LAND ROVER DEFENDER 1999 Workshop Manual

82AIR CONDITIONING
6
REPAIR Refit
20.Clean TXV and mating face.
21.Lubricate new’O’rings with refrigerant oil and fit
’O’rings to pipes.
22.Position TXV and tighten Allen screws.
23.Position evaporator and fit sensor.
24.Position cover and tighten screws.
25.Clean pipes and mating faces.
26.Lubricate and fit new’O’rings, position pipes
and tighten Allen screw.
27.Connect trinary switch multiplug.
28.Position blower unit,tighten screws and connect
multiplugs.
29.With assistance position A/C duct assembly to
vehicle.
30.Connect drain pipe to evaporator.
31.Connect multiplug to relay bracket.
32.Align A/C duct to fascia, tighten securing bolt
and screws.
33.Position speakers and connect Lucars.
34.Position relay bracket and tighten bolts.
35.Clean pipes and mating face.
36.Lubricate and fit new’O’rings to evaporator
pipes.
37.Position pipes and tighten bolts to6Nm(4
lbf.ft).
38.Renew receiver drier.See this Section.
39.Recharge A/C system.See Adjustment.
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84 - WIPERS AND WASHERS
CONTENTS
Page
DESCRIPTION AND OPERATION
WINDSCREEN WIPERS - FROM 02MY 2..............................................................
REAR WIPER - FROM 02MY 4..............................................................................
REPAIR
PUMP - WINDSCREEN WASHER 1......................................................................
JET - REAR SCREEN WASHER 1.........................................................................
ARM - WIPER - FROM 02MY 2..............................................................................
WIPER MOTOR AND DRIVE RACK - FROM 02MY 3............................................
WHEELBOX/DRIVE PIVOT - FROM 02MY 4.........................................................
RELAY - WIPER DELAY - FROM 02MY 5..............................................................
MOTOR - WIPER - TAIL DOOR - FROM 02MY 6..................................................
RELAY - TAIL DOOR WIPER - FROM 02MY 7......................................................
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WIPERS AND WASHERS
1
DESCRIPTION AND OPERATION This page is intentionally left blank
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84WIPERS AND WASHERS
2
DESCRIPTION AND OPERATION WINDSCREEN WIPERS - FROM 02MY
1.LH wheelbox
2.Cable
3.RH wheelbox
4.Wiper motor
5.Spindle with DIN taper arm attachment
6.Spacer
7.Locknut
8.Seal
9.Locknuts
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WIPERS AND WASHERS
3
DESCRIPTION AND OPERATION Although windscreen wiper functionality remains the same, the mechanical architecture has undergone significant
changes. The body structure has undergone some minor changes to house the revised wiper linkage.
A modified wiper motor is introduced which is balanced to reduce operation noise. The brush plate is fitted with
capacitors to reduce radio interference and a thermal cut-out is introduced to prevent motor burnout. The motor
also contains a new park switch which also reduces operation noise. A common motor is now used on both LHD
and RHD variants.
The motor is repositioned on the bulkhead which allows a straighter drive cable run. The straighter run reduces
load on the cable allowing a stiffer cable to be used. The stiffer cable and the incorporation of a reduced friction
material reduces torsion wind-up of the cable and results in smoother wiper operation and a reduction of blade
over travel.
New, larger wheel boxes are fitted in an inverted position from the previous installation. The bulkhead mounting
holes are larger with flats for positive location of the wheel box spindle. The wheel boxes now feature a 40 tooth
gear ratio in lieu of a 32 tooth gear. This reduces backlash and load and further reduces blade over travel. The
wheel box casings are secured with locknuts.
The wheel box spindles now have a splined DIN taper fitting for the new wiper arms which are secured on the
spindle with an M8 nut. The taper improves arm retention.
A new grease is introduced which improves wiper operation at very low temperatures.
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84WIPERS AND WASHERS
4
DESCRIPTION AND OPERATION REAR WIPER - FROM 02MY
1.Rear wiper relay
The rear wiper system is unchanged except for the addition of a wiper motor relay into the electrical circuit.
The new rear wiper relay is located in the tail door, below the wiper motor. The relay coil is energised by a feed
supplied from the rear wiper switch. When the relay contacts close, a feed is supplied via the ignition switch
(position II) and a fuse in the passenger compartment fuse box, through the relay contacts to the wiper motor.
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WIPERS AND WASHERS
5
DESCRIPTION AND OPERATION
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WIPERS AND WASHERS
1
REPAIR PUMP - WINDSCREEN WASHER
Service repair no - 84.10.21
Remove
1.Remove headlamp.See ELECTRICAL,
Repair.
2.Position drain tin to collect any fluid spillage.
3.Disconnect multiplug from washer pump.
4.Disconnect hose from washer pump.
5.Release washer pump from reservoir and
discard sealing washer.
Refit
6.Fit new sealing washer and secure pump to
reservoir.
7.Connect hose and multiplug to washer pump.
8.Fit headlamp.See ELECTRICAL, Repair.
9.Fill reservoir with screen cleaning fluid.JET - REAR SCREEN WASHER
Service repair no - 84.30.09
Remove
1.Release and remove both rear side window
finishers.
2.Remove 8 screws securing both rear grab
handles.
3.Remove both rear grab handles.
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