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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