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Before the inspection 2009 I had noticed that
there was a too big play in the steering bearings. I did
not expect this to be approved. This is a type of
fault that the inspector can control. Another thing was
that I wanted to change the handlebar as it had a design too
near my seat position.
I will try to show with pictures and text how I
adjusted the steering bearings. In this kind of
operation one will only dismount as little as possible.
It showed that this way was a no good planning and
everything became more worse than if I had done a full
dismount. The headlight with all the electrical wires is not nice to take away, furthermore brake, clutch and
wire to carburettor did complicate the work.
Well I started to dismount the bent holder for the handlebar. These were to be remounted later, turned
180°. This was the way to get a better driving position.
Also the speedometer was taken away. The nuts for the
front fork were unscrewed after the center nut for the
friction system was loosened. Catch the center pin
otherwise it will fall down and make a mark in the front
fender. Now the handlebar with its wires and also the
headlight could be fastened with the help of tape as far
back on the petrol tank that was possible. Note that the
small lamp for speedometer had to be taken away. The
picture is taken later when the front fork had been
dismounted. The complete front fork was taken away.
First off with the wheel. Read earlier description. Now
we are getting close the main problem. Unscrew the upper
tensioning bearing nut. This nut is a combination of nut
and ball path. I had earlier hanged the MC in my
engine lifter. A good device.
Now raise the cycle so far that the axle holding the
lower axial bearing opens up. It is good to have an old
carpet under. This will keep all small balls from
jumping all over your garage floor. Now you can put your
front fork against a wall. Don't lay it down on the
floor as all oil will pour out. About balls you can take
time to take away by hand, a magnet and a tweezers. I
got extra balls from a ball bearing
named
SKF6202. Easy to buy almost at all hobby parts supplier
and is much cheaper than to buy separate balls with the
diameter of 6.20 mm. Measured with a a sliding caliper.
It may be a good practice as you later must put them in
place by hand. A good thing is that you can take the
upper bearing ring to your nearest SKF supplier and ask
for a closed ring that fits. The lower outer ring is
almost impossible to dismantle and if, it is just the
same to bring back. I know.
Note that I put the loose balls in a fat-layer so they
will stay in place when mounting. Also count them so you
don't miss anyone.
See picture about the two springs sliding up. The center
nut with it's ball path has the same thread as the nut
for the spings. This center nut shall only be mounted
with a low moment. Just as much as the center axle don't
get any play. The force from this nut brings the two
bearings together. The nut covered with chrome shall
only get a moment that the steering friction is
acceptable. Wait with this nut till you remount the
headlight and also have all wires in the right place.
Note also that the speedometer holding plate is placed
under one of the fork arm nuts.
Now what's left is to remount the fork holder. It
shall be mounted over the ring plate, picture, that
protect the fine thread. Secure it rather hard after you
have mounted the bearing play. Then you mount the holder
for the handlebar. The nuts for the forks springs and
the speedometer are the next job. There will be a little
close limits for the speedometer cable.
On the pictures you see how it looks like with the
speedometer and the handlebar and how the fork holder
look like when pointing front.
The last three pictures how I managed the lower bearing
ring back again. You must heat and quickly drive the
ring in place with the help of a suitable pipe. Avoid
this last job.
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