Sunbeam ALPINE I SERIES: APLINE II SERIES, Workshop Manual, Page: 178 / 413

3rd
re-issue
Page 14
Fl1. 13.
Plan view
of f
rant
suspension
showing camber shim
positions
On later Serles IV Cars onwards, the fulcrum pin
bracket Is not used thus Position C Is not evident;
therefore the shims are added to or removed
from Position A to decrease or Increase the wheel
camber respectively.
Note. Small shims are somtlmes found at either
end of these shim locations, and should be placed In
their previous positions.
The purpose of these small shims Is to ensure
correct alignment of the upper and lower llnk,
which Is necessary to give free movement of the
axle carrier, or to deal with any lack of parallelism
between the frame bracket and frame.
It
Is most
Important
to ensure
that all shim fixing bolts
are properly tightened and not In any way thread bound
and giving
false
Impression
of
tightness.
The relatlonshlp of the wheel camber angle to
track or "toe-In" Is such that the track setting
WSM.114
Section F (Front Suspension)
must always be checked following a wheel camber
re-set.
After correcting the camber figure by adjustment,
the steering axis inclination angle should be again
noted, to ensure that the stub axle Is not bent or
damaged.
This particularly applies when accident repairs are
being undertaken.
Checking steering ball pin heights
After accident damage, or in a case of excessive tyre
wear, these dimensions should be checked. If they
are outside of the limits shown In Fig. 23 the wheels
will not remain In track as the suspension system
reacts to rough road surfaces.
The dimensions are taken between the following
points after removing both outer track rods:
(a) The lower link outer fulcrum pin centre and the
underside centre of the taper hole In the end of
the steering arm.
(b) The lower link inner fulcrum pin centre and the
centre of the taper hole In the Swing and Idler
Levers on their underside face.
Steering ball pin heights are checked by means
01
a scribing block used on the simple tool illustrated
in Figs. 21 and 23. This tool is necessary as it enables
measurements to be -taken from the lower link
fulcrum pin centres which are the correct datum
points.
The tool can be cheaply and easily made from angle
Iron and bright strip steel. Its details are shown In
Fig. 22 with convenient alternative metric
dimensions.
Note. It Is Impossible to check ball pin height
dimensions from a level surface plate because the
fulcrum pins lie at the castor angle and not In
a horizontal plane.
The following procedure should be followed when
making these checks:-
1. Ensure that the wheels are In a straight ahead
position noting steering wheel position. Re­
move both outer track rods and check that
front wheels and steering wheel positions
remain unaltered.