Dnepr MT9 - Page 23

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Trouble
Wheel spokes broken
Wheel play at the axle
and whee l run-out in the
plane of frame
..
Cause
I. Spokes loose or ununi-
formly tensioned
I. Axle not tightened
2. Gland nut came unscrew-
ed and moved off
3. Roller bearings worn
4. Spokes maladjusted due
to con
tinuous serv ice
Symptoms and fault trac ing
I. Examine and check the
spokes for proper tensioning,
for which purpose pl ace the
motorcycle on a
support,
quickly turn the wheel and,
by slightly pressing a wrench
to the spokes, listen to the
so und to determine whether
the spokes are uniformly ten-
sioned
I. Check for play and pro-
per tightening of tl1e axle af-
ter first placing the motor·
cycle on a support
2. Check the gland for pro·
per fastening
3. Having made sure that
failure is not clue to causes
specified in steps I and 2,
check the wheel for wobbling
without removing it from the
motorcycle
4. Place the motorcycle on
a s upport , rotate the wheel.
Check the run-out (the permis-
sible run-out must not exceed
1.5 mm over the wheel rim)
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Continued
Remedy
I. Repair the wheel. Repla-
ce broken spokes and adjust
all the spokes for proper ten-
sioning
1. El iminate the play at rear
wheel, l
ight en the axle with
nut,
slacken the set screw of
front wheel end piece
and
screw the ax le into right-hand
threaded end piece of the f ork
(left-hand th read), tighten
again the set screw wit h nu t.
2. Screw home the gland
nut, slacke.n it back
1
/1o turn
and secure
3. Repair the wheel. Adjust
the bearings for proper tigh-
tening. When replacing the
bear in gs , stuff the hub with
grease to
1
/a of its capacity
4. Adjust a ll the spokes for
proper iensioning
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