Land Rover Defender Workshop Rover Manual

AIRCONDITIONING
1
ADJUSTMENT
GENERAL
PRECAUTIONS
The refrigerant usedinthe airconditioning systemis
HFC (Hydrofluorocarbon) R134a.
WARNING:R134aisahazardous liquid
and when handled incorrectly cancause
serious injury.Suitable protective clothing
must beworn when carrying outservicing
operations onthe airconditioning system.
WARNING:R134aisodourless and
colourless. Donot handle ordischarge in
an enclosed area,orinany area where the
vapour orliquid cancome incontact withnaked
flame orhot metal. R134a isnot...

82AIR
CONDITIONING
2 ADJUSTMENT
SERVICING
PRECAUTIONS
Care mustbetaken whenhandling refrigeration
system components. Unitsmustnotbelifted bytheir
hoses, pipesorcapillary lines.Hoses andlines must
not besubjected toany twist orstress. Ensure that
hoses arepositioned intheir correct runbefore fully
tightening thecouplings, andensure thatallclips and
supports areused. Torque wrenches ofthe correct
type must beused when tightening refrigerant
connections tothe stated value.Anadditional spanner
must beused...

AIRCONDITIONING
3
ADJUSTMENT
REFRIGERANT
RECOVERY,RECYCLING,
RECHARGING
WARNING: Theairconditioning systemis
charged withahigh pressure, potentially
toxic refrigerant. Repairsorservicing must
only becarried outbyanoperator familiarwith
both thevehicle system andthecharging and
testing equipment.
All operations mustbecarried outina
well-ventilated areaaway fromopen flame and
heat sources.
Always wearsafety goggles andgloves when
opening refrigerant connections.
WARNING: Weareyeand hand safety
protection....

82AIR
CONDITIONING
4 ADJUSTMENT
5.
Operate therefrigerant recharging system
according tothe manufactures instructions.
Refrigerant tocharge system is1.1 kg.
6. Ifthe fullcharge hasnotbeen accepted bythe
system, starttheengine andrunitat 1500
rev/min foraminimum of2minutes.
Switch onthe airconditioning system,openthe
vehicle windows, setthe temperature controlto
cold andswitch theblower tomaximum speed.
7. Consult Refrigerant StationManual forcorrect
procedure tocomplete thecharge.
8. Carry...

AIRCONDITIONING
5
ADJUSTMENT
AIR
CONDITIONING SYSTEM-PERFORMANCE
TEST
WARNING: R134aishazardousSee
Repair, General Precautions
Carryoutthis test with bonnet anddoors orwindows
open, airconditioning switchedon,temperature
control settocold andblower atmaximum speed.Set
the airsupply control tosupply freshair.
1. Close lowpressure valveonrefrigerant station.
2. Close highpressure valveonrefrigerant station.
3. Connect aRefrigerant Stationtothe high and
low pressure servicing connections. 4.
Insert drybulb...

82AIR
CONDITIONING
6 ADJUSTMENT
SYSTEM
TEST
1. Place thevehicle inaventilated, shadedarea
free from excessive draught,withthedoors and
windows open.
2. Check thatthesurface ofthe condenser isnot
restricted withdirt,leaves, flies,etc.Donot
neglect tocheck thesurface between the
condenser andtheradiator. Cleanasnecessary.
3. Switch onthe ignition andtheairconditioner air
flow control. Checkthattheblower isoperating
efficiently atlow, medium andhigh speeds.
Switch offthe blower andtheignition.
4. Check...

AIRCONDITIONING
7
ADJUSTMENT
11.
Allprecautions mustbetaken toprevent
damage tofittings andconnections. Slight
damage couldcause aleak withthehigh
pressures usedinthe system.
12. Always usetwowrenches ofthe correct size,
one oneach fitting when releasing and
tightening refrigeration unions.
13. Joints andOrings should becoated with
refrigeration oiltoaid correct seating. Fittings
which arenotlubricated withrefrigerant oilare
almost certain toleak.
14. Alllines must befree ofkinks. Theefficiency of
the...

AIRCONDITIONING
1
REPAIR
COMPRESSOR Service
repairno-82.10.20
Remove 1. Disconnect battery.
2. Recover refrigerant fromairconditioning system
SeeAdjustment, Refrigerantrecovery,
recycling, recharging.
3.Remove compressor drivebelt.See
Compressor drivebelt
4.Disconnect highpressure pipefrom compressor.
5. Disconnect lowpressure pipefrom compressor.
6. Remove Oring from each flange.
7. Disconnect compressor clutchharness
multi-plug.
8. Remove compressor frommounting bracket
studs. Refit
9. Ifa new...

82AIR
CONDITIONING
2 REPAIR
COMPRESSOR
DRIVEBELT
Service repairno-82.10.02
Remove 1. Disconnect battery.
2. Remove auxiliarydrivebelt
SeeELECTRICAL,
Repair, Auxiliary drivebelt.
3.Remove 3nuts securing drivebeltguard to
compressor retainingstuds.
4.Slacken 3belt tensioner retainingbolts.
5. Remove compressor drivebelt.Mark direction
on belt ifrefitting. Refit
6. Fitcompressor drivebelt.
7. Fitdrive beltguard.
8. Fittorque metertocentre oftensioner, applyand
hold atorque of
35Nm (26lbf/ft).
9.Tighten...

AIRCONDITIONING
3
REPAIR
CONDENSER
FANAND MOTORS
Service repairno-82.15.08
Remove 1. Disconnect battery.
2. Remove 6screws andliftgrille panel from
vehicle.
3. Disconnect fanmotor multi-plugs andrelease
harness retaining clips.
4. Remove nutand washers andwithdraw fan
blade frommotor driveshaft.
5. Remove 2retaining screws,releasemotorfan
from shroud support brackets andfeed motor
multi-plug leadthrough appropriate aperture.
Refit 6. Feed motor leadthrough fanshroud.
7. Fitmotor tofan shroud support...