POWER STEERING RETURN LINE
DESCRIPTION
Power steering return line is a hose which is
clamped at the pump and the gear.
OPERATION
Power steering return line, is used to transfer low
pressure power steering fluid, from the power steer-
ing gear to the power steering pump.
DIAGNOSIS AND TESTING
POWER FLOW AND PRESSURE
The following procedure is used to test the opera-
tion of the power steering system on the vehicle. This
test will provide the gallons per minute (GPM) or
flow rate of the power steering pump along with the
maximum relief pressure. Perform test any time a
power steering system problem is present. This test
will determine if the power steering pump or power
steering gear is not functioning properly. The follow-
ing pressure and flow test is performed using Power
Steering Analyzer Tool Kit 6815 (Fig. 2) and Adapter
Kit 6893.
FLOW AND PRESSURE TEST
(1) Check the power steering belt to ensure it is in
good condition and adjusted properly.
(2) Connect pressure gauge hose from the Power
Steering Analyzer to Tube 6865.
(3) Connect Adapter 6826 to Power Steering Ana-
lyzer test valve end.
(4) Disconnect high pressure hose at the pump.
Use a container for dripping fluid.
(5) Connect Tube 6865 to the pump hose fitting.
(6) Connect the power steering hose from the
steering gear to Adapter 6826.
(7) Open the test valve completely.
(8) Start engine and let idle long enough to circu-
late power steering fluid through flow/pressure test
gauge and to get air out of the fluid. Then shut off
engine.
(9) Check fluid level, add fluid as necessary. Start
engine again and let idle.
(10) Gauge should read below 862 kPa (125 psi), if
above, inspect the hoses for restrictions and repair as
necessary. The initial pressure reading should be in
the range of 345-552 kPa (50-80 psi).
(11) Increase the engine speed to 1500 RPM and
read the flow meter. The reading should be 2.4 - 2.8
GPM, if the reading is below this specification the
pump should be replaced.
CAUTION: The next step involves testing maximum
pump pressure output and flow control valve oper-
ation. Do not leave valve closed for more than three
seconds as the pump could be damaged.
(12) Close valve fully three times and record high-
est pressure indicated each time. All three read-
ings must be above specifications and within
345 kPa (50 psi) of each other.
•
Pressures above specifications but not within
345 kPa (50 psi) of each other, replace pump.
•
Pressures within 345 kPa (50 psi) of each other
but below specifications, replace pump.
(13) Open the test valve, turn steering wheel
extreme left and right positions against the stops.
Record the highest indicated pressure at each posi-
tion. Compare readings to specifications. If highest
output pressures are not the same against either
stop, the gear is leaking internally and must be
repaired.
CAUTION: Do
not
force
the
pump
to
operate
against the stops for more than 2 to 3 seconds at a
time because, pump damage will result.
Fig. 2 Power Steering Analyzer
1 – TUBE
2 – ADAPTER FITTINGS
3 – ANALYZER
4 – GAUGE HOSE
PUMP SPECIFICATIONS
ENGINE
RELIEF
PRESSURE
6
50
FLOW RATE (GPM)
2.5L
9653 kPa
(1400 psi)
1500 RPM 2.4 - 2.8
GPM
4.0L
9653 kPa
(1400 psi)
19 - 6
STEERING
XJ
DESCRIPTION AND OPERATION (Continued)
Summary of Contents for Cherokee 2000
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Page 96: ...Fig 105 Gear Tooth Contact Patterns 3 60 TUBE 181 AND 186 FBI AXLE XJ ADJUSTMENTS Continued...
Page 100: ...Installer D 144 Installer W 262 3 64 TUBE 181 AND 186 FBI AXLE XJ SPECIAL TOOLS Continued...
Page 134: ...Fig 79 Gear Tooth Contact Patterns 3 98 194 RBI AXLE XJ ADJUSTMENTS Continued...
Page 166: ...Fig 59 Gear Tooth Contact Patterns 3 130 8 1 4 REAR AXLE XJ ADJUSTMENTS Continued...
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Page 649: ...Fig 18 4 0L Engine XJ 8W 90 CONNECTOR LOCATIONS 8W 90 25 DESCRIPTION AND OPERATION Continued...
Page 662: ...Fig 31 Liftgate 8W 90 38 8W 90 CONNECTOR LOCATIONS XJ DESCRIPTION AND OPERATION Continued...
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Page 1396: ...WELD LOCATIONS UPPER COWL 23 68 BODY XJ SPECIFICATIONS Continued...
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Page 1405: ...FUEL FILLER OPENING XJ BODY 23 77 SPECIFICATIONS Continued...
Page 1406: ...CARGO AREA FLOOR PAN 23 78 BODY XJ SPECIFICATIONS Continued...
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Page 1415: ...REINFORCEMENT XJ BODY 23 87 SPECIFICATIONS Continued...
Page 1416: ...FRONT INNER FENDER 23 88 BODY XJ SPECIFICATIONS Continued...
Page 1417: ...FRONT INNER FENDER AND RADIATOR CLOSURE PANEL XJ BODY 23 89 SPECIFICATIONS Continued...
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Page 1445: ...FRONT INNER WHEELHOUSE XJ BODY 23 117 SPECIFICATIONS Continued...
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Page 1451: ...LIFTGATE OPENING XJ BODY 23 123 SPECIFICATIONS Continued...
Page 1452: ...STRUCTURAL ADHESIVE LOCATIONS LEFT QUARTER PANEL 23 124 BODY XJ SPECIFICATIONS Continued...
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