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 977 of 1469
REMOVAL
WARNING
Do not disconnect air lines or hoses before draining air reservoirs. Small parts under pressure
may shoot out with high velocity. Failure to comply may result in injury or death to personnel.
NOTE
•
Double check valve No. 1 is located inside the front left frame rail and left of the front
axle
differential.
•
Tag air lines for installation.
1.
Disconnect line (Figure 1, Item 1) from double check valve No.1 adapter (Figure 1, Item 2).
2.
Disconnect line (Figure 1, Item 12) from valve adapter (Figure 1, Item 11).
3.
Disconnect line (Figure 1, Item 9) from tee (Figure 1, Item 10).
4.
Remove tee (Figure 1, Item 10) from double check valve No. 1 (Figure 1, Item 3).
5.
Disconnect line (Figure 1, Item 5) from valve adapter (Figure 1, Item 7).
6.
Remove locknut (Figure 1, Item 8), screw (Figure 1, Item 4), and double check valve No. 1 (Figure 1, Item 3)
from frame rail (Figure 1, Item 6). Discard locknut.
2
9
6
10
11
12
8
7
5
4
3
1
M6255DAA
Figure 1.
Double Check Valve No. 1 Removal.
END OF TASK
TM 9-2320-272-23-3
0473
0473-2
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