TM-9-2320-272-23-4

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

TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 4 OF 5

SEPTEMBER 2012

TM-9-2320-272-23-4 - Page 737 of 1393

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 roller (Figure 3, Item 3) and shafts (Figure 3, Items 4 and 5) assemblies with solvent cleaning compound

and allow to air-dry.

2.

Inspect shafts (Figure 3, Items 4 and 5) for cracks. Replace shafts, if cracked.

3.

Measure bearing surfaces of shafts (Figure 3, Items 4 and 5). If outer diameter of bearing surfaces of shafts

is less than 2.245 in. (57.02 mm), replace.

4.

Inspect four thrust washers (Figure 3, Items 1 and 6) for cracks. Replace thrust washers if cracked.

5.

Measure thickness of thrust washers (Figure 3, Items 1 and 6). If thickness of thrust washers is less than

0.055

in. (1.40 mm), replace.

6.

Inspect four bearings (Figure 3, Items 2 and 7) for damage (TM 9-214). If bearings are damaged, replace.

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