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Home >> Land Rover >> 1995 >> Discovery I (LJ) V8-3.9L >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Distributor >> Distributor Plate W/ Pick-up Sensor >> Service and Repair
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Distributor Plate W/ Pick-up Sensor: Service and Repair

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:

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 center 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, loosen two barrel nuts to set the air gap.

NOTE:
- When original pick-up and base plate assembly has been refilled, 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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