SECTION F6
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REAR SUSPENSION UNITS (GIRLING)
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The rear suspension units are of the spring
controlled, oil damped, telescopic type. Adjustment
of static spring loading is accomplished by
rotating the three position castellated cam ring at
the bottom of the spring. To adjust, support the
motorcycle on the centre stand and use a 'C'
spanner to turn the cam ring. Turning the cam ring
to the left increases the loading to cope with
additional loads and vice versa. Both units must be
on the same loading - if in doubt, start bath units
from the light load position. The damper units are
factory sealed thus cannot be serviced. The springs
can however be removed. Bonded rubber bushes are
used top and bottom for mounting the suspension
units. These can be pressed out for replacement and
new ones pressed in, smeared with a lubricant such
as soap to ease entry.
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SECTION F7
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CHANGING THE SPRING
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In order to change a spring it is recommended
that the suspension unit is gripped in a vice by
the bottom mounting. Turn the castellated cam ring
to the light load position. The help of a second
operator is needed so that as the spring is grasped
firmly in both hands and compressed down, the
second operator lifts clear both split collars.
Pressure on the spring is now released and the
spring can be lifted clear. Reassembly is a
reversal of these instructions.
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SECTION F8
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REBUSHING THE SWINGING FORK
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After long useage, where lubrication has been
neglected or where grease has been used instead of
the recommended SAE 140 oil, the two flanged bushes
working on the spindle may wear. After removal of
the swinging fork (Section F1 (9-15) wash all parts
very thoroughly in gasoline (petrol). Insert the
pivot spindle and check the fit. Excessive working
clearance will permit unacceptable side movement at
the rear wheel and this must be rectified by
renewing the spindle, bushes and oil sealing 'O'
rings. Renewal of these items should be dealt with
as follows:
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1
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If not displaced during removal of the fork,
lift out the outboard 'O' rings (see Fig. F10).
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2
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Using a light press and a suitable shouldered
press tool, press out the first bush, releasing the
large 'O' ring and dust cover.
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3
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Repeat for the second bush.
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New bushes are pre sized and do not require
reaming after fitting. Assemble as follows:
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4
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Place the dust cover over the bush as in Fig.
F10 and press the bush in fully.
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5
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Place the large 'O' ring in the dust plate.
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6
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Repeat for the second dust cover, bush and 'O
ring.
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7
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Place the smaller 'O' rings in the bush recess
of the swinging arm.
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The swinging arm is now ready to refit to the
motorcycle, using a new spindle if the original
shows signs of wear.
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