(11) Increase engine speed to 1100 rpm and read
Analyzer Flow Meter. The reading should be 2.6
GPM minimum. If flow reading is below specification,
replace power steering pump.
FLOW AND PRESSURE TEST - AT POWER
STEERING GEAR
NOTE: This test should only be done if necessary
after completing the Pump Flow And Pressure Test
(1) Remove Analyzer from pump and pressure hose
to fan. Reattach pressure hose to pump.
(2) Assemble Power Steering Analyzer as follows
(Fig. 2):
(a) Gauge end (inlet) of Flow Meter And Gauge
6800 – Hose 6959, Adapter Fitting 9091-4
(b) Valve end (outlet) of Flow Meter And Gauge
6800 – Hose 6905, Hose 6713, Adapter Tube 9091-2
(3) Unthread pressure hose tube nut from power
steering gear.
(4) Connect power steering pressure hose to
Adapter Fitting 9091-4.
(5) Connect Adapter Tube 9091-2 to power steering
gear.
(6) Open Analyzer test valve completely.
(7) Start engine and allow to idle long enough to
circulate power steering fluid through Analyzer flow
meter and hoses.
(8) Shut off engine and check fluid level; add fluid
as necessary. Repeat Step 7 and Step 8 until air is
bled from system.
(9) Start engine and allow to idle.
(10) Check Analyzer gauge pressure. Initial pres-
sure reading should be 345-552 kPa (50-80 psi). If
pressure is higher, inspect hoses for restrictions and
repair as necessary.
(11) Increase engine speed to 1500 RPM and read
Analyzer Flow Meter. The reading should be 2.4 - 2.8
GPM. If flow reading is below specification, replace
hydraulic fan.
CAUTION: This next step involves testing maximum
fan motor steering relief pressure. Do not leave the
valve closed for more than three seconds.
(12) Close Analyzer valve fully three times for
three seconds each time and record highest pressure
indicated on Analyzer gauge each time. All three
readings must be within fan motor steering relief
pressure specifications.
(13) Completely open test valve and turn steering
wheel to the extreme left and right positions against
stops. Record the highest pressure readings at each
position. If pressure readings are not within 50 psi
from each other, the gear is leaking internally and
must be replaced.
Fig. 1 Analyzer Setup To Test At Pump
1 - HOSE 6959
2 - ADAPTER FITTING 9091-3
3 - FLOW METER AND GAUGE 6800
4 - HOSE 6713
5 - ADAPTER TUBE 9091-1
6 - HOSE 6905
Fig. 2 Analyzer Setup To Test At Gear
1 - HOSE 6905
2 - HOSE 6713
3 - FLOW METER AND GAUGE 6800
4 - ADAPTER FITTING 9091-4
5 - HOSE 6959
6 - ADAPTER TUBE 9091-2
19 - 2 STEERING ZB
STEERING (Continued)
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