Lexus RX300 (MCU15). Manual — part 51
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CHASSIS — DRIVE SHAFT
77
DRIVE SHAFT
JDESCRIPTION
D The front drive shaft uses the double offset type CVJ (Constant Velocity Joint) on the front differential
side, and Rzeppa type CVJ on the wheel side.
D The rear drive shaft uses the tripod type CVJ on the rear differential side, and Rzeppa type CVJ on the
wheel side.
" Front Drive Shaft A
187CH04
187CH05
Wheel
Side
Double Offset Type CVJ
Rzeppa Type CVJ
Front
Differential
Side
Right Side
Rzeppa Type CVJ
Double Offset Type CVJ
Wheel
Side
Left Side
Front
Differential
Side
" Rear Drive Shaft A
187CH06
Wheel
Side
Rear
Differential
Side
Rzeppa Type CVJ
Tripod Type CVJ
Right and Left Side
CHASSIS — SUSPENSION AND AXLES
78
SUSPENSION AND AXLES
JSUSPENSION
1. General
A MacPherson strut type independent suspension is used for both the front and rear suspension.
On the LEXUS RX300, the characteristics, the allocation of the components, the spring and shock absorber
have been optimally tuned to realize excellent riding comfort, stability and controllability.
187CH44
" Specifications A
Tread
mm (in.)
1566 (61.6)
F
Caster*
1
degrees
2
°09’
Front
Suspension
Camber*
1
degrees
–0
°24’
Suspension
Toe-In*
1
mm (in.)
1 (0.04)
King Pin Inclination*
1
degrees
12
°10’
R
Tread
mm (in.)
1555 (61.2)
Rear
Suspension
Camber*
1
degrees
–0
°42’
Suspension
Toe-In*
1
mm (in.)
3 (0.12)
*
1
: Unloaded Vehicle Condition
CH
BO
CHASSIS — SUSPENSION AND AXLES
187CH09
Base
Valve
Rebound
Spring
Rebound
Stopper
Stopper Plate
Linear Control
Valve
79
2. Front Suspension
General
The MacPherson strut type suspension features an L-shaped lower arm with strut bar function. Its optimal
suspension geometry ensures smooth controllability, and assists stability, riding comfort, and the ability
to overcome rough terrain.
187CH08
Shock Absorber
1) General
Low-pressure (N
2
) gas sealed front shock absorb-
ers with a linear control valve and a built-in re-
bound spring have been adopted to realize both
driving stability and riding comfort.
CHASSIS — SUSPENSION AND AXLES
174CH02
Low
Speed
Medium and
High Speed
Conventional
Valve
Linear
Control
Valve
Piston Speed
Extension
Side Damping
Force
Damping Force Characteristics
80
2) Linear Control Valve
The linear control valve consists of a C-valve, a cutout valve and a leaf valve. These valves adopt a lami-
nate construction and form orifices. At low piston speeds, the oil flows through the cutouts of the valves
to achieve a linear damping force. At medium and high piston speeds, the valves flex to increase the
amount of oil that flows through, thus reducing the damping force.
Through the adoption of the linear control valve, the changes in the damping force are made constant
at low piston speeds, thus making the vehicle behave more smoothly in relation to the steering operation.
At medium and high piston speeds, the damping force is reduced to lessen the vehicle vibrations in rela-
tion to the roughness of the road surface.
174CH04
C-Valve
Low Speeds
Medium and
High Speeds
Leaf
Valve
Cutout
Valve
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