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 1181 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 hydraulic lines and hoses to prevent

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

1.

Remove nut (Figure 1, Item 13), screw (Figure 1, Item 12), and retaining strap (Figure 1, Item 4) from pump

return hose (Figure 1, Item 3) and return tube (Figure 1, Item 5).

NOTE

Have container ready to catch hydraulic oil.

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 5).

3.

Disconnect pump return tube (Figure 1, Item 5) from steering gear adapter (Figure 1, Item 6).

4.

Disconnect pump pressure hose (Figure 1, Item 11) from pump adapter (Figure 1, Item 14) and steering gear

adapter elbow (Figure 1, Item 10).

5.

Remove adapter (Figure 1, Item 6) from steering gear (Figure 1, Item 7).

6.

Loosen jamnut (Figure 1, Item 9) and remove elbow (Figure 1, Item 10) and o-ring (Figure 1, Item 8) from

steering gear (Figure 1, Item 7). Discard

o-ring.

TM 9-2320-272-23-3

0505

0505-2