L322 Range Rover System Description and Operation
WIPERS AND WASHERS
84-10
DESCRIPTION AND OPERATION
The wiper arms are positively located on tapered splines on the wiper linkage spindles. The arm is located on a curved
wiper angle adjuster, which mates with the curved underside of the arm attachment. A curved slot in the arm
attachment locates an adjustment shim and the three components are retained under compression on the spindle
spline by a self locking nut.
The wiper angle adjuster and the angle adjust shim allow the approach angle of the wiper blade to be finely adjusted
to its optimum wiping angle. The adjustment allows the approach angle of the blade to adjusted to 2
°
on each side of
the spindle axis. This adjustment provides precise adjustment of the blade approach angle for maximum wiper
performance. The wiper angle adjuster is pressed onto the spindle and requires a tool for removal. Once removed,
the wiper angle adjuster must be discarded and new one fitted on re-assembly.
The wiper arm has a pivot point, midway between the spindle attachment and the blade. Two tension springs are
connected to the wiper arm on each side of the pivot point and apply pressure to maintain the wiper blade in contact
with the windscreen.
The wiper blades are attached to the wiper arms with clips that allow the blade to pivot. Each blade comprises a
number of levers and yokes to which the rubber wiper blade is attached. The levers and yokes ensure that the
pressure applied by the arm tension spring is distributed evenly along the full length of the blade and also allow the
blade to adjust to the curvature and contour of the windscreen. The drivers side blade is fitted with an aerofoil which
presses the blade onto the windscreen at high speed, improving the wiper performance.