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Land Rover 90 110 Workshop Rover Manual

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Page 551

ELECTRONIC IGNITION - FAULT DIAGNOSIS 186 
L 
.,. . ..- ., TEST5: TEST 7: i ::. . \..;;:::;*Y . ,, , ,. ,. . .... .. ..-. 
Check HT Sparking Visual 
and HT Cable Checks 
.. .;,7.. ; .. . ... .,. I. , .. .  . , , .. .. . .... . .. . 
Remove  existing coil/distributor HT lead and fit test 
HT  lead 
to coil  chimney.  Hold free end about 6 mm 
(0.25 in) from  the engine  block and crank  the engine. 
HT  sparking  good, repeat  test  with  original 
HT lead, if 
then  no  sparking, change HT lead. If...

Page 552

I86 I ELECTRONIC IGNITION - V8 ENGINE 
OVERHAUL DISTRIBUTOR - LUCAS 35DM8 
Distributor Cap 
1. Unclip and remove  cap. 
2. Renew cap if known to be  faulty. 
3. Clean  with a nap-free  cloth. 
Rotor  Arm 
4. Pull rotor  arm from  keyed  shaft. 
5. Renew  rotor arm if known  to be  faulty. 
Insulation Cover  (Flash shield) 
6. Remove cover, secured  by 3 screws. 
7. Renew cover if known to be  faulty. 
Vacuum  Unit 
8. Remove  2 screws  from vacuum  unit securing 
bracket, 
discngage vacuum  unit...

Page 553

ELECTRONIC IGNITION - V8 ENGINE I86 I 
,. * . ,. - Refitting Reluctor  ELECTRONIC  IGNITION - with Lucas 35DLMS 
Distributor * e.- 1 
16. Slide reluctor  as far as it will  go on  rotor shaft,  then 
rotate  reluctor  until 
it engages with the coupling 
ring  beneath  the pick  up base  plate. 
The distributor 
shaft,  coupling  ring  and  reluctor are keyed  and 
rotate together. 
Pick  Up Air  Gap  Adjustment 
17. The  air gap  between  the pick  up limb  and  reluctor 
teeth  must be set  within  the...

Page 554

ELECTRICAL 
NOTE: Marking  distributor  enables refitting  in 
exact  original  position,  but if engine  is turned  while 
distributor 
is removed,  complete ignition timing 
* procedure  must be followed. 
7. Release  the  distributor  clamp  and  remove the 
distributor. 
Refitting 
NOTE: 
If a  new  distributor is being  fitted,  mark body in 
same  relative  position 
as distributor  removed. 
8. Leads for distributor  cap should  be connected  as 
illustrated. 
Figures 
1 to 8 inclusive  indicate...

Page 555

ELECTRICAL 
AMPLIFIER  MODULE 
86 
9. Remove two screws  and withdraw  the module. 
10. Remove the gasket. 
11. Remove two  screws securing  the cast  heatsink  and 
remove  the heatsink. 
WARNING:  The amplifier  contains Beryllia. 
Do 
not open  or crush. 
PICK
-UP  AND  BASE  PLATE  ASSEMBLY 
12. Use circlip  pliers to  remove the  circlip retaining  the 
13. Remove  the flat  washer  and  then the ‘0’ ring 
14. Gently  withdraw  the reluctor  from the shaft,  taking 
reluctor 
on rotor shaft....

Page 556

ELECTRICAL 
1 
Y .% I .L- I Y Service Parts 
1. Cover 
2. HT brush & spring 
3. Rotor arm 
4. Insul cover 
5. Pick-up module and base platc asscmbly 
6. Vacuum unit 
7. Amplifier module 
8. 0-ring oil scal 
9 Gasket 
16 
W 
RRl866 E U  

Page 557

ELECTRICAL 1861 
r..z:.. ,... .._. . . . .,.. . . . .. .. ,, ,.... AMPLIFIER MODULE 
22. Before fitting the module,  apply MS4 Silicone 
grease or equivalent  heat - conducting  compound 
to  the  amplifier  module backplate,  the seating face 
on  distributor  body and both  faces 
of the heatsink 
casting. 
?U,. v.: I ., ..  ~ 
IGNITION TIMING 
Adjust 
1. It 
is essential  that thc following  procedures  are 
adhered  to. Inaccurate  timing  can  lead to serious 
engine  damage  and  additionally...

Page 558

186 I ELECTRICAL 
1 2 3 4 
L V d V 
TEST 2: 
SUSPECT 
Discharged  battery 
TEST 3: 
V V L V 
% V H 
L. T. Voltage 
Coil or amplifier 
Amplificrearth 
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. 
(b)  Compare 
voltages obtained  with the specified 
values  listed below: 
EXPECTED READINGS 
V1. More  than 11.5 volts 
V2. 
1 volt max below  volts at point  1 in test circuit 
V3. 
1 volt max...

Page 559

ELECTRICAL 186 I 
Coil H1 Sparking 
Remove existing coil/distributor HT lcad and fit test 
HT lead to coil  tower.  Using suitable  insulated  pliers, 
hold  free  end  about 
6 mm (0.25 in) from  the  engine 
block  and crank 
the engine. There should  be a good FIT 
spark. 
If weak or no sparking, fit new coil,  rcpeat test. 
HT sparking good, repeat  test with  original  HT lead. If 
sparking  is good,  carry out Test 6. 
If weak or no sparking, fit new  HT lead, if engine will 
not start carry  out...

Page 560

86 
ALTERNATOR OVERHAUL - Lucas A115-3 and 
A115-45 
ELECTRICAL EQUIPMENT- ALTERNATOR 
DISMANTLE 
1. Remove the alternator  from the engine. 
2. Remove  the  cover  retaining  screws and lift off the 
cover. 
Removing  the surge  protection  diode 
3. Withdraw  the screw  securing  the  diode to the slip 
4. Disconnect  the lead  from  the rectifier  assembly  and 
ring 
end bracket. 
remove 
the diode. 
Removing  the regulator (Note  arrangement  of the 
brush  box  connections) 
5. Disconnect  the...
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