Workshop Manuals Factory service & repair Land Rover
01 Range Rover Workshop Manual02 Range Rover Workshop Manual - Volume 103 04 05 06 01 - INTRODUCTION07 08 09 04 - GENERAL SPECIFICATION DATA10 11 12 05 - ENGINE TUNING DATA13 14 15 16 06 - TORQUE VALUES17 18 19 20 07 - GENERAL FITTING REMINDERS21 22 23 24 09 - LUBRICANTS, FLUIDS AND CAPACITIES25 26 27 28 29 10 - MAINTENANCE30 31 32 33 34 35 12 - ENGINE - BMW DIESEL36 37 38 39 12 - ENGINE - LAND ROVER V840 41 42 43 17 - EMISSION CONTROL44 45 46 47 19 - FUEL SYSTEM - BMW DIESEL48 49 50 19 - FUEL SYSTEM - LAND ROVER V851 52 53 54 19 - FUEL SYSTEM - CRUISE CONTROL55 56 57 58 26 - COOLING SYSTEM - BMW DIESEL59 60 61 62 26 - COOLING SYSTEM - LAND ROVER V863 64 65 66 30 - MANIFOLD AND EXHAUST SYSTEM67 68 69 70 33 - CLUTCH71 72 73 37 - MANUAL GEARBOX - R380 GEARBOX74 75 76 Range Rover Workshop Manual - Volume 277 78 79 80 41 - TRANSFER BOX81 82 83 84 85 86 87 44 - AUTOMATIC GEARBOX - ZF AUTO88 89 90 91 47 - PROPELLER SHAFTS92 93 94 51 - REAR AXLE AND FINAL DRIVE95 96 97 54 - FRONT AXLE AND FINAL DRIVE98 99 100 101 57 - STEERING102 103 104 105 60 - FRONT SUSPENSION - ELECTRONIC AIR SUSPENSION106 107 108 109 110 64 - REAR SUSPENSION - ELECTRONIC AIR SUSPENSION111 112 113 114 70 - BRAKES - ABS115 116 117 75 - SUPPLEMENTARY RESTRAINT SYSTEM118 119 120 121 122 123 76 - CHASSIS AND BODY124 125 126 127 128 129 77 - PANEL REPAIRS130 131 132 133 78 - SEATS134 135 136 137 80 - HEATING AND VENTILATION138 139 140 141 82 - AIR CONDITIONING142 143 144 145 84 - WIPERS AND WASHERS146 147 148 86 - ELECTRICAL149 150 151 152 153 154 87 - NAVIGATION SYSTEM155 156 157 158 159 88 - INSTRUMENTS
Land Rover Range Rover P38101 · 57 - STEERING
101 · Steering & suspension

POWER STEERING SYSTEM - TEST

Make
Land Rover
Model
Range Rover P38
Section
FAULT DIAGNOSIS › POWER STEERING SYSTEM - TEST
57 - STEERINGPOWER STEERING SYSTEM - TEST
background image

57

STEERING

NEW RANGE ROVER

6

FAULT DIAGNOSIS

POWER STEERING SYSTEM - TEST

Service repair no - 57.90.10/01

A

Steering box

B

Steering pump

C

Adaptor block LRT-57-031

D

Hose LRT-57-031

E

Test valve LRT-57-001

F

Pressure gauge LRT-57-005

G

Hose LRT-57-030

Test Equipment - Assembly

1. Remove nut securing existing high and low

pressure pipes to steering box A.

2. Remove both banjo bolts from steering box.

Collect sealing washers.

3. Release existing pipes beneath radiator to allow

manipulation at steering box.

4. Connect existing low pressure pipe to steering

box. Secure with banjo bolt.

5. Fit hose D to adaptor block C. Fit assembly to

high pressure port of steering box. Secure with
banjo bolt.

6. Connect existing high pressure pipe to adaptor

block. Secure with banjo bolt.

NOTE: The high pressure pipe and hose D,
could be transposed depending on hand
of drive.

7. Fit hose G to adaptor block C.
8. Connect pressure gauge F to test valve E.

Connect hoses D and G to test valve E.

9. Ensure steering system is free from leaks.

Maintain maximum fluid level during test.

Test Procedure

NOTE: If power steering lacks assistance,
check pressure of hydraulic pump before
fitting new components. Use fault finding

chart to assist tracing faults.

1. A hydraulic pressure gauge and adaptor is used

to test the power steering system.

2. When testing the system, turn the steering wheel

gradually while reading the pressure gauge.

3. With the test valve open start the engine.
4. With the engine at 1500 rev/min, turn the

steering wheel. Hold on full lock.

5. Repeat pressure check in opposite lock.
6. The test pressure should be between

35 and 75 bar (507 and 1090 lbf/in

2

), depending

on the road surface. Pressure will drop back to
between 32 and 48 bar (464 and 696 lbf/in

2

),

when held in full lock.

7. With the engine idling, release the steering

wheel. Pressure should read below 7 bar
(102 lbf/in

2

).

8. Pressures outside the above tolerances indicate

a fault.

9. To determine if the fault is in the steering box or

steering pump. Close the test valve, for a
maximum of five seconds.

CAUTION: Pump damage will occur if test
valve is closed for longer periods.

10. If the gauge does not register between 100 and

110 bar (1450 and 1595 lnf/in

2

) (maximum pump

pressure), the pump is faulty.

11. If maximum pump pressure is correct, suspect

the steering box.

12. On completion, remove the test equipment and,

using new sealing washers, connect pipes to
pump with banjo bolts.

M16 bolts: Tighten to

50 Nm (37 lbf.ft).

M14 bolts: Tighten to

30 Nm (22 lbf.ft).

13. Check fluid level.

See LUBRICANTS, FLUIDS

AND CAPACITIES, Information.

14. Bleed power steering system.

See Repair.

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