TM-9-2320-272-23-4

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 4 OF 5

SEPTEMBER 2012
TM-9-2320-272-23-4

  TM-9-2320-272-23-4 - Page 1357 of 1393

REMOVAL (M939/A1)
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 all hoses and lines for installation.
•
All lines are removed the same way for M939/A1 and A2.
1.
Remove two locknuts (Figure 1, Item 25), screws (Figure 1, Item 18), and clamp (Figure 1, Item 19) from fording
cable bracket (Figure 1, Item 24). Discard locknuts.
2.
Loosen screw (Figure 1, Item 29) and remove control cable (Figure 1, Item 26) from nut (Figure 1, Item 28).
3.
Disconnect supply hose (Figure 1, Item 20) from pressurized valve adapter (Figure 1, Item 21).
NOTE
Perform Step (4) for vehicles equipped with positive crankcase ventilation system.
4.
Remove two clamps (Figure 1, Item 33), hose (Figure 1, Item 35), and crankcase vent tube (Figure 1, Item 32)
from pressurization valve elbow (Figure 1, Item 34).
5.
Remove two clamps (Figure 1, Item 16), hose (Figure 1, Item 17), and crankcase breather tube
(Figure
1,
Item
15) from pressurization valve elbow (Figure 1, Item 27).
6.
Disconnect pressurization hose (Figure 1, Item 6) and vent hose (Figure 1, Item 5) from pressurization valve
connectors (Figure 1, Item 7).
7.
Remove locknut (Figure 1, Item 8), screw (Figure 1, Item 12), clamp (Figure 1, Item 11), and power steering
pump hose (Figure 1, Item 13) from bracket (Figure 1, Item 9) on radiator support bracket (Figure 1, Item 10).
Discard locknut.
8.
Disconnect power steering pump hose (Figure 1, Item 13) from pressurization valve connector
(Figure
1,
Item
14).
9.
Remove two clamps (Figure 1, Item 1) and hose (Figure 1, Item 2) from crankcase breather (Figure 1, Item 3)
and pressurization valve (Figure 1, Item 22).
10.
Remove screw (Figure 1, Item 30), lockwasher (Figure 1, Item 31), and pressurization valve
(Figure
1,
Item
22) with bracket (Figure 1, Item 23) from rocker lever cover (Figure 1, Item 4).
Discard
lockwasher.
TM 9-2320-272-23-4
0769
0769-2


Back to Top