TM-9-2320-272-23-5
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 5 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-5 - Page 386 of 623
FIELD MAINTENANCE
TACHOMETER DRIVE REPLACEMENT
INITIAL SETUP:
Tools and Special Tools
Tool Kit, General Mechanic's: Automotive
(WP
0826, Table 1, Item 56)
Materials/Parts
Gasket (WP
0827, Table 1, Item 129) Qty:
1
Gasket (WP
0827, Table 1, Item 150) Qty:
1
References
WP
0819
Equipment Condition
Parking brake set. (TM 9-2320-272-10)
Hood raised and secured. (TM 9-2320-272-10)
REMOVAL
1.
Disconnect tachometer drive cable (Figure 1, Item 5) from tachometer drive (Figure 1, Item 6).
2.
Remove cover (Figure 1, Item 9) and gasket (Figure 1, Item 1) from front gearcase cover (Figure 1, Item 2) by
turning cover and seal (Figure 1, Item 1) counterclockwise. Discard gasket.
3.
Remove drive hub (Figure 1, Item 3) from tachometer drive (Figure 1, Item 6).
4.
Remove two screws (Figure 1, Item 7), washers (Figure 1, Item 8), tachometer drive (Figure 1, Item 6), and
gasket (Figure 1, Item 4) from cover (Figure 1, Item 9). Discard gasket.
M9024DAA
7
8
9
1
2
3
4
5
6
Figure 1.
Tachometer Drive Removal.
END OF TASK
TM 9-2320-272-23-5
0816
0816-1
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