TM-9-2320-279-10-2

M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)

OPERATOR’S MANUAL VOLUME 2 OF 2

DECEMBER 1998

CHANGE 3

TM-9-2320-279-10-2 - Page 764 of 819

TM 9-2320-279-10-2

Troubleshooting Malfunctions (Cont)

Table 3-4. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

MATERIAL HANDLING CRANE (M984E1) (CONT)

1.

BOOM OPERATION ABNORMAL WHEN TELESCOPING IN OR

OUT.

Step 1. Check that POWER ON/OFF Switch is in ON position (para 2-63).

Step 2. Check that boom sections are lubricated (LO 9-2320-279-12).

If there are dry sections, notify organizational

maintenance.

Step 3. If boom operation is still abnormal, there may be air in cylinders.

Lower boom below horizontal position.

Fully TELESCOPE boom IN and OUT several times to

remove air from cylinders.

Step 4. If problem remains, notify organizational maintenance.

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