Section 9 Rear Fork - ZONGSHEN ZS250GY-3 Service Manual

The rear fork connects rear wheel with frame.It makes rear wheel rotate around a fixed point through
rear shock absorber to reduce the strike and shake of rear wheel.
1 The Structure and Working Principle of Rear Fork
Because rear fork gets big strike and shake,the
requirement on material and jointing is very high.It
is made through the method of jointing and so on.It
mainly consists of rear fork,dust seal,dustproof seal
cover and rear cover of bearing.
In order to keep rear fork rotating up and
down around the vehicle body,there is bearing
shaft or bearing installed at the connection of rear
fork and vehicle body.When rear fork rotates,it will
make rear wheel more flexibly and more stably.
2 Disassembly and Maintenance of Rear Fork
[1]Check whether rear fork is distorted or crakes
because of the outside force,whether the match
clearance of each component of rear fork becomes
big,and whether the rotating times of rear fork is
too much.
CAUTION
Replace or maintain rear fork in time if it has the
problems above to ensure the comfort and safety of riding.
3 The cause,trouble description and repair method of rear fork
component
cause
description
Rear wheel gets strike.
Motorcycle falls down
and rear fork breaks
off.
rear fork
The strike and shake
to rear wheel is too
big.
The road is bad and
the strike and shake
to rear wheel are too
big.

Section 9 Rear Fork

Maintenance of Rear Fork
trouble description of trouble description of
component
Rear fork is distorted. Motorcycle runs
towards one side and
comfort,stability and
safety are influenced.
Rear fork breaks Motorcycle cannot
off. run normally.
The jointing of Rear The comfort,stability
fork breaks off.
and safety of riding
decline.
T h e d u s t s e a l o f The seal of bearing
bearing cover of rear cover or bearing of
fork is worn. rear fork is bad.
Check rear fork
repair method
motorcycle
Correct or replace
rear fork.
Joint or replace rear
fork.
J o i n t r e a r
fork.
Replace dust seal
of rear fork bearing
cover.
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