Table 5-2. Direct Support Troubleshooting-continued -706880685

TM 5-4210-233-14&P-1

Table 5-2. Direct Support Troubleshooting - Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

TRANSMISSION

Perform transmission stall test when power package (engine and transmission) is not performing

satisfactorily. Purpose of test is to find out if transmission or engine is defective.

WARNING

Apply both parking and service brakes when performing

transmission stall test. Block wheels to prevent forward

or reverse movement. In the event of brake failure and/or

improper blocking of wheels, vehicle can suddenly move

forward or backward and may cause personal injury or

death.

Chock wheels to prevent forward or reverse movement.

Set parking brake.

Start engine and set service brakes.

Set transmission to 2 position.

CAUTION

Do not maintain stall condition longer than 30 seconds.

Transmission oil can become overheated and damage to

transmission may occur. Do not allow temperature to

exceed 300 (149 ). Keep close check to prevent

engine cooling system from overheating. If engine over-

heating occurs, place transmission in N (neutral) and run

engine at 1500 to 1800 RPM to cool engine.

Accelerate engine to full throttle. Write down maximum rpm engine will run (torque converter stall speed).

Stall speed should be 2100 rpm ( 150 rpm).

If high engine speed is noted, go to MALFUNCTION 9.

If engine speed is low, go to MALFUNCTION 10.

TRANSMISSION OVERHEATS IN ALL RANGES

Step 1. Oil cooler lines are restricted (can cause excessive fuel consumption). Remove

restrictions; clean or replace lines. (Refer to vehicle service manual).

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