Download power steering

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STEERING
PL
DIAGNOSIS AND TESTING (Continued)
(2) Install Adapter Fitting, Special Tool 6844, on
Pressure Hose, Special Tool 6713. Install Adapter Fitting, Special Tool 6826, on Pressure Hose, Special
Tool 6959. Both Special Tool 6844 and 6826 can be
found in Adapter Set, Special Tool 6893 (Fig. 4).
Fig. 5 Hose At Pump
Fig. 4 Power Steering Analyzer Adapters 6893
(3) Unscrew the tube nut and disconnect the
power steering fluid pressure hose from the power
steering pump (Fig. 5).
(4) Connect Adapter Fitting, Special Tool 6844,
attached to pressure hose from inlet (gauge end) of
Power Steering Analyzer to the pressure fitting on
the power steering pump. Tighten the tube nut to a
torque of 34 N·m (25 ft. lbs.).
(5) Connect the vehicle’s power steering fluid pressure hose to Adapter Fitting, Special Tool 6826,
which should be already installed in the outlet hose
(valve end) of Power Steering Analyzer. Tighten the
tube nut to a torque of 34 N·m (25 ft. lbs.).
TEST PROCEDURE
(1) Completely open the valve on the Power Steering Analyzer flow meter.
(2) Start the engine and let idle long enough to circulate power steering fluid through the analyzer and
hoses, until the air is out of the fluid. Shut the off
engine.
(3) Check the power steering fluid level and add
fluid as necessary. Start the engine again and let
idle.
(4) The analyzer gauge should read below 862 kPa
(125 psi). If above, inspect the hoses for restrictions
and repair as necessary. The initial pressure should
be in the range of 345-552 kPa (50-80 psi). The flow
meter should read between 1.1 and 1.3 GPM.
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HOSE ROUTING CLIP
RETURN HOSE CLAMP
POWER STEERING PUMP AND RESERVOIR
PRESSURE HOSE TUBE NUT
CAUTION: The following test procedure step
involves testing maximum pump pressure output
and flow control valve operation. Do not leave valve
closed for more than five seconds as the pump
could be damaged.
NOTE: Power steering pump maximum relief pressure is 9308 to 9998 kPa (1350 to 1450 psi.).
(5) Close the flow meter valve fully three times
and record highest pressure indicated each time. All
three readings must be above specifications
and within 345 kPa (50 psi) of each other.
• If the power steering pump pressure’s are above
specifications, but not within 345 kPa (50 psi) of each
other, replace the power steering pump.
• If the pressure’s are within 345 kPa (50 psi) of
each other, but below specifications, replace the
power steering pump.
If the power steering pump requires replacement,
refer to the section POWER STEERING PUMP
within this group for the removal and installation
procedure.