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 1197 of 1469

REMOVAL
WARNING
Do not start engine when steering assist cylinder hoses are disconnected. Pressure may whip
hoses. Failure to comply may result in injury or death to personnel.
CAUTION
Cap or plug all openings immediately after disconnecting lines and hoses to prevent
contamination. Failure to do so may result in damage to equipment.
1.
Remove two locknuts (Figure 1, Item 16), screws (Figure 1, Item 5), spacers (Figure 1, Item 4), and four clamps
(Figure 1, Item 3) from crossmember (Figure 1, Item 15). Discard locknuts.
NOTE
•
Have drainage container ready to catch hydraulic oil.
•
Use drain pans to retain leaking/draining fluids. Refer to local procedures and plans for
preventing and responding to fluid spills or leaks. Comply with local regulations when
disposing of clean up material and leaked and spilled fluids.
•
Step (2) applies to Ross steering gears only.
•
Steps (3), (4), and (5) apply to Sheppard steering gears only.
2.
Loosen nuts (Figure 1, Items 10 and 13) and remove pressure lines (Figure 1, Items 11 and 14) from elbow
(Figure 1, Item 12) and adapter (Figure 1, Item 9).
3.
Loosen nuts (Figure 1, Items 22 and 23) and remove pressure lines (Figure 1, Items 11 and 14) from elbows
(Figure 1, Items 21 and 24).
4.
Loosen nut (Figure 1, Item 20) and remove elbows (Figure 1, Items 21 and 24) from extension line
(Figure
1,
Item
19) and elbow (Figure 1, Item 12).
5.
Loosen nut (Figure 1, Item 18) and remove extension line (Figure 1, Item 19) from adapter (Figure 1, Item 9).
6.
Remove adapter (Figure 1, Item 9) and preformed packing (Figure 1, Item 8) from steering gear
(Figure 1, Item 6). Discard preformed packing.
7.
Remove elbow (Figure 1, Item 12) and preformed packing (Figure 1, Item 7) from steering gear
(Figure 1, Item 6). Discard preformed packing.
8.
Remove tiedown strap (Figure 1, Item 1) from pressure lines (Figure 1, Items 11 and 14). Discard tiedown
straps.
9.
Loosen two nuts (Figure 1, Item 17) and disconnect pressure lines (Figure 1, Items 11 and 14) from two elbows
(Figure 1, Item 2).
10.
Disconnect two hoses (Figure 1, Item 26) from elbows (Figure 1, Item 27).
11.
Remove two nuts (Figure 1, Item 28) and elbows (Figure 1, Item 27) from frame rail (Figure 1, Item 25).
TM 9-2320-272-23-3
0508
0508-2


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