Rover DEFENDER 300Tdi, Workshop Manual

Page: 406 / 450

WIPERS AND WASHERS
1 OVERHAUL
WIPER MOTOR
Service repair no - 84.15.18.
Dismantle
1. Remove wiper motor from vehicle See Repair,
Wiper motor and drive rack.
2. Remove wiper motor gearbox cover.
3. Remove circlip and plain washer securing
connecting rod.
4. Withdraw connecting rod.
5. Withdraw flat washer.
6. Remove circlip and washer securing shaft and
gear.
7. Clean any burrs from gear shaft and withdraw
gear.
8. Withdraw dished washer.
9. Add alignment marks to yoke and gearbox for
reassembly.
10. Remove yoke securing bolts.
11. Withdraw yoke and armature.
12. Remove brush gear assembly.
13. Remove limit switch.
Inspection and test
14. Check brushes for excessive wear, if they are
worn to 4,8 mm in length, fit a new brush gear
assembly.
15. Using a push type gauge, check that brush
spring pressure is 140 to 200 g when bottom of
brush is level with bottom of slot in brush box. Fit
a new brush gear assembly if springs are not
satisfactory.
16. Test armature for insulation and open- or
short-circuits. Use a 110 V 15 W test lamp. Fit a
new armature if faulty.
17. Examine gear wheel for damage or excessive
wear.
Key to wiper motor components
1. Flexible drive
2. Gearbox cover
3. Connecting-rod retaining washer and circlip
4. Connecting-rod
5. Flat washer
6. Gear shaft retaining washer and circlip
7. Drive gear 8. Dished washer
9. Alignment marks - yoke to body
10. Yoke securing bolts
11. Armature and yoke
12. Brush gear assembly
13. Limit switch