TM-9-2320-272-23-3

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

TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 3 OF 5

SEPTEMBER 2012

TM-9-2320-272-23-3 - Page 1037 of 1469

CLEANING AND INSPECTION

1.

For General Cleaning Instructions, refer to (Volume 5, WP

0819).

2.

For General Inspection Instructions, refer to (Volume 5, WP

0819).

NOTE

Bearings and bearing cups must be replaced as a matched set.

3.

Inspect inner bearing cup (Figure 2, Item 1) and outer bearing cup (Figure 2, Item 4), for cracks, chips, or

excessive wear. Replace bearing(s) and bearing cup(s) if damaged.

4.

Inspect plastic sleeve (Figure 2, Item 6) for excessive wear. Replace plastic sleeve (Figure 2, Item 6) if worn.

5.

Inspect studs (Figure 2, Item 2), oil slinger (Figure 2, Item 3), and hub (Figure 2, Item 5) for stripped threads,

chips, and cracks. Replace damaged parts.

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