2002 LAND ROVER DISCOVERY seats

navigation tailgate remote start differential compression ratio length

Page 958 of 1672

LAND ROVER DISCOVERY 2002 Workshop Manual FRONT SUSPENSION
DESCRIPTION AND OPERATION 60-19
The right hand end of the torsion bar has a machined spigot which provides for the attachment of the forged steel
short and long arms. The spigot for

FRONT SUSPENSION
DESCRIPTION AND OPERATION 60-19
The right hand end of the torsion bar has a machined spigot which provides for the attachment of the forged steel
short and long arms. The spigot for the short arm is splined and mates with splines in the short arm. The short arm is
located in a specific position on the splines and clamped to the spigot with a Torx bolt and locknut. The short arm is
not a serviceable item other than the actuator attachment bush. The smaller spigot diameter locates the long arm.
The long arm is fitted with a slipper bush which is located on the spigot and secured with a large washer and a special
bolt. The slipper bush comprises two inner and two outer bushes which are installed from each side of the long arm.
The outer bushes have three lugs which locate in the long arm to prevent the bush from rotating. The long arm also
provides the attachment point for the actuator piston rod and the anti-roll bar link.
The actuator has a forked end which locates on the bush in the short arm and is secured with a bolt and nut. The
piston rod of the actuator locates through a hole in a cast boss on the long arm which is fitted with a special bush. A
shoulder on the piston rod seats in a hole in the bush and a locknut on the end of the piston rod secures the rod to
the long arm and bush.
The front torsion bar is attached to the front chassis cross member. Two rubber bushes are fitted to the torsion bar
and are located in clamp plates. The clamp plates are located in slots in the cross member and secured with bolts.
The rear torsion bar is attached to the tubular cross member at the rear section of the chassis. Two rubber bushes
are fitted to the torsion bar and are located in clamp plates. The clamp plates are located in fabricated brackets
attached to the tubular cross-member and secured with bolts.
Two anti-roll bar links are mounted on brackets on the front and rear axles. Each anti-roll bar link is fitted with a
spherical bearing at each end. One bearing is attached to the link at a 90
° angle. The threaded shank of the bearing
is located through a hole in a bracket on the axle and secured with a locknut; a washer is installed on the threaded
shank between the bearing and the bracket. The second spherical bearing is attached in-line with the link and locates
in the torsion bar on the left hand side and the long arm on the right hand side. The front anti-roll bar links are longer
than the rear links and are not interchangeable.
Accelerometers
Two accelerometers are used for the ACE system. The upper accelerometer is mounted on a bracket, behind the
headlining adjacent to the rear view mirror and the sunroof ECU. The lower accelerometer is located on a bracket on
the inner sill panel under the RH front floor.
The lower accelerometer is the primary sensor used to measure lateral acceleration of the vehicle for roll control. The
upper accelerometer is used by the ECU for roll correction and fault detection in conjunction with the lower
accelerometer.
Each accelerometer is a solid state capacitive acceleration sensor and operates on a 5 V supply from the ECU. The
upper and lower sensors can measure acceleration in the range of
± 1.10 g and return an output to the ECU of
between 0.5 and 4.5 V.
Failures of an accelerometer are recorded by the ECU and can be retrieved using TestBook. A special tool is required
to remove and replace a sensor in the bracket.