Sunbeam ALPINE I SERIES: APLINE II SERIES, Workshop Manual

Page: 314 / 413

4th re-issue
Page 4
It is very important to ensure that the tapers are
clean before the wheel is fitted. If necessary, the
tapers should be emeried and polished to remove
all dirt and rust; all mating faces should then be
well greased.
CHANGING POSITION OF TYRES
Road and traffic conditions and driving methods
may produce a tendency to irregular tread wear or
different rates of wear between one tyre and another.
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Fig. 3.
Methods
of
interchanging wheels and tyres
Steeply cambered roads, for instance, tend to cause
more rapid wear of the near-side front tyre than
of the others.
To minimise such effects, it is recommended that
front tyres be interchanged with rear tyres at
regular intervals. Diagonal interchanging provides
the most satisfactory first change because it
reverses the directions of rotation.
Subsequent interchanging of front and rear tyres
should be as indicated by their appearance, with
the object of keeping the wear of all treads even
and uniform. Change tyres round without removing
from wheels.
Methods of interchanging tyres and wheels are
illustrated in Fig. 3. It should be noted that where
wire wheels are fitted, the offside hub should never
be fitted to the nearside and vica versa. The
offside hubs are marked RHS and the nearside LHS.
NYLON TYRES
WSM.124
Section L (Tyres & Wheels)
Nylon tyres may develop temporary flatting after
standing for some time and cooling off, following a
long run during which high temperatures have been
reached.
These flat spots can be run out quite quickly but it
may be necessary to approach the speeds and
temperatures which have led to the flatting. For
example, flats on tyres which have developed after
a long fast run may be difficult to remove if the car
is then used for local "pottering" especially if the
weather has become colder and wetter.
Before balancing nylon tyres it is desirable to ensure
that the flats have been fully run out, otherwise a
false reading may be obtained.
WHEEL ALIGNMENT
Tyre wearing qualities are dependent to a large ex­
tent on the maintenance of correct wheel alignment
and steering geometry.
A regular check should be made of the dimensions
involved.
This Is particularly important a�er repairs
to accident damage.
Details of the recommended procedure for adjust­
ment are given in Section F (Front Suspension) of
this manual.
WHEEL TRIM DISCS
A wheel trim disc is fitted to each of the four
roadwheels and therefore must be removed from
the wheel before the spare is fitted. The disc has a
hole for the tyre valve and is held In position by the
nave plate.
To remove and refit
1. Remove the nave plate from the roadwheel.
2. Ease the wheel trim disc from three nave plate
studs.
3. Refitting Is the reverse of the removal.