TRUCK IS HARD TO STEER. (Cont) -726250851

TM 9-2320-364-34-1

The truck steering operates with 3000 psi (20,685 kPa) hydraulic pressure. A high pressure hydraulic oil stream

can pierce a body and cause severe injury to personnel. Never disconnect any high pressure hydraulic oil line or

fitting without first dropping pressure to zero.

Damage to main steering pump or hydraulic pump control will occur if relief pressure is held for more than 10

seconds.

PRESSURE TEST

(1) Start engine (TM 9-2320-364-10).

(2) While assistant slowly turns steering

wheel in one direction, slowly close

load valve. Pressure should be 1800

psi (12,411 kPa) and flow will drop

to zero and front axles will not steer.

(a) If 1800 to 1825 psi

(12,411 to 12,583 kPa) are not

present, adjust sequence valve

(Para 12-2) or replace sequence

valve (Para 12-13).

(b) If 1800 to 1825 psi

(12,411 to 12,583 kPa) are present,

sequence valve is adjusted

correctly.

(3) Turn OFF ENGINE switch.

(4) Remove flowmeter.

(5) Connect hose 2275 to rear

steering gear.

VERIFY REPAIR

(1) Check steering oil level and add oil

as necessary (TM 9-2320-364-20).

(2) Check steering while truck is moving

at less than 25 mph (40 km/hr).

(3) Check steering while truck is moving

at greater than 25 mph (40 km/hr).

(a) If steering is still difficult, fault not

corrected. Notify supervisor.

(b) If steering is no longer difficult,

fault has been corrected.

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