blocking of wheels, vehicle can suddenly move forward or backward
and could cause personal injury or death.
1.
Block wheels to prevent forward or reverse movement.
2.
Start engine and set parking brake.
3.
Put transfer case in high range and set transmission to 2nd gear.
C A U T I O N
Do not maintain stall condition longer than 30 seconds. Transmission oil can
become overheated and damage to transmission could occur. Do not allow
temperature to exceed 300°F (140°C). Keep close check to prevent cooling
system from overheating.
4.
Accelerate engine to full throttle. Write down maximum rpm that engine will run (torque converter
stall speed). Stall speed should be 2100 rpm ±150 rpm.
l If engine speed is high, go to Transmission Malfunction 10.
l If engine speed is low, go to Transmission Malfunction 11.
Troubleshooting Symptom Index
Malfunction
Number
Malfunction
Troubleshooting
Procedure
Page
ENGINE
1.
ENGINE FAILS TO CRANK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-5
2.
ENGINE CRANKS BUT FAILS TO START
. . . . . . . . . . . . . . . . . . . . . . . .
2-5
3.
ENGINE RUNS ERRATICALLY
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6
4.
ENGINE OVERHEATS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6
5.
ENGINE RETARDER (JAKE BRAKE) NOT OPERATING
. . . . . . . . . . . . . . . .
2-6
2-3
