1996 LAND ROVER DEFENDER oil pressure

AIR CONDITIONING
5
REPAIR RECEIVER/DRIER
Service repair no - 82.17.01
Remove
1.Disconnect battery.
2.Recover refrigerant from air conditioning system
See Adjustment, Refrigerant recovery,
recycling, recharging.
3.Remove 6 screws and lift grille panel from
vehicle.
4.Disconnect receiver/drier dual pressure switch
multi-plug.
5.Disconnect high pressure pipe at receiver/drier.
6.Disconnect bottom union at condenser.
7.Remove retaining bolts and open clamps.
8.Release receiver/drier from condenser and
discard. It is NOT recommended to refit old unit.
9.Discard all pipe connection 'O' rings. Cap or plug
all connections to prevent ingress of dirt and
moisture.
Refit
10.Coat unions, threads and new 'O' rings with
refrigerant oil prior to reassembly.
11.Secure new receiver/drier in retaining clamp.
12.Fit receiver/drier bottom union connector at
condenser.
13.Fit high pressure pipe to receiver/drier.
14.Fit pressure switch multi-plug.
15.Evacuate and recharge air conditioning system
See Adjustment, Refrigerant recovery,
recycling, recharging.
16.Reconnect battery.
17.Fit grille panel assembly.HEATER/COOLER UNIT - LH DRIVE
Service repair no - 82.25.21
Remove
1.Disconnect battery.
2.Recover refrigerant from air conditioning system
See Adjustment, Refrigerant recovery,
recycling, recharging.
3.Remove expansion tankSee COOLING
SYSTEM, Repair, Expansion tank
to gain
access to air conditioning high and low pressure
pipes.
4.Disconnect high and low pressure pipes. Discard
pipe connection 'O' rings. Cap or plug
connections to prevent ingress of dirt and
moisture.
5.Disconnect compressor clutch switch multi-plug.
6.Remove pipe connector from vacuum switch.
7.Remove retaining clip and disconnect control
cable from evaporator flap operating rod.
8.Remove screw and release outer cable retaining
bracket.

82AIR CONDITIONING
6
REPAIR 9.Remove plug connector from resistor.
10.Remove relay from connecting block to gain
access to fixing screw.
11.Remove screw and release relay connector
block. Retain relay in connector block.
12.Remove screw and detach air conditioning 30
amp fuse bracket from resistor. Refit both
resistor retaining screws.
13.Using suitable pipe clamps, clamp heater matrix
feed and return hoses at base of heater/cooler
unit. Release retaining clips and remove hoses.
14.From inside vehicle remove front passenger
carpet, if fitted.
15.Remove retaining screws and fold back footwell
insulation.
16.Remove 2 bolts securing heater/cooler unit lower
mounting bracket to bulkhead.
17.From inside engine compartment remove 2 bolts
securing top heater/cooler unit mounting bracket
to engine bulkhead. This also releases earthing
leads.
18.Remove bolt securing support bracket to front of
heater/cooler casing.19.Lift heater/cooler unit clear of air duct seal and
remove from vehicle.
20.Discard all pipe connection 'O' rings.
Refit
21.Coat unions, threads and new 'O' rings with
refrigerant oil prior to reassembly.
22.Position heater/cooler unit in engine
compartment and locate with air duct seal.
23.Secure unit top and bottom mounting brackets to
bulkhead and support bracket to front of unit
casing. Fully tighten fixing bolts when unit is
correctly positioned.
24.Fit footwell insulation.
25.Reconnect heater matrix hoses.
26.Fit air conditioning fuse bracket, relay connector
block, relay and resistor plug connector.
27.Fit control cable to evaporator air flap operating
rod, using a new clip.
28.Fit pipe connector to vacuum switch.
29.Connect compressor clutch switch multi-plug.
30.Connect high and low pressure pipes to
evaporator.
31.Fit expansion tank
See COOLING SYSTEM,
Repair, Expansion tank.
32.Evacuate and recharge air conditioning system
See Adjustment, Refrigerant recovery,
recycling, recharging.
33.Reconnect battery.

AIR CONDITIONING
9
REPAIR EXPANSION VALVE - LH DRIVE
Service repair no - 82.25.01
Remove
1.Remove heater/cooler unit
See Heater/cooler
unit.
2.Suitably support unit on a bench to prevent
damage to heater matrix pipes.
3.Remove 7 screws securing outlet duct to
heater/cooler unit.
4.Break sealing compound around edge of duct
and pull duct from unit.
5.Remove all fixing screws securing top cover
seam and cover sides to main casing.
6.Remove 4 screws and 4 nuts from top of cover.
7.Break sealing compound from unit casing and
top cover.
8.Lift off top cover, release grommet and feed
blower motor wiring and air flap operating rod
through respective apertures. Note thermostat
temperature probe which is inserted in top of
evaporator.
9.Release 2 clips securing expansion valve sensor
and lagging to low pressure pipe.
10.Unscrew union securing expansion valve to
evaporator high pressure pipe.
11.Remove expansion valve, complete with high
pressure pipe.
12.Disconnect high pressure pipe from expansion
valve.
13.Discard all pipe connection 'O' rings.
14.Clean sealing compound from all joints of main
casing, top cover and outlet duct.
Refit
15.Coat unions, threads and new 'O' rings with
refrigerant oil prior to reassembly.
16.Fit high pressure pipe to new expansion valve.
17.Fit expansion valve to evaporator pipe
connector.
18.Position valve sensor at low pressure pipe and
secure with lagging and clips.
19.Apply sealing compound around top edge of
main casing.
20.Feed blower motor wiring through top cover and
fit grommet.
21.Fit top cover to casing. Ensure thermostat
temperature probe is inserted in top of
evaporator. Apply mastic sealant to air flap
operating rod aperture.
22.Apply sealing compound to joint face of blower
motor outlet duct.
23.Locate duct over blower motor outlet and secure
to casing.
24.Fit heater/cooler unit
See Heater/cooler unit.

82AIR CONDITIONING
14
REPAIR Refit
19.Coat unions, threads and new 'O' rings with
refrigerant oil prior to reassembly.
20.Position heater/cooler unit in engine
compartment and locate with air duct seal.
21.Secure unit top and bottom mounting brackets to
bulkhead and support bracket to front of unit
casing. Fully tighten fixing bolts when unit is
correctly positioned.
22.If applicable, fit blower motor resistor block to
vehicle wing.
23.Connect blower motor wiring plugs.
24.Fit footwell insulation and carpet.
25.Fit control cable to evaporator flap operating rod
using new clip. Secure outer cable.
26.Connect water valve vacuum switch pipe and
thermostat leads.
27.Fit air control flap solenoid to side of
heater/cooler unit.
28.Reconnect heater matrix hoses.
29.Connect high pressure pipe to evaporator.
30.Connect low pressure pipe and fit insulation
cover.
31.Evacuate and recharge air conditioning system
See Adjustment, Refrigerant recovery,
recycling, recharging.
32.Reconnect battery.

82AIR CONDITIONING
16
REPAIR EXPANSION VALVE - RH DRIVE
Service repair no - 82.25.01
Remove
1.Remove evaporator
See Evaporator - RH
drive.
2.Unscrew union securing pressure sensor to low
pressure pipe.
3.Release spring clip securing temperature sensor
to low pressure pipe.
4.Unscrew union and remove expansion valve
from evaporator high pressure pipe.
5.Remove high pressure pipe from expansion
valve.
6.Discard all pipe connection 'O' rings.
Refit
7.Coat unions, threads and new 'O' rings with
refrigerant oil prior to reassembly.
8.Fit high presssure pipe to new expansion valve.
9.Fit expansion valve to evaporator high pressure
pipe.
10.Secure temperature and pressure sensors to low
pressure pipe.
11.Fit evaporator
See Evaporator - RH drive.