AJS 350 1954, Maintenance Manual And Instruction Book, Page: 65 / 96

It will be found easier to re-fit the wheel to the fork ends with the brake cover plate
hanging free and then, holding the wheel on its left-hand side, as far forward in the fork
end as is possible, to swing the right-hand side backwards, lifting up the free cover plate
so that the slot in it is positioned to engage with the square headed anchor bolt and
then swinging the right-hand end of the axle forwards till engagement has been completed.
After re-fitting the rear wheel, check the rear chain adjustment, and, if necessary, re-set it.
Then check the rear brake adjustment and, if necessary, re-set it, Abo check that brake
cover plate anchorage is correct (see illustration 20.)
WHEEL BEARINGS AND ADJUSTMENT
The wheel bearings are of taper roller type. The inner bearings for the rollers are
integral with the wheel spindle in the case of the front wheel, and are separate tracks
that are a push fit on the centre spindle in the case of the rear wheel. (Reference to
Illustration 21 will make that clear.) The outer cups for the rollers are pressed into the
hub shed. They have a fixed location one side and an adjustable location on the other.
The fixed location is provided by a circlip in a groove cut in one end of the hub shell,
while the adjustable location is regulated by a screwed ring that is threaded into the
opposite end of the hub and the position of which can be locked by an encircling nut.
On the rear wheel the adjusting ring is located on the left-hand side of the hub while,
on the front wheel, the adjustment is on the right-hand side.
It is rarely necessary to make adjustment to wheel bearings. It is most important they
are not adjusted, too tightly as this would quickly ruin them. There must always be a
slight amount of end play. This should be about .002", which represents a just perceptible
rim rock. (Not more than 1/64" rock.)
To adjust the rear wheel bearings the wheel must first be removed from the machine,
but those of the front wheel can be dealt with in situ.
A service method of ensuring correct adjustment is :
Slacken the lock nut.
Tighten the adjusting ring until all slackness has been taken up.
Slacken back the adjusting ring exactly one-half turn.
Tighten the lock nut, making sure that, when doing so, the adjusting ring does not creep
round.
TO DISMANTLE A FRONT WHEEL BEARING
These instructions need reference to the upper part of Illustration 22.
Remove wheel from machine.
Remove nuts, and brake cover plate with shoes, etc., from left-hand side of wheel-
Turn to right-hand side and slacken lock nut. (11.)
Completely unscrew the adjusting ring (10) and take it away with the lock nut (11)
still on it together with cover disc,
Carefully apply steady pressure on the threaded end of the wheel spindle which will,
In turn, eject from the opposite end of the hub the cup housing for the oil seal (9), the
oil seal (8), the metal washer (7) that is behind the oil seal and the outer cup (6). These
may be lifted away as they emerge.
The front wheel spindle (6), with its two sets of rollers in cages, may now be lifted out
of the hub.
Turn to the left-hand end of the hub, carefully apply steady pressure on the visible
washer (avoiding fouling the circlip that can be seen in the hub end), so that the complete
left-hand assembly of oil seal and outer cup is pushed a trifle further Into the hub shell.
This will take off pressure on the circlip, thereby making its extraction an easy matter.
Extract circlip ( i ) . and then, reversing the hub, apply pressure on the inside edge of the
outer cup (6), so that it is forced out of the hub. As it emerges it will push in front of it,
the oil seal externa! plain washer (2), the oil seal (3), with its encircling spacer collar (4)
and the oil seal inner plain washer (5), all of which can be lifted away as they appear,
to be finally followed by the cup (6).
The dismantling Is then completed.
To re-fit, reverse the above procedure, remembering that, after cup (6), washer (5),
spacer (4), oil seal (3) and washer (2) have been inserted in the plain end of the hub,
to re-fit the circlip (1) and then carefully to apply steady pressure on the inner edge of
the cup (6) to force the above entire assembly tightly back against the circlip (1).
Position disc to permit access to grease nipple.
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