Sunbeam ALPINE I SERIES: APLINE II SERIES, Руководство по ремонту, Страница: 177 / 413

WSM, 124
Section F (Front Suspension)
Jack up the front of the car (using a block of wood
between the jack and the front crossmember).
Check the wheels for "run-out" and position with
the maximum "run-out" in the horizontal as
described in "Preparation of Vehicle".
Lock the wheels by applying the footbrake, and
keep the brake applied by wedging a wooden spar
between the pedal and the front seat.
It is most important that the wheels are properly
locked when they are moved from lock to lock
during the actual check.
Place turntables under each front wheel, and wood
packing of the same height as the turntables under
each rear wheel, to keep the vehicle level.
Remove the locking pins one from each turntable
(see Fig. 12).
The wheels must be in the straight ahead position.
Slide the turntable scales (degrees of turn) round
so that the "zero" is in line with the pointer and
lock the scales.
Apply the gauge (Churchill 121 Land U is illustrated)
to the wall of the tyre of the left-hand front wheel
making sure that the contact points of the
gauge to the tyre are clear of the normal
bulge of the tyre, above the contact area of
the
tyre to
the
ground.
Turn the scale of the gauge on its pillar so that It is
parallel with the road wheel and set the spirit level
slide to the mid-way position.
Note. This is not zero on the castor and steering
axis inclination scale.
Set the gauge vertically on the road wheel by
moving the top of the pillar backwards or forwards
until the air bubble is central between the hair
lines on the spirit level.
For checking the steering axis inclination the scale
must be parallel to the road wheel and will meas­
ure the angle through which the stub axle moves
downwards from the . straight ahead position on
each 20 ° lock.
Turn the road wheels to 20
°
in the left-hand lock.
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re-issue
Page 13
Move the spirit level slide until the air bubble is
central between the hair lines on the spirit level.
Take the reading shown on the Castor and Steer­
ing Axis Inclination scale.
Turn the road wheels to 20
°
in the right-hand lock.
Move the spirit level slide until the air bubble Is
central between the hair lines on the spirit level.
Note the reading shown on the Castor and Steering
Axis Inclination Scale.
Deduct the first (left-hand) reading
from
the
second (right-hand) reading to obtain the steering
axis Inclination Jn degrees.
The steering axis inclination is checked on the right­
hand side In the same way as described for the left­
hand side, with the scale parallel to the road wheel.
First take the left lock reading and then the right
lock reading; deduct the first reading
from
the
second reading.
CAMBER ANGLE
To adjust (See Figs. 13 and 14)
If, on checking, It is found necessary to effect an
adjustment to the wheel camber, proceed as
follows:-
Remove the front wheel.
The upper link inner attachments can now be
seen.
SLACKEN the nuts retaining the upper fulcrum
pin (32) to the crossmember.
SLACKEN the bolts between brackets (33 and 35)
I
to permit the selection of shims. On later Serles IV
Cars onwards these brackets are not used therefore
this operation is unnecessary.
'
To increase the camber angle move the required
number of shims from position (A) to position (B)
(See Fig. 13).
To decrease the camber angle remove the required
number of shims from position (C) and add a
similar thickness of shims to position {A)-OR
if shims are found In position (B) remove from this
position and insert in position (A).