03-01-02
Suspension — Steering, Wheels And Tires — General Service
03-01-02
1 TESTING
POWER STEERING-
PRELIMINARY TESTS
The following preliminary checks
should always be made before per-
forming any operations.
AIR BLEEDING
Air in the power steering system
(shown by bubbles in the fluid) should
be bled. After making sure that the
reservoir is filled to specification (the
fluid must be at normal operating
temperature when the check is made),
turn the steering wheel through its full
travel three or four times. Do not hold
the wheels against their stops. Re-
check the fluid level.
CHECK FLUID LEVEL
Run the engine until the fluid is at
normal operating temperature. Then
turn the steering wheel all the way to
the left and right several times, and
shut off the engine.
Check the fluid level in the power
steering reservoir. The level must show
on the cross hatching between the bot-
tom of the dipstick and the full mark
(Fig. 1). If the level is low, add
enough automatic transmission fluid
C1AZ-19582-A to raise the level to
the F mark on the dipstick. Do not
overfill the reservoir.
CHECK PUMP BELT
If the pump belt is broken, glazed,
or worn, replace it with a new belt.
Use only the specified type of belt.
Refer to Part 3-13 for belt adjustment
procedure.
CHECK FOR FLUID
LEAKS
With the engine idling, turn the
steering wheel from stop to stop sever-
al times. Check all possible leakage
points. Tighten all loose fittings, and
replace any damaged lines or defective
seats.
CHECK TURNING EFFORT
With the front wheels properly al-
igned and tire pressures correct, check
the effort required to turn the steering
wheel.
G 1508- A
FIG.
1—Power
Steering Pump
Dipstick
1.
With the vehicle on dry concrete,
set the parking brakes.
2.
With the engine warmed up and
running at idle speed, turn the steering
wheel to the left and right several
times to warm the fluid.
3.
Attach a pull scale to the rim of
the steering wheel. Measure the pull
required to turn the wheel one com-
plete revolution in each direction. The
effort required to rotate the steering
wheel should not exceed specifications
given in Part 3-13.
POWER STEERING PUMP FLOW
AND PRESSURE TESTS—
EXCEPT LINCOLN CONTINENTAL
AND CONTINENTAL MARK III
The power steering flow and pres-
sure tests will show whether the pump,
steering gear or power assist control
RETURN LINE
POWER
STEERING PUMP
Sr
valve is causing the trouble. Steps out-
lined below should be followed to de-
termine the cause of the trouble.
PUMP FLOW TEST
1.
Depending on the equipment
present on the vehicle (air condition-
ing, power brakes, standard transmis-
sion),
one of the following options
may be used to connect the pump
pressure and return hoses to the test
tool (T56L-3361O-D and T68L-
33610-A):
a. Disconnect the pressure and re-
turn lines at the power steering pump
(Fig. 2). Obtain a power steering re-
turn hose from stock and connect the
end with the fitting to the output fit-
ting of the tool using the
5/8-18
SAE
female, 1/4 N.P. thread male fitting
provided. The end of the stock hose
(without the fitting) should be con-
nected to the return tube of the pump.
Connect the pressure hose from the
tool to the outlet fitting of the pump.
b.
Disconnect the pressure line at
the pump and connect the pressure
line from the test tool to the outlet fit-
ting of the pump. Disconnect the re-
turn line at the gear and connect it to
the output fitting of the tool, using the
5/8-18
SAE female, 1/4 N.P. thread
male fitting provided.
2.
After installing the lines by the
most advantageous method, proceed
as follows:
3.
Open the manual valves A and B
fully (Fig. 2).
CALIBRATED FLOW
DETERMINING ORIFICE
PRESSURE LINE
FIG. 2—Power Steering Pump Test Circuit Diagram
PRESSURE GAGE
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