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 1165 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 after disconnecting hydraulic lines and hoses to prevent

contamination. Failure to do so may result in steering system damage.

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.

•

Tag all hydraulic lines and hoses for installation.

1.

Loosen clamp (Figure 1, Item 4) and remove hose (Figure 1, Item 5) from steering pump return tube

(Figure

1,

Item

3).

2.

Loosen nut (Figure 1, Item 7) and remove high-pressure hose (Figure 1, Item 6) from steering pump high-

pressure fitting (Figure 1, Item 8).

3.

Remove three screws (Figure 1, Item 17), lockwashers (Figure 1, Item 18), and steering pump

(Figure

1,

Item

2) from mounting bracket (Figure 1, Item 16). Discard lockwashers.

4.

Remove locknut (Figure 1, Item 9), washer (Figure 1, Item 10), screw (Figure 1, Item 13), washer

(Figure

1,

Item

12), screw (Figure 1, Item 14), washer (Figure 1, Item 15), and adjusting link

(Figure

1,

Item

11) from mounting bracket (Figure 1, Item 16) and engine (Figure 1, Item 19). Discard locknut.

TM 9-2320-272-23-3

0503

0503-2