NO RECOVERY (Cont)

TM 9-2320-285-24-2

3-27.

STEERING SYSTEM TROUBLESHOOTING (CONT)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

4. NO RECOVERY (Cont)

NOTE

If you do not draw enough air out of the power steering reservoir, hydraulic oil will gush out of

hose when performing the following procedure (some loss of oil is normal).

With vacuum pump operating, disconnect power steering pump main supply hose at power

steering pump (para 2-58b).

Connect 10 GPM flowmeter inlet hose to power steering pump.

Connect flowmeter outlet hose to main supply hose disconnected from power steering

pump.

Turn off vacuum pump and disconnect from power steering reservoir.

Set flowmeter volume control for 10 US GPM and open flowmeter load valve.

Check power steering reservoir oil level; add oil if level is low (para 2-58c).

Start vehicle engine and operate at 1200 RPM.

Close flowmeter load valve until flowmeter pressure gage indicates 100 psi.

Flowmeter volume reading should be 4.0 GPM.

a. If flowmeter volume reading is not 4.0 GPM, remove and repair power steering pump (para 3-

28f).

b. If flowmeter volume reading is 4.0 GPM, proceed to step 5 below.

Step 5.

Increase engine speed to 1500 RPM.

If necessary, readjust flowmeter load valve to obtain 100 psi pressure indication.

Flowmeter volume reading should be 5.5 GPM.

a. If flowmeter volume reading is not 5.5 GPM, remove and repair power steering pump (para 3-

28f).

b. If flowmeter volume reading is 5.5 GPM, shut down engine, connect and turn on vacuum pump,

and disconnect flowmeter. Reconnect power steering pump main supply hose to pump (para 2-

58b), and turn off and disconnect vacuum pump. Check oil level; add oil if level is low (para 2-

58c). Then proceed to step 6 below.

Step 6.

Remove power steering gear (para 3-28d).

Remove valve assembly from power steering gear (para 3-28d). Carefully remove valve spool from

valve assembly. Check valve spool for damage or wear.

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