Land Rover Defender 90 110 Workshop Book 5 Rover

							.::.::!,,, .. 25. Lift the evaporator  clear of the  vehicle  and place ,,).... ;.*. on a bench with a suitable support  underneath the 
case  to ensure  the heater  pipes are 
not damaged. 
26.  Release  the  nuts  and remove  the  bracket  from 
underneath the evaporator  casing. 
27. Remove  the wire  clip and detach the dump  valve 
located  underneath. 
28. Release  the  seven self tapping  screws securing  the 
outlet  duct and carefully  break  the sealing 
compound  around  the edge 
of the duct  and pull 
ducting plate  away from evaporator  body. 
29. Remove the  fifteen  screws located  around the 
cover seam,  Remove  the old  sealing  compound 
from  the body  and 
top cover. 
30.  Remove  the four  screws  and four nuts  from the top 
of the cover. 
31. From  the front of the unit  remove  the two  screws 
adjacent to 
the low pressure  pipe moulding. 
32.  At the  side 
of the unit remove  the two  screws . adjacent to the air intake  aperture. 
33.  Lift  the top  cover 
off whilst  feeding  the  blower 
motor  wiring  and air control  flap rod through their 
respective  apertures,  thus exposing  the blower 
motor,  heater matrix and  air  conditioning 
evaporator  matrix. 
.,I. . ..., . .. 
- ,. ... .. , .. .. 
Blower motor unit removal  only  Expansion 
valve removal 
43. Support  the  suction  pipe union with suitable 
spanners  and release. 
44.  Remove  the bleed  pipe  retaining  nut  from the 
suction  pipe. 
45.  Remove 
the spring  clip retaining  the expansion 
valve  sensor  pipe 
to the main  suction  pipe  which 
now 
rcleases the expansion  valve and high  pressure 
pipe.  Place  valve 
on bench  and  unscrew the high 
pressure pipe  from the expansion valve. 
46. Seal  and  cap all apertures;  discard all ‘0’ rings 
which  are renewed 
on assembly. 
Refitting 
47.  Reverse  procedures  46 to 11 noting that all threads, 
unions, 
‘0’ rings  are coated  with rcfrigerant oil 
prior  to fitting. 
NOTE: Depending  upon which  unit has been 
refitted  reverse the appropriate  procedures: 
Heater  Matrix  or Blower  Motor 
5 to 3 
Evaporator  Matrix or Expansion Valve 10 to 6 and 
then  charge  the air conditioning  system as 
previously  described with Refrigerant 
12. 
RESISTOR BLOCK 
Removal 34. Remove  the screws rctaining the  motor  unit to thc 
casing. 
35. Release  the three  bracket  retaining  screws  and 
withdraw  motor and impeller. 
36.  Detach 
the star  washer,  spring clip and  impeller. 
37. Remove  the  two nuts from  the  motor  shroud  and 
lift  clear. 
1. Stop  the engine  and secure  the bonnet in an open 
2.  Detach  the blower  motor wiring connector. 
3.  Remove  the self  tapping  screw and 
lift the resistor 
position. 
block 
out. . ,. 
HeatedEvaporator matrices  removal only 
38. Lift  the support  ptate and insulation  pad from  the 
matrix. 
39. From  the  bottom of the casing,  remove  the  three 
screws  adjacent  to the  dump  valve outlet, 
in 
addition  to the  screws  next to the heater  pipes. 
40. Lift the evaporator  and heater  matrices  together 
with  the supporting  frame  containing the air 
direction flap clear  of the  casing. 
41.  Detach  the evaporator  matrix by releasing  the four 
screws,  two at both  ends 
of the support bracket. 
42. Detach  the heater  matrix  by removing the self- 
tapping  screw. 
Refitting 
4. Reverse  procedures 3 to 1. 
23  
						

							I82 I AIR CONDITIONING - R.H. STEERING 
EVAPORATOR BLOWER MOTOR - RH Steering 
models 
Rem 
o v  a 1 
1. Open  and secure  the bonnet. 
2. Release  the  plastic tie  retaining  the  carburetter 
breather  pipe 
to the right hand  air intake elbow. 
3. Remove  the  pulsair pipe connected  to the  air 
intake  elbow. 
4. Remove  the right  hand air intake  elbow. 
5. Disconnect the clip  and  blower  motor wiring. 
6. Release  the blower  motor cover fixings  and 
separate  the casing  slightly  to allow  the  earth  and 
Lucar  connectors  to be  released. 
7. Remove  the cover  ensuring that  a mark is made  on 
the  casing  to indicate  the correct  positioning 
of the 
blower  motor when refitting. 
8. Release  the  five self-tapping  screws and  withdraw 
the  blower  motor and impeller.  It may  be necessary 
to  move  the low  pressure  air  conditioning  pipe 
aside  to provide sufficient  clearance. 
9. Remove the  centre  nut on the  impeller  and 
carefully  ease the impeller  from the blower  motor 
shaft. 
Refitting  Evaporator 
remove and refit 
- R.H. steering  models 
For removal of the blower  motor only,  see  section 
“Evaporator  Blower Motor”. 
NOTE:  It is only required  to evacuate  the air 
conditioning  system when removing  the evaporator 
matrix  or changing  the expansion  valve. 
Rem 
o v a I 
1. Place  the  vehicle in a ventilated  area  away  from 
2. Stop the  engine  and  secure  the  bonnet in an open 
3. Disconnect  the battery. 
4. Unscrew  the radiator drain-plug  and partially  drain 
5. Remove the air-cleaner. 
6. Remove  the  caps  from  the compressor  service 
open 
flames  and heat sources. 
position. 
the radiator. 
valves. 
Heater  matrix only 
7. Fully  close  (turn clockwise)  the high  pressure 
8. Fully  open  (turn anti-clockwise) the lalw pressure 
9. Slowly  disconnect  the low  prcssurc  pipe from  the 
valve. 
valve. 
compressor  rotor lock adaptor  plate. 
10. Remove  the plastic ‘0’ ring  from  the  rotor lock 
seal.  Cap and seal  both  unions  to prevent  dirt  or 
moisture  entering the system. 
pipe  to the upper engine  bracket. 
12. Remove the two  plastic  ties, securing  the insulation 
cover 
on the  high  pressure  pipe  and  remove the 
cover. 
13. Whilst  supporting  both unions  with suitable 6., 
.. 11 11. Release the p:zstic :is ~~~~ifig the !CW P~~SSE~P 
10. Reverse  procedures 9 to 1 ensuring  that all seals  spanners, unscrew the high  pressure  air 
24 
are replaced.  conditioning 
pipe from  the evaporator.  
						

							AIR CONDITIONING - R.H. STEERING 
r- L%+ Evaporator matrix and expansion valve  only 
14. Evacuate  the air conditioning  system as previously 
described. 
15. Open  (turn anti-clockwise) the compressor  service 
valves  and  disconnect  the gauge  set. Cap 
all pipes 
and  gauge connections  to prevent  dirt  or moisture 
entering  the system. 
16.  Remove  the  insulating  cover 
on the low  pressure 
pipe. 
17. Whilst  supporting  both unions  with suitable 
spanners,  unscrew the low  pressure  air 
conditioning  pipe from  the evaporator. 
18. Cap both  ends  to prevent  dirt or moisture  entering 
the  system. 
19. Remove  the two plastic  ties, securing  the insulation 
cover  on the  high  pressure  pipe  and  remove  the 
cover. 
20.  Whilst  supporting  both unions  with suitable  ~ 
spanners, 
unscrew the high  pressure  air 
:.,c*-..:‘ 0 *It ,A.. 
1 It I‘ 
conditioning pipe  from the evaporator. 
82 
Evaporator unit 
21.  Remove  the self  tapping  screw securing  the air 
22.  Disconnect  the two ‘Ronco’ thermostat  wires. 
23.  Disconnect  the two  heater  hoses from 
the side of 
the  evaporator  unit. 
24.  Remove  the  vacuum  pipe from  the water  valve 
switch. 
25.  Remove  the clip  and  cable  connection  from the 
evaporator  air  flap  rod.  Use a new  clip 
on 
reassem bly. 
control 
flap solenoid. 
26.  Disconnect  the blower motor wiring  connections.  27. 
Remove 
the screw  retaining  the blower  motor 
wiring  tot 
he blower  motor housing. 
28.  Remove 
the two  bolts  securing the blower  motor 
resistor  block to the  engine compartment. 
29.  Remove  the bolt  securing  the front  support 
brackct 
to the blower motor housing. 
30.  From 
inside the vehicle  rcmove the  front passenger 
carpet  and five  self tapping  screws which retain the 
toe
-box cover. 
31.  Release  the  four  bottom mounting  bracket  bolts, 
ensuring  that 
the spacing washers  from the two 
innermost  bolts are retrieved  from the engine 
bulkhead  side. 
32.  From  inside  the engine  compartment  remove the 
two  13 
mm upper  evaporator  mounting bracket 
bolts  fitted 
to the engine bulkhead. 
33.  Lift 
the evaporator  clear  of the  vehicle  and place 
on a bench  with  the blower  motor cover facing  up. 
34.  Turn  the  evaporator  unit around  and  remove 
thc 
fixings retaining the blower motor  housing duct. 
35.  Remove 
the “Ranco”  thermostat  from the top of 
the unit. 
36.  Remove  the seven  self
-tapping  screws securing thc 
top and bottom halvcs of the  unit togethcr. 
37.  Remove the eight screws from  the  right hand  side 
of  the  unit. 
38.  Peel  back 
the sponge  pad  on the  outlet  duct to 
expose  the last  retaining screw. Remove  the 
screw. 
39. Remove  the two  screws on the top  of the unit. 
40.  Remove  the  joint  sealant  around 
the seam  and 
separate  the two  halves 
of the evaporator  cover 
assembly 
. 
41.  Remove  the heater  matrix  from thc evaporator 
casing. 
25  
						

							I82 I AIR CONDITIONING - R.H. STEERING 
Evaporator matrix and Expansion  valve only 
42. Release  the screws  attached  to the  blower  motor 
retaining plate  and remove  the plate. 
43.  Remove  the blower  motor inner housing. 
44.  Remove the  bleed
-pipe retaining nut from the low 
pressure  pipe. 
45.  Remove  the  spring clip retaining  the expansion 
valve  sensor  pipe  to  the  low pressure  pipe  and 
remove  the expansion  valve and high  pressure 
pipe. 
46.  Unscrew  the high  pressure pipe from  the expansion 
valve. 
47.  Seal  and cap all pipes  and connections  to prevent 
dirt  or moisture  entering  the  system. Discard  all 
‘0’ rings,  which  are renewed on refitting. 
48. Release the  two nuts adjacent to the dump  valve. 
49. Remove  the two  evaporator  mounting screws from 
each side 
of the  casing. 
50. Release  the two uppcr evaporator  mounting 
bracket  screws and 
pull the bracket  away from the 
evaporator. 
51.  Lift  the evaporator  matrix from the casing  with 
thc 
two side plates and place  on a bench. 
+ 
Refitting 
52.  Reverse  procedures 51 to 21, ensuring  that all 
threads,  unions  and 
‘0’ rings are  coated  with 
refrigerant 
oil prior  to  fitting. Discard  all  old ‘0’ 
rings and  renew on refitting.  When reversing 
procedure 
31, ensurc that  the spacing  washers  are 
fitted 
to the  two innermost  bolts. 
NOTE: Depending  upon which component has been 
removed,  reverse  the appropriate  procedure  as 
follows: 
Evaporator  matrix  and  expansion  valve 
20 to 2 
Heater matrix 13 to 2. 
26  
						

							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 
system,  all high  tension  terminals,  adaptors and 
diagnostic  equipment 
for testing should be inspected  to 
ensure  that they  are adequately  insulated and shielded 
to  prevent  accidental  personal contacts and minimize 
the  risk 
of shock.  Wearers of surgically  implanted 
pacemaker  devices should not be in close  proximity  to 
ignition  circuits or diagnostic  equipment. 
L 
Polarity 
Never rcversc connect the vehicle  battery  and  always 
observe 
the correct  polarity  when connecting  test 
equipment. 
High  voltage  circuits 
Whenever  disconnecting  live high  tension  circuits 
always  use  insulated pliers and 
never allow the open 
end  of a high  tension  lead 
to come into contact  with 
other  components  particularly  electronic  control units. 
Exercise  caution  when  measuring  the  voltage 
on the 
coil  terminals  while the engine  is running,  since, high 
voltage 
spikes can  occur  on these terminals. 
Connectors  and harness 
Always  ensure  that thesc items are  dry  and  oil free 
before  disconnecting  and connecting  test  equipment. 
Never 
forcc connectors apart either  by using  tools or by 
pulling 
on the  wiring  harness.  Always ensure locking 
tabs  are disengaged  before  removal and note 
orientation to  enable correct reconnection.  Ensure that 
any  protective  covers  and  substances  are replaced 
if 
disturbed.  Having confirmed  a component  to be  faulty 
switch
-off  the  ignition  and disconnect  the  battery. 
Rcmove the  component and support  the disconnected  harness. 
When replacing  the component  keep  oily 
hands  away from electrical  connection  areas and push 
connectors home  until any locking  tabs fully  engage. 
Battery  disconnecting , 
Before  disconnecting  the battery,  switch off all 
electrical  equipment. 
Battery charging 
Recharge  the  battery out of the vehicle  and keep  the 
top  well  ventilated. While being charged  or discharged, 
and  for  approximately  fifteen  minutes afterwards, 
batteries  emit  hydrogen 
gas which is flammable. 
Always  ensure any battery  charging  area is well 
ventilated  and  that every  precaution  is taken  to avoid 
naked  flames  and sparks. 
GENERAL  PRECAUTIONS 
Switch-off ignition prior  to making any connection or 
disconnection in the system as clcctrical  surge caused 
by  disconnecting 
‘live’ connections  can damage 
electronic  componcnts. 
Ensure  hands  and  work surfaces  are clcan  and 
frcc of 
grease,  swarf,  etc.  as  grease collects  dirt  which  can 
cause tracking 
or high-resistance  contacts. 
When  handling  printed circuit boards,  treat 
them as 
you  would  a 
hi-fi record - hold by thc edges only. 
Prior  to commencing 
a test,  and periodically  during a 
test, touch a good  earth,  for instance,  a  cigar lighter 
socket, 
to discharge  body static  as  some  clcctronic 
components are  vulnerable to static electricity. 
TEST  EQUIPMENT 
A  range  of ‘Fast  Check’  testers is available  to provide  a 
means  of fast  effective  diagnosis 
of faults in electronic 
systems  currently  fitted  to Land 
Rover and  Range 
Rover  vehicles. 
It  is essential  that operators  familiarise  themselves  with 
the component> of the  system to be checked  and the 
instruction for the  relevant  fast check  test before 
commencing  diagnosis.  
						

							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. Remove the capacitor. 
7. Remove the dwell-angle adjuster  screw and spring. 
8. Remove thc two screws  and withdraw  the vacuum 
unit  and rubber joint  washer. 
9. Remove the three  screws and  lift off the centrifugal 
advance  cover
-plate  with the  cover  plate earth 
lead. 
10.  Punch 
out the drive  pinion  roll-pin and  remove  the 
drive  pinion  and tab washer. 
. 
-,- 
INSPECTION 
11. Examine  the  parts  for wear  and  replace  as 
necessary.  Renew  the  capacitor  and  contact set. 
Examine  the  distributor  cap for cracks  and 
tracking.  Renew the cap 
if the electrodes  are worn 
and  burned. 
If the cap is serviceable  fit a new H.T. 
pick-up  brush  and spring.  Renew the rotor  arm if 
cracked and if the metal  contact  is burnt and  worn. 
Check 
the low  tension  lead  for  continuity  and 
rcnew if faulty. Check  the vacuum  unit diaphragm 
by  withdrawing 
the air and  placing a finger over the 
air pipe  to determine 
if the  vacuum  is being  held. 
Renew  the unit 
if unsatisfactory. 
ASSEMBLE 
When  assembling,  smear  the centrifugal  cover-plate 
and  vacuum  lever  with Chevron 
SR1 grease or 
equivalent. 
12.  Fit 
the tab  washer  and drive  pinion  and secure  with 
--. l? 
a new roll  pin. 
with  the three  screws  noting that one screw  is used 
to  retain  the centrifugal  advance cover plate earth 
lead. 
14.  Fit the  vacuum  unit and  rubber  joint  washer  and 
ensure  that the operating  lever 
is inserted between 
the two plates  which make up the  centrifugal cover 
plate  assembly. 
Fit the cefitrjfqz! a&..ncP, colJer-p!atP, 2nd Secure 
2 
15.  Fit  the dwell  angle  adjustment  screw and spring. 
16.  Fit the  capacitor. 
17. Fit the  contact  breaker  set ensuring  that  the small 
post  protruding  from  below the contact  set locates 
through  the hole  in the cover  plate into the  hole 
in 
the end of the  vacuum  unit actuating lever.  Secure 
with  the screw, plain  and spring  washers. 
18. Assemble  the contact  breaker  spring insulating 
bushes  and electrical  leads,  as  illustrated 
in thc 
following sequence: 
a)  lower  bush 
b) spring 
c) low  tension  lead 
d)  capacitor  lead 
e)  top  bush 
f)  and  secure  with the anchor  spring nut. 
cam  lubrication  pad. 
19. Apply a few  drops of engine  oil to the  distributor 
Sl 
e 
&-- a 
.il 
20. Using  a feeler  gauge, and  the dwell  angle adjuster, 
set  the  contact  breaker  points 
to a nominal 
clearance  of 
0,35 to 0,40 mm (0.014 to 0.016 in). 
Once the distribute: is fitted te the engine the 
dwell  angle  must  be adjusted  to 26 to 28 using 
special tuning  equipment. 
21.  Fit the  rotor  arm. 
22.  Fit  the  distributor  cap  ensuring  that  the 
H.T. c$ 
23. When  fitting the  distributor to the  engine  insert a 
pick
-up brush moves freely 
in its location. 
new 
0 ring seal  into the body groove.  
						

							.. . ... .. 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. Distributor drive dog .I 10. vacuum  unit actuating  iever 
ST1133M 
3  
						

							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 two  screws  retaining  the  condenser 
and  vacuum  unit  and remove  the condenser  lead 
from  the connector block. 
post. 
7. Remove  the retaining  clip  from  the eccentric ‘D’ 
8. Mark  the position of the serrated  cam in relation  to 
the  spring seat 
of the  vacuum  operating link. 
v ST1279M 
9. Disengage  the vacuum  operating  link and serratcd 
cam  from  the eccentric ‘D’ post  and  remove  the 
vacuum unit. 
10.  Remove 
the retaining  screw and withdraw  the fixed 
contact  plate. 
11. Remove the retaining  clip and  insulation  washer. 
12. Release the connector  block from the distributor 
body. 
13. Lift out the moving  contact complete  with 
connector  block and leads. 
14.  Mark  the relationship 
of the base  plate  to the  body 
and  remove the  retaining screw.  Whilst holding  the 
pressure  pad clear 
of the rotor,  withdraw the base 
plate. 
15. Remove  the moving  contact  post-plate. 
INSPECTION 
NOTE:  The distributor  drive dog 
is loosely  retained on 
the drive  shaft,  the ‘float’ allows for any  misalignment. 
17. Examine  all other components  for damage or 
excessive  wear and renew  where  necessary. 
18. Check the  distributor  cover for signs of tracking or 
cracks  and  check  that the pick-up  brush moves 
freely 
in its  holder. 
19.  Check  the rotor  arm 
for damage,  electrode 
security, burning and tracking. 
continued 
4  
						

							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. 
23. Smear a little grease on the post  and fit the moving 
contact post
-plate  to the base plate. 
24. Offer up the vacuum  unit to the  body  and fit the 
25 
I 
26. 
27. 
28. 
29. 
30. 
31. 
32. 
33. 
34. 
35. 
36. 
37.  operating 
link and  serrated  cam 
to the ‘D’ post. 
Ensure  that the identification  marks line up 
-see 
instruction 
8. Secure  the assembly  with  the spring 
clip. 
Secure the  vacuum  unit  and condenser  to the  body 
with  the remaining  screw and clip. 
Fit the  fixed  contact  and  loosely retain with the 
screw. 
Fit the  moving  contact ensuring that the  leaf spring 
locates 
in the nylon guide. 
Fit the connector  block to the body. 
Fit  the  insulation  washer  and retain assembly with 
the spring  clip. 
Fit condenser lead  to connector  block. 
Place  the felt pad 
in the top  of the  rotor  and  add  a 
few  drops  of 
oil. 
Smear a small quantity of grease on the rotor  cam. 
Adjust  the contact  point  gap  to a  datum  setting  of 
0,43 mm (0.017 in) with  a  feeler gauge  by turning 
the 
rotor spindle  until a cam fully  opens  the points. 
Move the  fixed contact  plate 
to obtain the required 
gap  and  tighten  the retaining screw. 
Fit  the  distributor  to the  engine. 
Fit  the  dust  cover. 
Fit  the  rotor  arm and distributor  cap. 
Connect 
the H.T. leads  to the  appropriate  spark 
plugs. 
Dismantling 
I. Remove  the rotor  arm. 
2. Extract the felt pad, if fitted, from the  cam. 
3. Removc  the two vacuum  unit retaining  screws, tilt 
.the unit to disengage  the  operating  arm and 
remove  the vacuum  unit. 
4. Push the low tension  lead  and  grommet  into the 
inside 
of the  body. 
5. Remove  the securing  screws and lift out the base 
plate  assembly. 
6.  Drive  out the  parallel 
pin retaining  the drive dog. 
7.  Remove the  drive dog and thrust  washer. 
8. Remove  the shaft  complete  with automatic 
advance  mechanism  and steel washer. 
9. Push  the moving  contact  spring inwards  and detach 
the  low  tension  connector  from the spring loop. 
10. Removc the  screw  to release  the  earth  lead and 
capacitor. 
11. Remove the sccuring screw  and lift off the contact 
set. 
Inspection 
12. Do not  dismantle  the advance  mechanism  beyond 
removing  the  control  springs.  If any  of the  moving 
parts 
or the  cam  are worn  or damagcd, renew  the 
complete shaft assembly. 
13.  Check  the 
fit of the  shaft  in its  bearing: if the 
bcaring allows cxcessive side  play,  renew  the 
completc distributor. 
14. Check  the base  plate  assembly; if the spring 
between  the plates 
is damaged or if the plates  do 
not  move  freely, renew  the assembly. 
15. Check  the  distributor  cap for signs of tracking or 
cracks  and check  that  the  pick-up brush  moves 
freely  in its  holder. 
16. Chcck the rotor arm for damage,  electrode 
security,  and burning 
or tracking. 
Keassem bling 
17. Reverse  the  procedure in 1 to 11, noting thc 
following  instructions. 
18. Lubricate the contact  pivot  post  with Retinax  ‘A’ 
or  equivalent  grease. 
19. Ensure  that  the steel washer  is fitted  on the  shaft 
and lubricate 
the shaft  with  Rocol  MP (Molypad). 
20. 
Fit the  thrust  washer  with  its  raised  pips  towards 
the  drive  dog. 
continued 
5  
						

							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 pin in the  drive 
dog by ring-punching 
the  holes. 
If the shaft  is new,  tap the  drive end to 
flatten  the washer  pips and ensure  the correct 
end
-float. 
25. 
Set the  contact  points gap. g- ? 21 
6