Section VII. RADIO INTERFERENCE SUPPRESSION

TM 10-3930-632-12

Table 4-2. Troubleshooting-Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

HYDRAULIC SYSTEM-Continued

1. HYDRAULIC PUMP NOT DELIVERING OIL-Continued

Step 3. Check to insure that proper viscosity oil is being used.

Fill tank with oil as specified in lubrication order.

Step 4. Check for clogged line or hydraulic filter.

Clear obstructions in lines. Replace filter (para 4-27).

Step 5. Check pump to insure proper operation.

Report defective pump to direct support maintenance personnel.

2. FORKS DO NOT LIFT TO MAXIMUM HEIGHT.

Step 1. Check hydraulic fluid level.

Fill hydraulic tank with fluid as specified in lubrication order.

3. LIFT OR TILT ACTION FAILS.

Step 1. Test hydraulic fluid pressure.

Refer to HYDRAULIC PUMP NOT DELIVERING OIL, Item 1.

Step 2. Check for oil leak at top of lift cylinder.

Report leak to direct support maintenance personnel.

Step 3. Inspect tilt cylinder for leaks around piston rod.

Repair or replace tilt cylinder (para 4-25).

4. LOAD IS NOT LIFTED EVENLY.

Step 1. Check to insure that load weight is centered over forks.

Center load weight over forks.

Step 2. Check lift chain alignment.

Adjust lift chains (pare 4-26).

TRANSMISSION

1. TRUCK WILL NOT MOVE IN EITHER DIRECTION.

Step 1. Check to insure that parking brake is released.

Release parking brake.

Step 2. Check transmission oil level.

Fill transmission with oil as specified in lubrication order.

Step 3. Check for proper linkage adjustment.

Adjust transmission shift linkage (para 4-83).

2. TRUCK WILL MOVE ONLY IN ONE DIRECTION.

Step 1. Check transmission linkage for proper adjustment.

Adjust transmission shift linkage (para 4-83).

3. TRUCK MOVES SLOWLY AT FULL THROTTLE.

Step 1. Check transmission oil level.

Fill transmission with oil as specified in lubrication order.

Step 2. Check for dragging brakes.

Refer to BRAKES DRAG, Item 2.

4. TRANSMISSION OVERHEATING.

Step 1. Check transmission oil level.

Fill transmission with oil as specified in lubrication order.

Step 2. Check for dragging brakes.

Refer to BRAKES DRAG, Item 2.

Step 3. Check for obstructed or plugged radiator.

Flush radiator. Clear obstructions (para 4-53).

Section VII. RADIO INTERFERENCE SUPPRESSION

4-12.

General Methods Used to Attain Proper

4-13.

Interference Suppression Components.

Suppression

a. Primary Suppression Components. The

primary suppression components are those whose

Essentially, suppression is attained by providing a low

primary function is to suppress radio interference.

resistance path to ground for stray currents. The

These components are described and located in figure

methods used include shielding the ignition and high-

4-1.

frequency wires, grounding the frame with bonding

straps, and using capacitors and resistors.

4-13