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 739 of 1469
CHECKING BRAKE SHOE AND MECHANISM WEAR - Continued
4.
Inspect brake shoe linings (Figure 4, Item 1) for cracks, chips, and oil contamination. If cracked, chipped, or
contaminated, replace brake shoes (Figure 4, Item 4) (WP
0426).
5.
Inspect plunger seals (Figure 4, Item 6). Notify Field Maintenance if rotted or torn.
6.
Inspect shoe return springs (Figure 4, Item 5) for stretching, bluing, cracks, and uneven coils. Replace return
springs showing any of these defects.
7.
Inspect brake chambers (Figure 4, Item 2) for cracks and bends at point where chamber enters plunger
(Figure
4,
Item
3). Replace chamber(s) if cracked or bent.
END OF TASK
FOLLOW-ON MAINTENANCE
1.
Install front hub and drum. (WP
0479) or (WP
0481)
2.
Install rear hub and drum. (WP
0480) or (WP
0482)
END OF TASK
END OF WORK PACKAGE
TM 9-2320-272-23-3
0432
0432-6
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