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 552 of 1417

CLEANING AND INSPECTION

WARNING

Solvent cleaning compound is flammable and toxic. Do not use near an open flame and

always have a fire extinguisher nearby when solvents are used. Use only in well-ventilated

places, wear protective clothing, and dispose of cleaning rags in approved container. Failure

to comply may result in damage to equipment, injury, or death to personnel.

1.

Clean remains of valve cover gasket and gasket sealant from valve cover and cylinder head.

2.

Clean breather tube with solvent cleaning compound and dry with clean rag.

3.

Inspect breather tube for obstructions or collapsed and bent sections that could cause restrictions. Remove

obstructions or replace breather tube if bent.

4.

Inspect hoses for obstructions, tears, flat spots, or other deformities that could cause restrictions. Remove

obstructions or replace hoses if torn or deformed.

5.

Inspect vent connector. Replace if nicked, cracked, or damaged.

6.

Inspect valve cover for distortion, cracks, or nicks in casting that would prevent a tight seal. Replace if damaged.

END OF TASK

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