LR3/Disco 3
The wiper linkage and motor assembly are available as separate components. The wiper linkage and motor differs
between LH and RH drive models.
The assembly is located below the plenum grill in the engine compartment and is secured with bushes, sleeves and bolts.
The rubber bushes isolate the assembly from the body mountings.
The linkage assembly comprises a main tube, with a pivot housing at each end and the motor is attached directly to the
tube. A motor crank is positively attached to the motor output shaft. Two link rods then attach to the motor crank which
transfers power directly to each pivot crank.
The motor crank converts rotary motion from the motor output shaft into linear movement of the link rods. The cranks,
connected between the each link rod and pivot housing, convert the linear motion to reciprocating motion at the pivot
housing. This reciprocating motion is passed to the wiper arms and blades causing the blades to wipe an arc across the
windscreen.
Wiper Motor
The motor assembly comprises a dc motor, which drives a gear wheel via a worm drive attached to the motor spindle.
The gear wheel has a central spigot, which provides the attachment point for the motor crank.
The motor is connected electrically by a five-pin connector. The connector supplies two battery voltage feeds to the motor
(when switched). The motor has three sets of brushes with one brush connected to ground. One feed is direct to the
motor brush opposite the ground brush and operates the motor at normal (slow) speed. The second feed is connected to
Item Part Number
Description
1
RH pivot housing assembly
2
Link rod
3
Bracket
4
Bush
5
Motor assembly
6
Bush
7
Washer
8
Bolt
9
Link rod
