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 875 of 1469
INSTALLATION
NOTE
•
If new double check valve is being installed, use fittings from old double check valve.
•
Apply sealing compound to all male pipe threads before installation.
1.
Install adapter (Figure 2, Item 9) on double check valve No. 6 (Figure 2, Item 5).
2.
Install elbow (Figure 2, Item 3) on double check valve (Figure 2, Item 5).
3.
Install tee fitting (Figure 2, Item 12) on elbow (Figure 2, Item 11).
4.
Install elbow (Figure 2, Item 11) with tee fitting (Figure 2, Item 12) on double check valve (Figure 2, Item 5).
5.
Install double check valve (Figure 2, Item 5) on frame rail (Figure 2, Item 4) with screw (Figure 2, Item 6) and
locknut (Figure 2, Item 10).
6.
Install service air line (Figure 2, Item 1) on elbow (Figure 2, Item 3) and tighten nut (Figure 2, Item 2).
7.
Install air line (Figure 2, Item 14) on tee fitting (Figure 2, Item 12) and tighten nut (Figure 2, Item 13).
8.
Install inversion valve air line (Figure 2, Item 16) on tee fitting (Figure 2, Item 12) and tighten nut
(Figure
2,
Item 15).
9.
Install primary delivery air line (Figure 2, Item 8) on adapter (Figure 2, Item 9) and tighten nut
(Figure
2,
Item
7).
M9390DAA
10
11
12
8
7
6
9
13
14
15
16
1
2
5
4
3
Figure 2.
Double Check Valve No. 6 Installation.
END OF TASK
FOLLOW-ON MAINTENANCE
1.
Start engine and allow air pressure to build to normal operating range. Check for air leaks at double check
valve No. 6. (TM 9-2320-272-10)
2.
Road test vehicle. (TM 9-2320-272-10)
END OF TASK
END OF WORK PACKAGE
TM 9-2320-272-23-3
0454
0454-4
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