TM-9-2320-272-24-2

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 2 OF 4

JUNE 1998

TM-9-2320-272-24-2 - Page 702 of 991

TM 9-2320-272-24-2

Table 4-1. Mechanical Troubleshooting (Contd).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

NOTE

Perform steps j. and k. for M930/A1/A2 model vehicles.

j.

Remove caps (3) and plugs (4) from elbows (5) and (6) and hoses (1) and (2).

k.

Connect front winch input hose (2) and output hose (1) to elbows (6) and (5).

Step 9. Remove hydraulic pump suction line (para. 4-147) and inspect for bends, kinks, or

restrictions.

a.

If bends, kinks, or restrictions are present, replace hydraulic pump suction line

(para. 4-147).

b.

If restrictions are not present, replace hydraulic pump (para. 4-150).

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