Land Rover Defender 90 110 Workshop 1984 Rover Manual

ELECTRICAL EQUIPMENT 
ELECTRICAL PRECAUTIONS 
86 
The following  guidelines  are intended  to ensure  the 
safety  of the  operator  whilst preventing  damage  to 
electrical  and any electronic  components  fitted to the 
vehicle. 
Before  commencing  any  test procedure 
on a vehicle 
ensure that the  test equipment  is working correctly  and 
any  harness 
or connectors  are in good condition,  this 
particularly  applies to mains  leads and plugs. 
WARNING:  Before commencing  work on an ignition...

ELECTRICAL EQUIPMENT- V8 ENGINE DISTRIBUTOR 
OVERHAUL V8 ENGINE DISTRIBUTOR 
DISMANTLE 
1. Unclip and remove  the distributor  cap. 
2. Withdraw the rotor arm. 
3. Remove  the contact  breaker  spring anchor nut  and 
lift off: 
a) the  top
-half of insulation  bush 
b) 
the low  tension  lead (Black) 
c)  the  capacitor  lead (Orange). 
4.  Remove the  contact breaker  retaining  screw, plain 
and  spring  washer  and  remove  contact  set 
assembly 
. 
5. Remove the complete  insulation  bush. 
6....

.. . ... .. I .. .... d , . .... .. I. ..... .. ,,,. ., .. ., . 
ELECTRICAL EQUIPMENT- V8 ENGINE DISTRIBUTOR 
L 
86 
5 
KEY TO DISTRIBUTOR COMPONENTS 
1. Distributor  cap 
2. Rotorarm 
3. Contact breakcr assembly 
4. Capacitor and retaining  screw 
5. Dwell-angle adjuster  screw and spring 
6. Vacuum  unit and retaining  screws 
7. Vacuum unit joint  washer 
8. Centrifugal  advance cover plate and retaining 
scrcws 
12. Thrust  washer 
13. Contact  breaker L.T. lead and grommet 
14. Distributor  cam 
15....

86 
OVERHAUL DUCELLIER  DISTRIBUTOR - four 
cylinder  engine 
DISMANTLE 
distributor. 
16. Examine  the advance mechanism  of the  cam,  check e 
the  shaft  for  excessive side play.  If any of these 
parts  arc  damaged 
or worn  renew  the complcte 
ELECTRICAL EQUIPMENT - FOUR CYLINDER DISTRIBUTOR 
1. Remove the distributor  from the engine. 
2. Remove the distributor cap. 
3. Remove  the rotor  arm. 
4.  Remove  the dust cover. 
5. Remove  the felt pad  from  the top  of the rotor. 
6. Remove  the...

ELECTRICAL EQUTPMENT- FOUR CYLINDER DTSTRIBUTOR 186 I 
REASSEMBLE  OVERHAUL 
LUCAS 45D4 DISTRIBUTOR - Four 
cylinder engine 20. Using Rctinax  ‘A’ or equivalent  grease  lubricate 
the  centrifugal  weight pivot  posts  and lightly  smear 
the  cam  pressure  pad and  contact  pivot post. 
21.  Fit the pressure  pad and spring to  the base  plate. 
22.  Fit the  base  plate  to the  body,  lining up the  marks, 
and  secure  with the retaining  screw and clip on the 
opposite  side 
to the vacuum  unit....

14 ELECTRICAL EQUIPMENT - FOUR CYLINDER DISTRIBUTOR 
ST1832M 
21. Fit the  drive  dog so that the driving  tongues  are 
parallel  with the rotor  arm electrode  and to the  left 
of its centre  line when  the rotor arm points 
upwards  as shown. 
ST 
22. If a new  shaft  is fitted  it must be drilled  through  the 
hole 
in the  drive  dog using  a 4.76 mm (A) drill. 
23. During  drilling,  push the shaft  from the cam end, 
pressing  the drive  dog and washer  against the body 
shank. 
24.  Secure  the...

ELECTRONIC IGNITION - V8 ENGINE 186 I 
ELECTRONIC  IGNITION - WITH 35DMS \.I I. .. e, ’ DISTRIBUTOR 
The Lucas model 35DM8 distributor  has a conventional 
advancehetard vacuum unit and centrifugal  automatic 
advance mechanism. 
A pick-up  module,  in conjunction  with a  rotating 
timing  reluctor  inside  the  distributor body, generates 
timing  signals.  These are applied 
to an electronic 
ignition  amplifier  unit  fitted under  the  ignition coil 
mounted 
on top of the  left  front  wing...

1861 ELECTRONIC IGNITION - V8 ENGINE 
DISTRIBUTOR - ELECTRONIC IGNITION - 
V8 ENGINES 35DM8 
Remove and refit 
Removing 
1. Disconnect  battery. 
2.  Disconnect  vacuum 
pipe(s). 
3. Remove  distributor  cap. 
4. Disconnect  low tension lead from  coil. 
5. Mark distributor  body in relation to centre  line of 
rotor arm. 
6. Add  alignment  marks to distributor  and  front 
cover. 
NOTE:  Marking  distributor  enables refitting  in 
exact  original  position,  but if engine 
is turned  while...

ELECTRONIC IGNITION - V8 ENGINE 186 I 
1. It is essential that the following  procedures  are 
adhcrcd  to.  Inaccurate  timing  can lead to 
scrious 
engine  damage  and additionally  create failurc to 
comply with the emission  regulations  applying to 
the  country  of destination.  If the  engine  is being 
checkcd in  the  vehicle  and is fitted  with an air 
conditioning  unit the compressor  must be isolated. 
2. On initial  engine  build, or if the distributor  has 
been  disturbed  for  any...

lzi ELECTRONIC IGNITION - FAULT DIAGNOSIS 
TEST 2: Test 2 
Amplifier Static Checks 
Switch  the ignition ‘ON’ 
(a)  Connect  voltmeter to points  in the circuit  indicated 
by  the  arrow heads and make  a note  of the  voltage 
readings. 
NOTE: Only  move  the voltmeter  positive lead during 
tests  2,3 and 
4. 
(b) Compare voltages obtained  with the specified 
EXPECTED  READINGS 
1 More than 11.5 volts 
2 1 volt max  below  volts at point 1 in test  circuit 
3 1 volt  max below volts  at point 1 in...