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Section D
Contents
Description
Routine maintenance
Operation 1 Toe-in adjustment, front wheel alignment
Operation 2 Camber adjustment
Operation 3 Castor angle adjustment
Operation 4 Steering wheel - removal and replacement
Operation 5 Steering lock/ignition switch - removal and
replacement
Operation 6 Steering column - removal and replacement
Operation 7 Steering rack - removal and replacement
Operation 8 Steering rack damper adjustment
Operation 9 Steering rack pinion preload adjustment
Operation 10 Steering gear overhaul, including inner ball joint
removal and bellows removal
Track rod inner ball joint renewal
Steering gear overhaul
Replacing steering rack gaiters
Figure 1 Castor, camber and king pin inclination
Steering
Description
The rack and pinion steering gear is mounted in rubber insulators
attached to the front cross member.
Movement of the steering wheel is transmitted by the steering shaft
through a flexible coupling to the helically toothed pinion. Rotation of
the pinion causes the rack to move laterally and the track rods,
attached to the ends of the rack, transmit this movement to the
steering arms and thus the road wheels to turn.
The track rod inner ball joints, attached to the rack, are protected by
convoluted rubber gaiters and the track rod outer ball joints, attached
to the steering arms, are protected by conventional rubber seals.
The unit contains 0.189 litre (½ pint) SAE 90 Hypoid gear oil, which is
put in during manufacture and normally no further lubrication is
required. On no account should the steering unit be completely filled
with oil. This will result in a pressure build-up which could burst or
blow off the gaiters.
Rack and pinion adjustments
The design and construction of the steering gear provides for two
adjustments:
(a) Rack damper adjustment
(b) Pinion bearing preload adjustment
Both these adjustments are obtained by varying the thickness of a
shim pack under a cover plate. It is necessary to remove the assembly
to carry out any adjustment.
Castor, camber and toe-in adjustments
The track rod ends are adjustable for length to permit toe-in setting.
The castor, camber and king pin inclination angles are set during
production, but provision is made for adjustment of castor and
camber angles by the addition or deletion of shims behind the upper
wishbone mountings brackets.
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