TM-9-2320-272-23-2

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

TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 2 OF 5

SEPTEMBER 2012

TM-9-2320-272-23-2 - Page 330 of 1417

FIELD MAINTENANCE

NG130: ENGINE TIGHTNESS TEST

INITIAL SETUP:

Personnel Required

(2)

References

WP

0211

References (cont.)

WP

0212

WP

0303

TROUBLESHOOTING PROCEDURE

NG130: ENGINE TIGHTNESS TEST

STEP

WARNING

Ensure engine fuel is shut off before proceeding. Failure to comply may result in injury or

death to personnel.

1.

Perform engine tightness test.

Rotate engine by hand and check for tightness.

CONDITION/INDICATION

Does engine rotate freely?

DECISION

YES - Replace starter (WP

0303). After completing repair, GO-Chain tests to verify problem is solved and no

other problem exists.

NO - Replace engine

M939/A1 (WP

0211),

M939A2 (WP

0212).

END OF WORK PACKAGE

TM 9-2320-272-23-2

0205

0205-1/2 blank