FORKLIFT

TM 5-2420-224-34

Table 2-1. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

FORKLIFT

24. ERRATIC UP AND DOWN MOVEMENT OF FORKLIFT.

Step 1. Check for air in lift cylinder.

Bleed air from lift cylinder (page 11-51).

Step 2.

Check lift cylinder sequencing.

Sequence

lift

cylinder

(page

11-51).

Step 3. Check load rollers adjustment.

Adjust

load

roller(s)

(page

20-155).

Step 4. Check for bent or damaged lift cylinder plungers.

Replace

lift

cylinder

(page

11-51).

Step 5. Check for leaks or binding of front loader/forklift control valve.

Replace

front

loader/forklift

control

valve

(page

11-28).

HD45 HAMMER DRILL

25. HAMMER DRILL WILL NOT OPERATE OR OPERATES SLOWLY.

Step 1. Check for low accumulator charge (pressure hose will pulse more than normal).

Charge

accumulator

(page

21-1).

Step 2.

Perform Malfunction 20.

IMPACT WRENCH

26. IMPACT WRENCH PERFORMS POORLY OR HAS LOW IMPACT.

Step 1.

Perform Malfunction 20.

Step 2. Check for broken hammer pins.

Replace

hammer

pin(s)

(page

21-15).

27. IMPACT WRENCH OPERATES TOO FAST.

Step 1. Check engine rpm setting.

Set engine rpm to 2000 rpm.

Step 2. Check for damaged relief spring or valve sleeve.

Repair

impact

wrench

(page

21-15).

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