Range Rover P38
76
CHASSIS AND BODY
NEW RANGE ROVER
2
DESCRIPTION AND OPERATION
DESCRIPTION
The sunroof is electrically operated through a rocker
switch located on the centre console. An electric
motor, attached to the sunroof frame, drives the glass
sunroof panel to the tilt or open positions. The glass
panel is operated by two cables which are driven by
the motor.
The sunroof frame is bolted to eight mounting points
on the roof panel. The frame is constructed from
pressed steel and supports all of the sunroof
components. A bracket at the front of the frame
provides an attachment point for the sunroof motor.
The motor is supported on the frame with three
spacers and secured with three self tapping screws.
A guide is fitted to each side of the sunroof frame.
Each guide has an attachment at its forward end for
the sunroof panel. The rear of the panel is attached to
each guide on levers which operate the tilt function.
The forward attachments and the levers slide in the
guide to allow the panel to move in the desired
position. Each lever has a peg located in a curved slot
in the guide.
The sunroof motor has a worm drive which drives a
gear in a cast housing attached to the end of the
motor. The gear has a small pinion gear attached to
the outer part of its spindle. The pinion engages with
the spiral cables to form a rack and pinion drive.
Rotation of the motor turns the pinion which in turn
drives the cables in the required direction.
The two cables are attached either side of the pinion.
One end of each cable is attached to the guide. The
opposite end is clamped in its position on the pinion
by a riveted bracket. The cables run in metal tubes to
the guides. As the sunroof panel is closed, the cables
are pulled through the metal tubes. The displaced
cable is guided into plastic tubes which protect the
cable and prevent the cable snagging. The cables are
made from rigid spring steel and therefore can push
as well as pull the sunroof along the guides.
A sunshade is also located in the guides. When the
sunroof panel is closed or tilted, the sunshade can be
retracted or pulled forward to cover the sunroof panel.
When the sunroof panel is opened, two brackets on
the sunshade engage with the panel as it is retracted.
The sunshade is then pulled back by the retracting
panel. When the panel is closed, the sunshade
remains retracted until pulled manually to its closed
position.
Drain hoses are connected to the front and rear
corners of the frame. The drain hoses are located
inside the ’A’ and ’D’ post pillars to allow water which
has collected in the frame to escape. A one way valve
is fitted to the end of each drain hose to prevent the
ingress of dirt and moisture.
