Disassembly Of Motorcycle; Cleaning Of Components; Parts Inspection - ZONGSHEN ZS250GY-3 Service Manual

（1）Disassembly of Motorcycle
Disassembly is a very important part during repair.The method of disassembly will directly influence the
quality and efficiency of repair.If components broken or blocked caused by unproper disassembly,it will not
only expand the repair range,but also will delay the repair period.Seriously,it will lead to the disassembly
stop.The basic principle of disassembly is the order and direction opposite to those of installation.
Normally,the order is from outside to inside,from up to down,from big to small.When disassembling,pay
attention to the store environment and order to avoid damnification and confusion.
The order and method of disassembly is not absolute.Different motorcycle has different order and
method of disassembly.You can refer to the following introduction of disassembly,installation and
maintenance.
The basic principle of disassembly of Engine and other components is the same as principle of
whole motorcycle.The order and method of disassembly is different because of different structure and
characteristic of different component.Pay more attention to the store environment and order for all
disassembled parts are components.
Pay attention to the following items when disassembling motorcycle and components:
[1]The components which have high requirement for position should check its position mark first when
disassembling.If the mark is not clear,please re-make a mark.
[2]When dismantling the components which are too tight,please use the special tools.If you have none
special tools,support the motorcycle with some wooden or soft metal,then hammer the right place with
gluey hammer to avoid component damage.
[3]When dismantling the assembly of front/rear shock absorber and front/rear wheel,support motorcycle
with main stand.Avoid motorcycle falling down to hurt people or damage the components.
[4]Put the components which are dismantled in order.Do not put those components directly on the
ground.Such as spray components,chromeplate components and high precision components.
[5]The nuts and bolts which are dismantled should be stored carefully,which also can be installed on
the original place,but don't tighten them.
[6]The components which are only dismantled by special tools,please operate as regulation.Please
energize equally and pay attention to the direction.
[7]When dismantling components,please choose suitable tools,energize equally and pay attention to
direction to avoid component damage.
[8]The brake pads which are dismantled should be stored separately,which are also forbidden to
contact luboil,otherwise it will lead to brake failure.
[9]When there are some difficulties to dismantle because of the rust of screw thread components,you
can dip the components in gas for several minutes,then dismantle them.
[10]When dismantling gaskets,you should be much careful to avoid damage.
（2）Cleaning of Components
After the components are dismantled,they must be adhibited some oil or carbon deposit.Clean them to
help maintenance and installation.You can choose gas,coal oil and cleaning liquid to clean.The cleaning
method is adopted according to the speciality of components.
[1] Oil Stain Cleaning
Cool cleaning and heat cleaning are two methods for metal parts.Use gasoline or coal oil as
detergent,put the metal parts into detergent and scrub them by brush,which is called cool cleaning .Use
aqueous alkali as detergent,put metal parts into detergent ,heat up to 79℃～90℃ and immerse for 10min
～15min,then take out the metal parts and clean,which is called heat cleaning.
[2] Carbon Deposit Removing
To remove the carbon deposit on component,we can use mechanical method or chemical method.
Mechanical method is that scrape deposit with bamboo-scraper or spade and clean them with gasoline.
Immerse the component,brush the carbon deposit off and clean them with hot water,which is called
chemical method.
（3）Parts Inspection
Inspect the parts after cleaning.The purpose for inspection is to check whether the parts need
to be repaired or replaced.There are three methods,i.e.direct inspection,instrument inspection and
troubleshooting.
[1] Direct Inspection
Direct inspection is to check and judge the condition of parts by individual sensation instead of
instrument.It is a simple and feasible method,which is widely used for maintenance.
5