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 1187 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 steering system damage.

NOTE

•

Have container ready to catch hydraulic oil.

•

Tag all hydraulic lines and hoses for installation.

1.

Remove nut (Figure 1, Item 5), screw (Figure 1, Item 13), and retaining strap (Figure 1, Item 4) from pump

return hose (Figure 1, Item 3) and return tube (Figure 1, Item 6).

2.

Loosen two hose clamps (Figure 1, Item 2) and remove pump return hose (Figure 1, Item 3) from pump nozzle

(Figure 1, Item 1) and return tube (Figure 1, Item 6).

3.

Disconnect pump return tube (Figure 1, Item 6) from steering gear adapter (Figure 1, Item 7).

4.

Disconnect pump pressure hose (Figure 1, Item 12) from pump adapter (Figure 1, Item 14) and steering gear

adapter elbow (Figure 1, Item 11).

5.

Remove adapter (Figure 1, Item 7) and o-ring (Figure 1, Item 8) from steering gear (Figure 1, Item 9).

Discard

o-ring.

6.

Remove adapter elbow (Figure 1, Item 11) and o-ring (Figure 1, Item 10) from steering gear

(Figure

1,

Item

9). Discard o-ring.

TM 9-2320-272-23-3

0506

0506-2