Table 3-1. Operator/Crew Preventive Maintenance Checks and Services - Continued

TM 10-3930-630-12

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

7. ENGINE OIL PRESSURE LOW.

Step 1. Check crankcase oil level (para 4-14).

Refill crankcase with proper grade of oil. Refer to current Lubrication Order.

Step 2. Check oil lines for leakage (para 4-13).

If oil lines are leaking, notify organizational maintenance.

Step 3. Check oil filter (para 4-13).

If oil filter is dirty, refer to organizational maintenance.

Step 4. Check oil pressure gage (para 2-2).

If oil pressure gage is defective, notify organizational maintenance.

8. STARTER WILL NOT CRANK ENGINE.

Step 1. Check transmission shift lever.

Place transmission shift lever in neutral (N) position (para 2-4).

Step 2. Check battery and cables.

Tighten cables or notify organizational maintenance if battery or cables are defective.

Step 3. Check neutral start switch.

Notify organizational maintenance if switch is defective.

Step 4. Check starter connections and operation.

Tighten connections. Notify organizational maintenance if starter is defective.

9. TRUCK DOES NOT MOVE WHEN ACCELERATOR IS DEPRESSED.

Step. 1. Check transmission shift lever (para 2-6).

Place transmission shift in forward (F) or reverse (R) to move truck.

Step 2. Check parking brake (para 2-5).

Disengage parking brake if necessary.

Step 3. Check oil level in transmission (para 3-16).

Replenish transmission oil if necessary.

10. TILT AND LIFT MECHANISMS DO NOT OPERATE WHEN LEVERS ARE ACTUATED.

Step 1. Check hydraulic filter indicator (para 3-17).

If indicator is in red zone, notify organizational maintenance to service filter.

Step 2. Check hydraulic reservoir oil level (para 3-18).

Replenish hydraulic oil if necessary. Refer to current Lubrication Order. Check hydraulic system

for leaks. Notify organizational maintenance if service is required.

11. SERVICE BRAKES DO NOT STOP TRUCK PROPERLY.

Step 1. Check brake pedal and linkage (para 2-5).

If linkage and pedal require adjustment, refer to organizational maintenance.

Step 2. Check fluid level in master cylinder (para 4-11).

If fluid level is low, notify organizational maintenance.

12. PARKING BRAKE DOES NOT HOLD TRUCK ON SLOPE.

Step 1. Adjust parking brake lever.

Loosen setscrew and turn knurled top of lever clockwise to adjust parking brake. Tighten setscrew.

Step 2. Check parking brake (para 2-5).

Notify organizational maintenance if parking brake requires service.

13. TRUCK DOES NOT STEER PROPERLY.

Step 1. Check connections to steering valve and cylinder.

Tighten connections or notify organizational maintenance if valve or cylinder are defective.

Step 2. Check hydraulic system for leaks (para 3-18).

Tighten connections or notify organizational maintenance if components need replacement.

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