Disassembly And Maintenance Of Front Shock Absorber; Section 8 Shock Absorber - ZONGSHEN ZS250GY-3 Service Manual

Front shock absorber is the spring connecting part between front wheel and vehicle body.Rear shock
absorber mainly bear axial pressure of rear wheel.Both of them support the weight of the whole vehicle
body.During motorcycle running,it reduces the concussion and shake for motorcycle and rider,reduces the
pressure for components,prolongs the service lifetime of motorcycle and enhances the comfort,operation
and stability for rider.
1 The Structure and Working principle of Front/Rear Shock Absorber
[1]Front Shock Absorber
The front shock absorber of this motorcycle adopts compound of hydraulic pressure and spring.It
mainly consists of front shock absorber spring,seal ring,dustproof cover,piston ring,front shock absorber
pole,piston lever,buffer spring,one-way valve spring socket,one-way valve spring,one-way valve,one-way
valve socket,front shock absorber pipe and piston lever socket.
When the front wheel of motorcycle gets strike and shake,the front shock absorber pipe rises,the
damping oil flows up through the one-way valve and small holes on piston lever.The resistance power is
small at this time.When absorber pipe continues going up,the clearance between one-way valve socket
and the cone-shaped surface of piston lever becomes smaller and smaller,so that the resistance becomes
bigger,which avoids the bump of front shock absorber pipe and front shock absorber.When front shock
absorber pipe goes down for the returning of front shock absorber spring,the damping oil only can flow
from the small holes of piston lever because of the close of one-way valve,which causes a big resistance,so
that it reduces the shake of front shock absorber spring.
[2]Rear Shock Absorber
The rear shock absorber of this motorcycle adopts compound of hydraulic pressure and spring.
It mainly consists of upper tie-in,rubber cover,gasket,rear shock absorber spring,rear shock absorber
lever,piston,damper and lower tie-in.
Rear shock absorber mainly gets the axial pressure of rear wheel.When the rear wheel gets the strike
or shake for the road condition,rear shock absorber will compress and expand.The hydraulic pressure oil of
damper is forced to flow through the damping hole,so it reduces the shake of rear shock absorber spring.

2 Disassembly and Maintenance of Front Shock Absorber

[1]Check the effective stroke and performance of
front shock absorber,and check whether there is
leakage from front shock absorber.
CAUTION
Maintain front shock absorber in time if it
has some problems in order to ensure the riding
safety.
[2]D i s m a n t l e f o u r f i x e d b o l t o f f r o n t s h o c k
absorber，and remove the front shock absorber.

Section 8 Shock Absorber

Check
front shock
absorber.
Dismantle the
bolt of front shock
absorber.
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