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III. DISMANTLING AND ASSEMBLING
WITHOUT SPECIAL TOOLS
1. REMOVING THE FRONT WHEEL
To remove:
a) Unscrew the bowden cable nut and take the
bowden cable off the brake cams lever.
b) Unscrew the wheel spindle nut remove the
spring washer and wheel spindle.
c) Turn the R. H. front fork leg slider and remove
the brake torque reaction anchor on the back plate
from the opening in the fork leg and take the wheel
off.
To replace:
A. Check the position of the brake cable rest on
the handlebars.
B. Replace the wheel and turning the R. H. fork
leg slider push the brake torque reaction anchor
home on the back plate into the opening in the
slider.
C. Replace the front wheel spindle from the left.
D. Replace the spring washer and screw the nut
on from the right.
E. After replacing the cowl and the wheel on the
machine push the bowden cable of the rear brake
and the cowl rest. Push the bowden cable screw on
the brake lever and adjust the brakes.
2. REMOVING THE REAR WHEEL
To remove:
a) Unscrew the rear wheel spindle nut and
remove the spring washer.
b) Loosen the rear brake bowden cable from
the
clip (from the inside of the pivoted fork).
Unscrew
the bowden cable nut and take the
bowden cable
off the brake cams lever.
c) Pull out the rear wheel spindle from the
right
(using the steel bar pushed through the
hole in the
spindle head).
d) Take off the brake torque reaction anchor.
f) Remove the wheel from the gear pins of
the
chain wheel, place it to the upper rear part
of the
rear cowl, take off the brake back plate
from the
wheel.
g) Catch the motorcycle at the grip on the
rear
cowl and lift it in so that the wheel could
freely
fall out.
To replace:
A. Check the position of the brake cable rest
in
the brake lever.
B. Place the wheel into the upper rear part
of the
rear cowl, push the brake back plate and
push the
wheel with the cowl on the pins at the chainwheel
into the holes in the rubber inserts.
C. Place between the wheel and the fork arm the
brake torque reaction anchor (Fig. 27) and push the
spindle home. After replacing the cowl and the
wheel on the machine push the bowden cable of
the rear brake and the cowl rest. Push the bowden
cable screw on the brake lever and adjust the
brakes.
3. REPLACING THE WHEEL BALL
BEARINGS
To remove:
a) Remove the wheel.
b) Remove the dust rings from both wheels
and
the circlip on the R. H. side.
c) Push a thin rod through the L. H. bearing
hole
and the spacer tube bearing against the
inner edge
of the R.H. bearing. Tapping lightly
on the rod
knock the bearing out and remove
the spacer tube.
d) Using a suitable piece of tube knock out
the
L.H. bearing.
To replace:
A. Insert from the left a steel sheet ring and
pressing on the bearing outer race push the
bearing
until the circlip can be placed in position.
B. Replace the spacer tube from the right and
press the second bearing in.
C. Check whether the L.H. bearing rests on
the
circlip and then push the dust rings home
and
replace the wheel.
12 of 18
JAWA 50 type 20, 21, 23, 23A Owners Handbook page 40 to 43
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