OUTRIGGER CYLINDERS WILL NOT RETRACT.

9-2320-279-20-1

Troubleshooting Malfunctions (Cont)

2-15. TROUBLESHOOTING INSTRUCTIONS (CONT).

Table 2-9. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

MATERIAL HANDLING CRANE (M983) (CONT)

2. CRANE BOOM MOVES SLOWLY (CONT).

Step 3. Check for plugged strainers or filter.

Clean or replace top strainer or filter (para 13-11).

Step 4. Check hydraulic lines from hydraulic pump to crane for looseness or damage, starting at

crane connections.

Tighten loose connections, add oil as required (LO 9-2320-279-12).

If lines are damaged, notify the supervisor.

Step 5. If problem has not been solved, notify the supervisor.

3. OUTRIGGER CYLINDERS WILL NOT RETRACT.

Step 1. Check for loose or damaged hydraulic lines.

Tighten loose lines, add oil as required (LO 9-2320-279-12).

If lines are damaged, notify the supervisor.

Step 2. If problem remains, notify the supervisor.

MATERIAL HANDLING CRANE (M977, M985, M984E1)

CRANE WILL NOT OPERATE.

Step 1. Check for faulty hydraulic system operation.

Refer to HYDRAULIC SYSTEM Troubleshooting.