Land Rover Defender V8i Workshop Supplement Rover Manual

							86 - ELECTRICAL
CONTENTS
Page
REPAIR
ELECTRICAL PRECAUTIONS 1............................................................................
GENERAL PRECAUTIONS 1.................................................................................
CENTRE HIGH MOUNTED STOP LAMP 2............................................................
RADIO SPEAKER - REAR 2...................................................................................
ALTERNATOR 3.....................................................................................................
AUXILIARY DRIVE BELT 4.....................................................................................
DRIVE BELT TENSIONER 4..................................................................................
STARTER MOTOR 5..............................................................................................
RADIO6 .................................................................................................................. 
						

							ELECTRICAL
1
REPAIR ELECTRICAL PRECAUTIONS
The following guidelines are intended to ensure the
safety of the operator whilst preventing damage to
electrical and electronic components fitted to the
vehicle.
Polarity
Never reverse connect the vehicle battery and always
observe the correct polarity when connecting test
equipment.
High voltage circuits
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.
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 these items are dry and oil free
before disconnecting and connecting test equipment.
Never force 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.
Remove 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 15 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 electrical surge
caused by disconnecting live connections can
damage electronic components.
Ensure hands and work surfaces are clean and free 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 disc - hold by the 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 electronic
components are vulnerable to static electricity. 
						

							86ELECTRICAL
2
REPAIR CENTRE HIGH MOUNTED STOP LAMP
Service repair no - 86.41.32
Remove
1.Remove 2 screws and remove stop lamp cover.
2.Disconnect Lucars from bulb holder.
3.Unscrew 2 nuts and remove lamp unit from fixing
studs and rubber gasket.
4.Remove gasket.
Refit
5.Position gasket and stop lamp. Secure with two
nuts.
6.Connect Lukars to bulb holder.
7.Position cover and secure with screws.RADIO SPEAKER - REAR
Service repair no - 86.50.12
Remove
1.Raise rear seat cushion and fit stowage strap.
2.Carefully prise grille from speaker .
3.Remove 3 screws and withdraw speaker from
trim panel.
4.Disconnect two Lucars and remove speaker.
Refit
5.Connect Lucars, position speaker and secure
with screws.
6.Position grille and press firmly to secure. 
						

							ELECTRICAL
3
REPAIR ALTERNATOR
Service repair no - 86.10.02
Remove
1.Disconnect battery negative lead.
2.Remove drive belt.
See Auxiliary drive belt
3.Remove cover from rear of alterator.
4.Disconnect Lucar from rear of alterator and
collect cover.
5.Remove 2 nuts securing leads to rear of
alterator.
6.Disconnect leads from rear of alterator.
7.Remove 2 bolts securing generator to mounting
bracket and collect nuts.
8.Remove alterator.Refit
9.Fit alterator to mounting bracket.
10.Fit bolts and tighten nuts securing alterator to
mounting bracket.
11.Connect leads to rear of alterator and secure
with nuts.
12.Feed lucar through aperture in rear cover and
connect to alterator.
13.Fit cover to rear of alterator.
14.Fit drive belt.
See Auxiliary drive belt; Refit
15.Reconnect battery negative lead. 
						

							86ELECTRICAL
4
REPAIR AUXILIARY DRIVE BELT
Service repair no - 86.10.03
Remove
1.Remove viscous coupling.
See COOLING
SYSTEM, Repair, viscous coupling
2.Release drive belt tension by turning tensioner
clockwise.
3.With tension released, remove belt from
alternator pulley.
4.Remove drive belt.
NOTE: If belt is to be refitted, mark
direction of rotation.
Refit
5.Clean drive belt pulley grooves and inspect for
damage.
6.Fit belt to pulleys.
7.Turn drive belt tensioner clockwise and fit belt to
alternator pulley.
8.Release drive belt tensioner.
9.Fit viscous coupling.
See COOLING SYSTEM,
Repair, viscous coupling; Refit
DRIVE BELT TENSIONER
Service repair no - 86.10.09
Remove
1.Remove drive belt.
See Auxiliary drive Belt
2.Loosen tensioner centre bolt.
3.Remove bolt and tensioner.
Refit
4.Fit tensioner and bolt, tighten bolt to
50 Nm (39
lbf.ft.)
5.Fit drive belt.See Auxiliary drive belt; Refit 
						

							ELECTRICAL
5
REPAIR STARTER MOTOR
Service repair no - 86.60.01
1.Position vehicle on ramp.
2.Disconnect battery negative lead.
3.Remove RH front heated oxygen sensor.
See
FUEL SYSTEM, Repair, heated oxygen
sensor (H02s)
4.Remove front bolt and loosen rear bolt securing
catalyst heat shield. Lower front edge of heat
shield.
5.Remove bolt securing starter motor heat shield
to RH engine mounting bracket.
6.Release heat shield clip from starter motor
solenoid and move aside for access.
7.Lower ramp.
8.Disconnect Lucar from solenoid.
9.Remove nut and disconnect feed wires from
solenoid.
10.Remove top bolt securing starter motor.
11.Raise ramp.
12.Remove bottom bolt securing starter motor.
13.Remove starter motor.Refit
14.Ensure mating faces are clean.
15.Locate starter motor and fit bottom bolt finger
tight.
16.Lower ramp.
17.Fit top bolt and tighten to
42 Nm (31 lbf.ft).
18.Connect feed wires to solenoid terminal and
secure with nut.
19.Connect Lucar to solenoid.
20.Raise ramp.
21.Tighten bottom starter motor bolt to
42 Nm (31
lbf.ft).
22.Manoeuvre heat shield into position and secure
clip to solenoid.
23.Align heat shield to RH engine mounting bracket
and fit retaining bolt.
24.Align catalyst heat shield and harness clip. Fit
and tighten front bolt. Tighten rear bolt.
25.Fit heated oxygen sensor.
See FUEL SYSTEM,
Repair, heated oxygen sensor (H02s); Refit
26.Reconnect battery negative lead. 
						

							86ELECTRICAL
6
REPAIR RADIO
Service repair no - 86.50.03
Remove
1.Using toolSMD 4091release radio from cage.
2.Disconnect coaxial cable from radio.
3.Disconnect 2 multiplugs from radio.
4.Remove radio from fascia.
Refit
5.Position radio to fascia and connect multiplugs.
6.Connect coaxial cable to radio.
7.Secure radio in cage. 
						

							88 - INSTRUMENTS
CONTENTS
Page
REPAIR
INSTRUMENT PANEL 1.........................................................................................
SPEEDOMETER 1..................................................................................................
TACHOMETER 2....................................................................................................
FUEL AND TEMPERATURE GAUGES 3...............................................................