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 1027 of 1469

REPAIR

1.

Using bearing punch, remove outer bearing cup (Figure 2, Item 4) from hub (Figure 2, Item 5) by tapping

alternately on outer edges of cup (Figure 2, Item 4). Discard outer bearing cup.

2.

Using bearing punch, remove inner bearing cup (Figure 2, Item 1) from hub (Figure 2, Item 5) by tapping

alternately on outer edges of cup (Figure 2, Item 1). Discard inner bearing cup.

3.

Remove plastic sleeve (Figure 2, Item 2) from hub (Figure 2, Item 5) by splitting and prying out of hub. Discard

sleeve.

NOTE

Bearing and bearing cup must be replaced as a matched set.

4.

Install outer bearing cup (Figure 2, Item 4) in hub (Figure 2, Item 5). Ensure outer bearing cup is seated properly.

5.

Install plastic sleeve (Figure 2, Item 2) on hub (Figure 2, Item 5).

6.

Install inner bearing cup (Figure 2, Item 1) in hub (Figure 2, Item 5). Ensure inner bearing cup is seated properly.

NOTE

•

Perform Steps (7) and (8) if stud failed inspection.

•

Use left-hand threaded studs for hubs mounted on the left-hand side of the vehicle, and

right-hand threaded studs for hubs mounted on the right side of the vehicle.

7.

Remove damaged studs (Figure 2, Item 3) from hub (Figure 2, Item 5). Discard studs.

8.

Install studs (Figure 2, Item 3) on hub (Figure 2, Item 5), as required.

TM 9-2320-272-23-3

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