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

  TM-9-2320-272-23-3 - Page 883 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
•
Tag air lines for installation.
•
Mark fitting direction for installation.
•
Optional Front Limiting Valve is supplied with all necessary hardware. Removal of fittings
is not necessary.
•
Perform Steps (3, 8, and 11) only if an early LQ-2 valve is being removed and installed.
1.
Remove two tiedown straps (Figure 1, Item 19) from air lines (Figure 1, Items 17, 18, and 22).
Discard
tiedown
straps.
2.
Loosen nut (Figure 1, Item 23) and remove air line (Figure 1, Item 22) from elbow (Figure 1, Item 1) on top of
brake LQ-2 valve (Figure 1, Item 20).
3.
Loosen nuts (Figure 1, Items 10 and 24) and remove air line (Figure 1, Item 7) from elbow (Figure 1, Item 21)
and adapter (Figure 1, Item 11) on tee fitting (Figure 1, Item 12).
4.
Loosen nut (Figure 1, Item 14) and remove air line (Figure 1, Item 18) from adapter (Figure 1, Item 13) on tee
fitting (Figure 1, Item 12).
5.
Loosen nut (Figure 1, Item 16) and remove air line (Figure 1, Item 17) from adapter (Figure 1, Item 15) on
brake LQ-2 valve (Figure 1, Item 20).
6.
Loosen nut (Figure 1, Item 5) and remove air line (Figure 1, Item 6) from adapter (Figure 1, Item 4) on brake
LQ-2 valve (Figure 1, Item 20).
7.
Remove two locknuts (Figure 1, Item 8), screws (Figure 1, Item 2), washers (Figure 1, Item 3), and brake LQ-2
valve (Figure 1, Item 20) from bracket (Figure 1, Item 9).
8.
Remove elbows (Figure 1, Items 1 and 21) from top of brake LQ-2 valve (Figure 1, Item 20).
9.
Remove adapters (Figure 1, Items 4 and 16) from sides of brake LQ-2 valve (Figure 1, Item 20).
10.
Remove adapters (Figure 1, Items 11 and 13) from tee fitting (Figure 1, Item 12).
11.
Remove tee fitting (Figure 1, Item 12) from bottom of brake LQ-2 valve (Figure 1, Item 20).
TM 9-2320-272-23-3
0456
0456-2


Back to Top