when the spindle nut is removed together with the spacer and washer, the
spindle can be taken out.
Balancing the wheels. At high speeds, if the tyres are out of balance, the
steering can be affected and in extreme cases the front forks can 'flap' at
maximum speed. As oil seals are used on both wheel spindles, the wheel
cannot be accurately balanced until the friction caused by the seals is
removed. The courses open are:
(1) Remove the oil seals.
(2) Obtain two ball races with an internal diameter sufficiently large
enough to take the wheel spindle, mount the wheel on two boxes.
If the wheel is correctly balanced, it should remain stationary in any
position in which the wheel is placed. The most likely out of balance
position will be where the valve is situated or where a security bolt is
fitted. The heaviest part will of course come to rest at 180° or 6 o'clock.
To counter-balance, use thin strips of lead twisted round the spoke.
Special weights for this purpose are supplied by the tyre makers. When
the wheel is in perfect balance, secure the strips of lead with insulating
tape which should be painted with jointing compound. The effect of a
balanced wheel has to be tried to be appreciated if continued high speeds
are permissible.
Lightweight Models
To remove front wheel (1959 type). With front wheel clear of the ground,
run back the brake cable adjuster, disconnect the cable.
Release the two nuts securing the guard stay.
Give both nuts a sharp tap to centralise the stays.
Take off both spindle nuts, the wheel will come out of the sliders.
To remove front wheel (1960-1961 type). A pull out spindle is used on
these models. Follow instructions for earlier type wheel, then remove the
right side spindle nut and pull out the spindle. A tommy bar can be used
in the spindle hole provided.
To remove front wheel (250 c.c. Scrambler). Refer to details given for
the Heavyweight Models as the wheel arrangement is identical.
To remove front wheel (350 c.c. Lightweight Model). Disconnect brake
cable, take off nut securing brake torque arm to brake.
Release the spindle nut, take off the two caps on the slider ends, the
wheel will come out.
To remove rear wheel (Lightweight Model). Remove rear chain guard.
Remove speedo drive cable.
Remove chain connecting link.
Remove rear brake rod adjuster.
Release both wheel spindle nuts, pull the wheel clear of the fork ends.
Standing on the left side lean the machine to the left and take out the
wheel.
When refitting, take care to carefully locate the dogs for the speedo
drive into the slots in the hub.
To remove rear wheel (Scrambler Model). Remove rear chain connecting
link.
Remove rear brake rod adjuster.
Remove speedo cable.
96
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