Table 7. Differential Troubleshooting Procedures

TM 9-2320-361-24-1

0008 00

MECHANICAL SYSTEMS TROUBLESHOOTING - DIRECT SUPPORT (Contd)

Table 7. Differential Troubleshooting Procedures.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. Check transfer case operation and

1. DIFFERENTIAL NOISY

noise. (Refer to WP 0008 00, table

6, malfunction 4.)

2. Check differential operation.

If tires still do not rotate, replace

Remove differential drive

differential assembly (WP 0454 00).

propeller shafts (WP 0139 00).

Raise wheels and manually turn

wheels and observe differential

operation.

Check differential internal operation. Remove differential and disassemble.

2. DIFFERENTIAL

Repair or replace as necessary

CLUNKS DURING

(WP 0454 00 and WP 0455 00).

TURNS OR INITIAL

TAKEOFF

1. Check differential shaft seals

1. If oil is present, replace seals and

3. DIFFERENTIAL LEAKS

condition. Inspect for presence of

gaskets (WP 0149 00).

OIL

gear oil at gaskets and companion

2. If seals replacement does not

flange areas.

correct problem and leak

continues, remove differential and

repair (WP 0454 00 and

WP 0455 00).

1. If axle housing has pinhole leaks,

2. Check axle housing condition.

repair or replace axle housing

Inspect axle housing for external

(WP 0148 00 and WP 0151 00).

evidence of gear oil.

2. If axle housing is cracked or

damaged, replace (WP 0148 00

and WP 0151 00).

Check steering knuckle sleeve

1. If steering knuckle sleeve

4. ABNORMAL TIRE

bushings condition and end play.

bushings are defective, replace

WEAR (FRONT AXLE)

(WP 0150 00).

2. If steering knuckle end play is

excessive, adjust (replace with

correct shim) (WP 0150 00).

3. If steering knuckle end play

remains excessive, replace sleeves

or axle housing (WP 0148 00 and

WP 0150 00).

Check rear end frame and

If alignment is incorrect, adjust

5. ABNORMAL TIRE

suspension alignment (WP 0206 00).

(WP 0206 00).

WEAR (REAR AXLE)

0008 00-23