CRANE BOOM MOVES SLOWLY.

TM 9-2320-279-20-1

Troubleshooting Malfunctions (Cent)

Malfunction

Test or Inspection

Corrective Action

MATERIAL HANDLING CRANE

CRANE DOES NOT FUNCTION

Step 1. Check position of selector valve on fender (TM 9-2320-279-10).

Put selector valve in proper position (TM 9-2320-279-10).

Step 2. Check selector valve for leaks or damage.

19-14).

Replace selector valve if leaking or damaged

Step 3. Go to HYDRAULIC SYSTEM Troubleshooting and make checks shown for

MALFUNCTIONS 1 and 2.

2. CRANE BOOM MOVES SLOWLY.

HIGH

ENGINE

IDLE ASSEMBLY

TA1 88050

Step 1. Check that ENGINE HIGH IDLE assembly changes engine speed to 1500

50 rpm when

engaged (TM 9-2320-279-10).

If engine speed does not increase to 1500 50 rpm, refer to ENGINE

Troubleshooting, MALFUNCTION 6, ENGINE HIGH IDLE DOES NOT OPERATE.

Step 2. Go to HYDRAULIC SYSTEM Troubleshooting and make checks shown for

MALFUNCTIONS 1 and 2. Return to this section if problem is not fixed.