A.J.S. 16 Instruction Book - Refitting Cam Plate
TO REMOVE C L U T C H BEARING
The clutch hub is secured to the clutch back plate by the three clutch studs, with lock
nuts. The bearing can be removed after separating the clutch hub from the back plate.
Apply a little anti-centrifuge grease on bearing before final assembly.
TO DISMANTLE GEAR B O X
Dismantle outer and inner covers as described.
If the gear box mainshaft is to be taken out the clutch complete must be removed from
the main shaft.
Remove low gear pinion on layshaft (kick-starter wheel).
Remove striker fork spindle, by unscrewing, using spanner on the two flats machined
at the outer end.
Remove mainshaft, with the gears on it after disengaging striker fork from cam plate.
The layshaft can now be taken out, with gears on it, after disengaging layshaft striker
fork from cam plate.
If layshaft does not come out easily, rock layshaft up and down whilst pulling on the end
of the shaft, to extract it from the ball race.
Remove screw securing lock plate to rear chain sprocket.
Remove chain sprocket nut, which has a LEFT HAND THREAD.
Remove chain sprocket and distance piece from sleeve gear, mounted on splines.
Remove sleeve gear, by withdrawing through its ball bearing.
To remove oil seal without damage, the gear box case must be gently heated and dropped
face joint downwards on to a bench or wood block, the main ball race and oil seal will
then fall out of position, together with the layshaft ball bearing.
If oil seal is to be exchanged only, the used seal can be prised out, then gently press
replacement into position.
If this part of dismantling is to be carried out with gear box in frame, remove the chain
sprocket nut before removing outer gear box cover. Top gear can then be engaged,
with rear chain in position so that pressure can be maintained on the rear brake pedal,
to facilitate removal of chain sprocket nut.
Alternatively, obtain assistance to hold the rear wheel from turning whilst sprocket nut
is released.
REMOVAL OF CAM PLATE
Remove hexagonal dome nut, on front end of gear box, take out spring and plunger.
Remove small hexagon bolt, on front of gear box immediately above the plunger aperture,
cam plate can now be removed.
Remove remaining small bolt on front end of gear box, take out quadrant, with its
spindle.
NOTE—This spindle is not detachable.
REFITTING CAM PLATE
Place the quadrant in position, secure, with its bolt and washer. Raise the lever on the
quadrant until the top radius on the lever is in line with the top right hand stud for
gear box inner cover (top gear position).
Fit cam plate and verify the first two teeth only on quadrant are visible through groove
in cam plate for correct location.
Secure cam plate with its bolt and washer.
Refit pIunger, spring cap nut.
NOTE—Steel roller must be fitted to quadrant before inner cover is replaced.
FITTING GEARS I N T O GEAR B O X
Gently warm gear box case.
Fit main gear wheel bearing, layshaft bearing and oil seal.
Fit sleeve gear in bearing, sprocket distance piece, sprocket, securing nut LEFT HAND
THREAD, lock washer and retaining screw.
Fit mainshaft w i t h third and second gear assembled, also striker fork in third gear.
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