Land Rover Range Rover 1987 Power Steering Box Rover Manual

							:If the torque peak occurs before the centre
position, add to the shim washer value; if the
torque peak occurs after the centre position,
subtract from the shim washer value.
Shim washers are available as follows:
O.O3mm, O.O7mm, 0.12mm and 0.24mm (0.0015 in,
0.003 in, 0.005 in and 0.010 in).
NOTE: Adjustment of 
0.07mm (0.003 in) to the
shim value will move the torque peak area by 
l/4turn approximately on the shaft.
93.
94.
95.
96.Fit the drop arm to the steering box using a
new tab washer. Tighten the nut to the correct
torque (see section 
OC-Torque values)andbend over tab.
Refit the steering box to the vehicle.
Replenish the system with the correct grade of
fluid. Refer to Recommended Lubricants and
Power Steering System-bleed.
Test the system for leaks, with the engine
running, by holding the steering hard on full
lock in both directions.
NOTE: Do not maintain this pressure for
more than 30 seconds in any one minute to
avoid overheating the fluid and possibly
damaging the seals.
97.Road test the vehicle.
POWER STEERING SYSTEM
Bleed1. Fill the steering fluid reservoir to the
appropriate level marking on the dipstick with
one of the recommended fluids.
2. Start and run the engine until it attains normal
operating temperature.3. Check and correct the reservoir fluid level.
NOTE: During the carrying out of items 4, 
5and 6, ensure that the steering reservoir is
kept full. Do not increase the engine speed
or move the steering wheel.
4. Run the engine at idle speed, loosen the
bleed screw. When fluid seepage past the
bleed screw is observed, retighten the screw.
Ensure that the fluid level is in alignment with
the mark on the dipstick.
Wipe off all fluid lost during bleeding.
Check all hose connections, pump and
steering box for fluid leaks under pressure by
holding the steering hard on full lock in both
directions.
CAUTION: Do not maintain this pressure for
more than 30 seconds in any one minute, to
avoid causing the oil to overheat and
possible damage to the seals. The steering
should be smooth. lock-to-lock in both
directions, that is, no heavy or light spots
when changing direction when the vehicle
is stationary.
(-any out a short road test. If necessary,repeat the complete foregoing procedure.
11 
						

							POWER STEERING SYSTEM
Procedure.,. ITest1.
If there is a lack of power assistance for the
steering the pressure of the hydraulic pump should
be checked first before fitting new components to
the system. The fault diagnosis chart should also be
used to assist in tracing faults in the power steering
system.
2.SERVICE TOOLS
HY23-Pressure gauge
jD10-2 -Test adaptor
LSTlO-11 -Thread adaptor
3.
4.
9.
,. .Y.
L-J
A
‘14ERR10A. Steering box.
B. Steering pump.
C. Existing hose, steering box to pump.
D. Hose 
JDIO-3A.E. Test adaptor 
JDIO-2.F. Pressure gauge HY23.
G. Thread adaptor 
LSTIO-11.H. Thread adaptor 
LSTl O-l I.
.:,’ ‘,.,.;..’12RANGE
lg8’ ROVER
The hydraulic pressure gauge in conjunction
with the test adaptor is used for testing the
power steering system. This gauge is calibrated
to read up to 
140 kgflcm’ (2000 p.s.i.) and the
normal pressure which may be expected in the
power steering system is 77 kgflcm’ (1100
p.s.i.).Under certain fault conditions of the hydraulic
pump it is possible to obtain pressures up to
105 kgf/cm’ (1500 p.s.i.). Therefore, it is
important 
IO realise that the pressure upon the
gauge is in direct proportion to the pressure
being exerted upon the steering wheel. When
testing, apply pressure to the steering wheel
very gradually while carefully observing the
pressure gauge.
Check, and if necessary replenish, the fluid
reservoir.
Examine the power steering units and
connections for leaks. All leaks must be
rectified before attempting to test the system.
Check the steering pump drive belt for
condition and tension, rectify as 
necessar)‘.Assemble the test equipment and fit to the
vehicle, as shown in the diagram.
Open the tap in the adaptor.
Bleed the system but exercise extreme care
when carrying out this operation so as not to
overload the pressure gauge.
With the system in good condition, the
pressures should be as follows:
(a) Steering wheel held hard on full lock and
enginerunning at 1,000 rev/min, the
pressure should be 70 to 77 kgflcm’ (1000
to 1100 p.s.i.).
I’*(b) With the engine idling and the steering
iwheel held hard on full lock, the pressure
should be 
28 kgflcm’ (400 p.s.i.) minimum.
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							These checks should be carried out first on one
lock, then on the other.
CAUTION: Under no circumstances must the
steering wheel be held on full lock for more
than 30 seconds in any one minute, otherwise
there will be a tendency for the oil to overheat
and possible damage to the seals may result.
10.
11.
12.
13.Release the steering wheel and allow the
engine to idle. The pressure should be below
7 
kgf/cm’ (100 p.s.i.1.If the pressures recorded during the foregoing
tests are outside the specified range, or
pressure imbalance is recorded, a fault exist in
the system. To determine if the fault is in the
steering box or the pump, close the adaptor
tap for a period not exceeding five seconds.
If the gauge fails to register the specified
pressure, the pump is at fault and a new unit
must be fitted.
Repeat the foregoing test after fitting a new
pump and bleeding the system. If pump
delivery is satisfactory but low pressure or a
substantial imbalance exists, the fault must be
in the steering box valve and worm assembly.ADJUST POWER STEERING BOX
NOTE: The condition of adjustment which must
be checked is one of minimum backlash without
overtightness when the wheels are in the
straight-ahead position.
1. Jack up the front of the vehicle until the
wheels are clear of the ground and support
the chassis with axle stands.
WARNING: It is essential that the wheels are
chocked, the parking brake applied, and low
range selected with differential lock engaged.
2.
3.Gently rock the steering wheel about the
straight-ahead position to obtain the ‘feel’ of
the backlash present. This backlash must not
be more than 
9.5mm (0.375 in).
Continue the rocking action while an assistant
slowly tightens the steering box adjuster screw
after loosening the locknut until the steering
wheel movement is reduced to 
9.5mm (0.375
in) maximum.
4. Tighten the locknut,. then turn the steering
wheel from lock to lock and check that no
excessive tightness exists at any point.
5. Lower the vehicle to ground level and remove
the wheel chocks.
6. Road test the vehicle.
.: 
						

							.:)RANtiE.< :lg8’ ROVER“I .,:
. . . _
j:;:i.*POWER STEERING FLUID RESERVOIR
Remove and refit
Removing
1.
2.
3.
4.Place a drain tray beneath the power steering
box.
Prop open the hood.
Remove the reservoir filler cap.
Disconnect the return hose from the steering
box. Drain the fluid completely from the
reservoir, reconnect the hose.
CAUTION: Power steering fluid is harmful to
paintwork Should any fluid seep onto body,
.chassis, or any other components. immediately
wipe clean. 
It is most important that fluid
drained from the power steering system is not
re-used.
I5. Refit the return hose to the steering box.
6. Release the pinch bolt and remove the
reservoir from the bracket.
7. Release the hose clamps and remove the
flexible hoses, withdraw the reservoir from the
engine compartment.
NOTE: If the reservoir is not to be refitted
immediately, the hoses must be sealed to
prevent the ingress of foreign matter.
‘:,NOTE: The reservoir contains an integral filter
which is not serviceable, however, in normal use
the reservoir unit should last the life of the
vehicle.Should the power steering system
malfunction and under inspection it is found
that the steering fluid has been contaminated by
foreign matter a new FLUID RESERVOIR MUST be
fitted.
Refitting
8. Reconnect the flexible hoses to the reservoir.
Tighten the hose clamps securely.
9. 
Relit the reservoir to the bracket and tighten
the 
pinch bolt securely.
10. 
Ftll the reservoir to the prescribed level on the
~I~SIIC~ with one of the recommended fluids
(	s( tlon 09) and bleed the power steering
,L 	tlrn See Power Steering System-bleed.
11. 
t II Ihe reservoir filler cap.
12 C Io\e the hood.
. .. .*- :;3
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							POWER STEERING PUMP DRIVE BELTAdjust
Procedure
1.
2.
3.
4.
5.Prop open the hood and disconnect the
battery negative lead.Check, by thumb pressure, the belt tension
between the crankshaft and the pump pulley.
There should be a free movement of between
4 to 6mm (0.19 to 0.25 in).
Loosen the two nuts at the side of the pump
to allow the pump to be pivoted.
Loosen the bolt securing the pump lower
bracket to the slotted adjustment link.Pivot the pump (in the direction of the bold
arrow) as necessary and adjust until the correct
belt tension is obtained.CAUTION: Do not use the pump casing as a
point of leverage when tensioning the power
steering drive belt. Damage to the pump casing
may be caused leading to fluid leakage.
6. Maintaining the tension, tighten the pump
adjusting bolt and the top pivot nuts.
NOTE: Check the alternator drive belt
tension after adjusting the power steering
pump belt.
7. Reconnect the battery negative lead and close
the hood.
NOTE: Check adjustment after running
engine at fast idle speed for 3 to 5 minutes
if a new belt has been fitted.POWER STEERING PUMP DRIVE BELT
Remove and refit
Removing or preparing for the fitting of a new .
belt.
1.
2.
3.
4.
5.Prop open the hood and disconnect the
battery negative lead.Loosen the idler pulley bolt and remove the
fan belt.Loosen the alternator mountings and remove
the drive belt.
Loosen the power steering pump mountings.Pivot the pump and remove the drive belt.
Refitting
6. Locate the driving belt over the crankshaft and
pump pulleys.7. Adjust the position of the pump to give a
driving belt tension of 4 to 6mm (0.19 to 0.25
in) movement when checked by thumb
pressure midway between the crankshaft and
pump pulleys.CAUTION: Do not use the pump casing as a
point of leverage when- tensioning the power
steering drive belt. Damage to the pump casing
may be caused leading to fluid leakage.
8. Maintaining the tension, tighten the pump
adjusting bolt and the top pivot nut.
9. Refit the fan belt and 
ad/ust the tension to
give 4 to 6mm (0.19 to 0.25 in) movement
when checked by thumb pressure midway
between the crankshaft and water pump
pulleys.REVISED: MAY 89Continued
15 
						

							r-l57 STEERING1987 KANbtROVER
cI
10.
11.Refit the alternator drive belt and adjust to
give 4 to 6mm (0.19 to 0.25 in) movement
when checked midway between the power
steering pump and alternator pulleys.
Reconnect the battery negative lead and closethe hood.
NOTE: Check adjustment after running
engine at fast idle speed for 3 to 5 minutes
if a new belt has been fitted.
STEERING PUMP
NOTE: The power steering pump is not a
serviceable item. In the event of failure or
damage a new pump must be fitted.
Remove and refit
)iRemoving
1.
2.
3.
.,, .
4.
5.
6.
7.
8.
Disconnect the battery negative lead.
Loosenthe alternator pivot bolts and
adjustment link bolts, pivot the alternator
inwards and remove the drive belt.Loosen the water pump drive belt idler pulley
and remove the drive belt.Remove the left hand bank spark plug leads
and detach the distributor cap, place the leads
and cap to one side.Disconnect the electrical plug from the
distributor amplifier unit.Loosen the two nuts securing the power
steering pump pivot bracket.Release the three bolts securing the pulley to
the steering pump, do not remove them at
this stage.Release the bottom adjustment bolt below the
steering pump and pivot the pump inwards
towards the water pump to enable the drive
belt to be removed.
69. Remove the three bolts with plain washers
retaining the pulley to the pump and withdraw
the pulley.NOTE: Place a drain tray underneath the
vehicle to catch any power steering fluid
which will seep from the pump when the
fluid pipe is disconnected.
CAUTION: Power steering fluid is harmful to
paintwork. Should any fluid seep onto the body,
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							ro;;; 1987
STEERING 57
11.
12.Remove the three bolts securing the pump to
the pivot bracket, maneuver the pump out of
the bracket and withdraw it from the engine
compartment asfar as the remaining
connected fluid hose will permit.
Release the clamp securing the hose to the
Pump,remove the hose and plug both
openings to prevent ingress of dirt.
Refitting
13. Remove the plug from the fluid hose and
secure the hose to a NEW pump. Tighten the
hose clamp securely.
14. Maneuver the pump into the pivot bracket and
secure in position with the three retaining
bolts. Tighten the bolts to the specified torque
(see section 
06-Torque values).
15. Remove the plugs from the fluid pipe and
steering pump openings and fit the pipe.
Tighten the pipe securely.
CAUTION: Care should be taken to ensure that
the high pressure fluid pipe is well clear of both
the drive belt and the top of the power steering
box.
16.
17.
18.Fit the pulley to the steering pump drive
flange, coat the three bolts with Loctite and fit
to the steering pump, do not-fully tighten the
bolts at this stage.
Refit the crankshaft to steering pump drive
belt, pivot the steering pump outwards to
tension the belt, tighten the pivot bolts
securely. Check that the belt deflects
approximately 4 to 6 mm (0.19 to 
0.25in)when checked by thumb pressure midway
between the crankshaft and pump pulleys.
Tightenthe three steering pump pulley
retaining bolts to the specified torque 
(seesection 
06-Torque values).
Reverse the remaining removal instructions.
Bleed the power steering system.
Test the power steering system for leaks with
the engine running, holding the steering on
full lock in both directions.
CAUTION: Do not maintain this pressure for
more than 30 seconds in any one minute, to
avoid causing the oil to overheat and possible
damage to the seals.
22. Close the hood.
23. Road test the vehicle. 
						

							1987 KANbtROVER
POWER STEERING
FAULT DIAGNOSIS
SYMPTOM
CAUSETEST ACTIONCUREINSUFFICIENT POWER(I) Lack of fluidCheck hydraulic fluidIf low, fill and bleed the
GSISTANCE WHENtank levelsystem
PARKING(2) Driving beltCheck belt tensionAdjust the driving belt
(3) Defective hydraulic
pump(a) Fit pressure guage
of pressure is outside
between highlimits (high or low) after
pressure hose andchecking items 
I and 2,
steering pump withsee Note 
2steering held hard on
full lock, see Note 1
and ‘Power Steering
System Test’
(b) Release steering
wheel and allow
engine to idle. See
‘Power Steering
System Test’If pressure is greater,
check box for freedom
and self- centering action
POOR HANDLING
WHEN VEHICLE IS IN
MOTIONLack of castor actionThis is caused by
It is most important that
(wheels will not return toover-tightening thethis screw is correctly
centre)rocker shaft backlashadjusted. See
adjusting screw on topinstructions governing
of the steering boxadjustment
HYDRAULIC FLUID
LEAKSDamaged pipework,Check by visualTighten or renew asloose connecting unionsinspection; leaks fromnecessary
etc.the high pressure Irnesare best found while
holding the steering on
full lock with engine
running at fast idle speed
(See Note 1)
NOTE: Leaks from the steering box tend to showCheck 
‘0’ rings onRenew as necessary
up under low pressure conditions, that is, engine
pipeworkidling and no pressure on steering wheel
Continued
18 
						

							STEERING 57rl
SYMPTOM
CAUSETEST ACTIONCURE
EXCESSIVE NOISE
(1) If the high pressureCheck the loose runs ofAlter hose route or
hose is allowed tothe hosesinsulate as necessary
come into contact
with the body shell,
or any component
not insulated by the
body mounting,
noise will be
transmitted to the
car interior
(2) Noise from hydraulicCheck oil level and bleed If no cure, change
pumpsystemhydraulic pump
Note 
I. Never hold the steering wheel on full lock for more than 30 seconds in any one minute, to avoid
causing the oil to overheat and possible damage to the seals.
Note 2. High pressure-
Low pressure-
In general it may be assumed that excessive pressure is due to a fault in the
hydraulic pump.
Insufficient pressure may be caused by one of the following:
1. Low fluid level in reservoir
) Most usual cause of
2. Pump belt slip
) insufficient pressure
3. Leaks in the power steering system
4. Hydraulic pump not delivering correct pressure
5. Fault in steering box valve and worm assembly
6. Leak at piston sealing in steering box
7. Worn components in either steering box or hydraulic pump
Steering pump
Make/type.........................................................................Hobourn-Eaton series 200
Operating pressure 
- straight ahead position - at idle......
7 kgf/cm’ (100 p.s.i.1 maximum
Fulllock (left or right) at idle............................................28 
kgf/cm’ (400 p.s.i.) minimum
Full lock (left or right) 1000 
rev/min.................................70-77 kgflcm’ (1000-1100 p.s.i.)
.i
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							,987 KANCitROVER
COUPLING SHAFT AND UNIVERSAL JOINTS
Remove and refit
CAUTION: PRIOR TO REMOVING ANY OF THE
COMPONENTSINCORPORATED IN
THESTEERING LINKAGE, IT IS IMPERATIVE THAT THE
ROAD WHEELS ARE IN A STRAIGHT AHEAD
POSITION AND THAT THE STEERING WHEEL IS
THEN REMOVED TO PREVENT THE CRUISE
CONTROL SPIRAL CASSETTE BEING WOUND UP
OR DAMAGED IF THE STEERING LINKAGE IS
INADVERTENTLY MOVED OR ROTATED.
AFTERREFITTINGSTEERINGLINKAGE
COMPONENTS, THE ROAD WHEELS MUST BE
RE-POSITIONED STRAIGHT AHEAD
BEFORE
Fll-FlNC THE STEERING WHEEL, DO NOT
RECONNECT THE MULTI-PLUG TO THE CASSETTE
OR FIT THE TRIM PAD AT THIS STAGE. IF, AFTER
THE VEHICLE HAS BEEN DRIVEN, IT IS FOUND
THATTHE
STEERINGWHEELREQUIRESRE-POSITIONING,
REMOVETHE
WHEEL.RE-ALIGN THE DRIVE PEGS ON THE CRUISE
CONTROL CASSETTE BY SLIGHTLY ROTATING
THE UPPER PART OF THE CASSETTE IN THE
APPROPRIATE DIRECTION UNTIL THE PEGS LIE
HORIZONTAL TO THE STEERING COLUMN.
FIT THE STEERING WHEEL ENSURING THAT THE
DRIVE PEGS LOCATE IN THEIR RESPECTIVE
HOLES ON THE REAR OF THE STEERING WHEEL.
AFFER FINAL ALIGNMENT RE-CONNECI-MULTI-PLUG TO THE CASSETTE, TIGHTEN
STEERING WHEEL SECURING NUT AND FIT
‘TRIM PAD.
RemovingTHE
THE
THE1. Ensure the road wheels are in the straight
ahead position.
NOTE: To gain access to the coupling shaft
it is necessary to remove the air flow sensor
and air filter canister.
2. Remove one pinch bolt from the top universal
joint to the steering column.
3. Remove two pinch bolts from the lower
universal joint.
4. Maneuver the coupling shaft top universal
joint up the steering column splines to release
the lower joint from the steering box splines.
Withdraw the shaft from the steering column
splines.
5. Withdraw the lower universal joint from the
coupling shaft.
20NOTE: Do not dismantle the upper coupling
joint. The steering shaft, rubber coupling
and top universal joint is only available as
an assembly.6. Inspect both universal joints for wear and
excessive play, fit new joints if necessary.
7. Inspect the rubber coupling for condition 
-rubber deterioration, fit a new rubber coupling
assembly if necessary.
Refitting
NOTE: When refitting the universal joints to
their respective components ensure that the
pinch bolt holes line up with their
respective grooves.
8. Position the lower universal joint on the shaft.
9. Position the shaft assembly toward the end of
the steering column, maneuver the assembly
up the steering column splines until it is
possible to locate the lower universal joint
onto the steering box splines.
,;0. Locate the bolt holes in the universal joints
with their respective grooves in the steering
column,coupling shaft and steering box
splines.
I 1. Fit the pinch bolts, and tighten to the correct
torque (see section 06-Torque values).
_. I..
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