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FRONT SUSPENSION AND STEERING
As a precautionary measure
it
is most
desirable to check that an end float of
.004"
to
,012''
in the lower outer wishbone
arm attachment to the shackle pin is main-
tained. Each arm is adjusted independently.
Apart from damage at this point, tightness
at this point can appreciably affect the ride
of the car (see page 12, para. xii).
Front wheel alignment of parallel to
+"
toe
in should be checked if the front wheel
alignment is in doubt (see below).
4.
FRONT WHEEL ALIGNMENT
The track shodd be between parallel and
B"
toe in.
The outer tie rods are adjustable for length
and usually to give the correct track the
distance between the centres of the ball
joint assembles will be 7.68".
If the wheel alignment is in doubt and a
check is to be made it will be necessary to
satisfy the following initial requirements
:
(a) Tyre pressures are correct for all tyres.
(b) The amount of wear on both front tyres
must be the same.
(c) The front wheels are true and in
balance.
(d) The checking floor must be level.
(e)
The car k i n the static laden condition.
5.
TO A D J U S T F R O N T WHEEL
A L I G N M E N T
With the car satisfying the initial
requirements, set the front road wheels
in the straight ahead position and push
the car forward a short distance.
Check the alignment of the wheels with
a Dunlop Optical Gauge or similar
instrument.
If only a fractional correction is neces-
sary it can be made on the outer tie rod
on the opposite side to the steering box.
T o carry out this adjustment it is first
necessary to loosen the two lock nuts
and turn the tube to shorten or lengthen
the tie-rod assembly. Lock the tube by
the two nuts and move the car forward
half a revolution of a wheel and check,
and make a further adjustment if
necessary.
(e)
If an appreciable amount of maladjust-
ment has to be corrected, check first the
length of the outer tie-rods. Should
these lengths be equal make the neces-
sary correction to both. When they are
found to be of unequal length first
correct the rod nearest the steering box
to 7.68" and then make any adjustment
to the further one. After making such
adjustments it is a wise precaution to
measure the length and if found to
differ greatly from 7.68" the front
suspension should be checked for acci-
dental damage.
Fig. 3
Outer Tie
Rod Assembly.
6.
STEERING LOCK STOPS
The steering lock stop consists of an eccen-
tric roller mounted on each bottom trunnion
by means of a setscrew and lock washer.
It is most important that the steering lock
stops come into action before the conical peg
of the rocker shaft follower reaches the end
of its cam path. This movement is not more
than
33"
either side of the mid point of the
cam and will allow the steering wheel to
travel approximately 2; turns from lock to
lock.
The correct adjustment of the lock stops
should allow a "Back lock" of
31"
and a
"Front lock" of 2 8 r .
When checking this adjustment it is neces-
sary to satisfy the following initial require-
ments.
(a) The tyre pressures must be correct for
all four tyres.
(b) The testing ground must be flat.
( c )
Car must be in the static laden
condition.
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