Range Rover Classic. Manual — part 191
86
ELECTRICAL
52
REPAIR
COOLANT TEMPERATURE AND FUEL GAUGES
Service repair no - 88.25.14 - Coolant temperature
gauge
Service repair no - 88.25.26 - Fuel gauge
Remove
1. Remove instrument cowl.
See Instrument
Cowl and Illumination Board
2. Remove speedometer trip reset button sleeve.
3. Remove instrument face plate.
Coolant temperature gauge
4. Remove circuit board.
See Circuit Board
5. Remove 3 screws securing coolant temperature
gauge to binnacle, remove gauge.
Fuel gauge
6. Remove 3 screws securing fuel gauge to
binnacle, remove gauge.
Refit
7. Reverse removal procedure.
SPEEDOMETER TRANSDUCER
Service repair no - 88.30.14
Remove
1. Position vehicle on ramp and chock wheels.
2. Raise ramp.
3. Disconnect multiplug from transducer.
4. Remove bolt securing transducer, remove
transducer.
Refit
5. Reverse removal procedure.
ELECTRICAL
53
REPAIR
ALARM ECU
Service repair no - 86.77.01
Remove
1. Remove lower dash panel,
See CHASSIS AND
BODY, Repair, lower dash panel
2. Remove multiplugs and aerial lead from ECU.
3. Remove relays and bases from bracket.
4. Remove ECU bracket fixings.
5. Remove ECU with bracket.
Refit
6. Reverse removal procedure. Aerial and
multiplugs must be fitted securely to ensure
alarm functions correctly.
ELECTRICAL
1
OVERHAUL
DISTRIBUTOR-LUCAS 35DLM8
Overhaul
DISTRIBUTOR CAP
Service repair no - 86.35.10
1. Unclip and remove cap
2. Fit a new cap if faulty.
3. Clean cap and HT brush with a lint free cloth.
ROTOR ARM
Service repair no - 86.35.16
1. Pull rotor arm from shaft.
2. Fit a new rotor arm if faulty.
INSULATION COVER (FLASH SHIELD)
Service repair no - 86.35.40
1. Remove cover secured by three screws.
2. Fit a new cover if faulty.
VACUUM UNIT
Service repair no - 86.35.21
1. Remove two screws from vacuum unit securing
bracket. Disengage vacuum unit connecting rod
from pick-up base plate connecting peg.
Withdraw vacuum unit from distributor body.
AMPLIFIER MODULE
Service repair no - 86.35.30
1. Remove two screws and withdraw module.
2. Remove gasket.
3. Remove two screws and cast heatsink.
WARNING: Amplifier module is a sealed
unit containing Beryllia. This substance is
extremely dangerous if handled. DO NOT
attempt to open or crush module.
PICK-UP AND BASE PLATE ASSEMBLY
Service repair no - 86.35.42
1. Use circlip pliers to remove circlip retaining
reluctor on rotor shaft.
2. Remove flat washer, and ’O’ ring recessed in top
of reluctor.
3. Gently withdraw reluctor from shaft, taking care
not to damage teeth.
NOTE: Coupling ring fitted beneath
reluctor.
4. Remove three support pillars and cable
grommet. Lift out pick-up and base plate
assembly.
NOTE: Do not disturb two barrel nuts
securing pick-up module, otherwise air
gap will need re-adjustment.
5. Fit a new pick-up and base plate assembly if
module is known to be faulty, otherwise check
pick-up winding resistance (2k-5k ohm).
Reassemble
6. This is mainly a reversal of dismantling
procedure, noting following points:
86
ELECTRICAL
2
OVERHAUL
LUBRICATION
Apply clean engine oil:
a.
A spot into rotor spindle before fitting rotor
arm.
Apply Omnilube 2 (or equivalent) grease.
b.
Auto advance mechanism.
c.
Pick-up plate centre bearing.
d.
Pre tilt spring and its rubbing area (pick-up
and base plate assembly).
e.
Vacuum unit connecting peg (pick-up and
base plate assembly).
f.
Connecting peg hole in vacuum unit
connecting rod.
Fitting pick-up and base plate assembly
1. Pick-up leads must be prevented from fouling
rotating reluctor. Both leads should be located in
plastic guide as illustrated. Check during
re-assembly.
Fitting reluctor
2. Slide reluctor as far as it will go on rotor shaft,
rotate reluctor until it engages with coupling ring
beneath pick-up base plate. Distributor shaft,
coupling ring and reluctor are ’keyed’ and rotate
together. Fit ’O’ ring, flat washer and retaining
circlip.
Pick-up air gap adjustment
1. Air gap between pick-up limb and reluctor teeth
must be set within specified limits, using a
non-ferrous feeler gauge.
2. If adjustment is necessary, slacken two barrel
nuts to set the air gap.
See ENGINE TUNING
DATA, Information, Engine - 3.9 V8i
NOTE: When original pick-up and base
plate assembly has been refitted, air gap
should be checked, and adjusted if
necessary.
When fitting a new assembly air gap will require
adjusting to within specified limits.
Amplifier module
1. Before fitting module, apply MS4 Silicone grease
or equivalent heat-conducting compound to
amplifier module backplate, seating face on
distributor body and both faces of heatsink
casting.
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