Maintenance Of Direction Pole; Section 6 Steering System - ZONGSHEN ZS250GY-3 Service Manual

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Table Of Contents

Table of Contents

The direction of motorcycle is operated by steering handlebar.The steering handlebar connects with

direction pole.It sees the frame as the center and run the front shock absorber and operate the front wheel

through the rotation of direction pole.

1 The Structure and Working Principle of Steering System

[1]Steering handlebar

The right steering handlebar of motorcycle is the throttle control grip,Control oil flow rate.The right

holding lever is the front brake lever.Also,there are left and right controlling switches,rear view mirrior and

choke switch respectively installed on the left and right handlebar.

[2]Direction pole assembly

Direction pole assembly is the important part of steering system.It mainly consists of direction

pole,lower connecting board,bearing and bearing ring.Normally,the direction pole is jointed with lower

board(wholly called direction pole) and installed within the frame pipe.The weight of motorcycle and rider

transfers to front wheel through the direction pole.However,the weight caused by the strike of road for the

front wheel transfers to motorcycle body through the direction pole. Therefore,direction pole not only must

bear the big loads strike,but also ensure the flexible turning during running.

2 Disassembly and Maintenance of Steering System

In order to make motorcycle keep a good operation,you should maintain the steering system termly.For

the first time,disassemble vehicle after 1500km,and then disassemble it every 600km.Check the abrasion

of inner and outer bearing and rolling ball.Replace them if necessary.When replacing rolling ball,you must

replace it completely.Don't mix the new parts with the old ones.

The maintenance of direction pole should stress on bearing.If the bearing is always lack of lubrication

and adjusting nut is loose,the clearance of bearing will be

too big,so that the steering handlebar will shake during

running,which influences the stability and safety of

motorcycle.On the other hand,if the bearing is damaged or

adjusting nut is too tight,the turning resistance of steering

handlebar will be too big,so that the steering handlebar

will be locked,which is hard to be operated or cannot be

operated.Therefore it influences riding safety.

Support motorcycle with main stand and make front

wheel off the ground.Rotate the front fork and front shock

absorber and check whether the bearing is loose.Turn

the steering handlebar and check whether the bearing

is flexible.Adjust it if the bearing is too loose or tight.

First,unscrew the locknut of direction pole,rotate adjusting

nut and check the tightness of bearing.Re-tighten the

locknut until the bearing is normal.

The cause,trouble description and repair method of direction pole

Table 4-6

Component

Cause

Description

Adjusting nut is

too tight.

bearing ring

Bearing ring

is too worn or

damaged and

has pit,press

mark and spit.

B e a r i n g i s

bearing

worn,distorted or

damaged.

direction pole Direction pole is

distorted.

Section 6 Steering System