Chery A21 2005, Service Manual, Page: 97 / 475

CHERY A520 SERVICE MANUAL CHASSIS
5
2) Take out the guide pin.
Note: When taking out the guide pin, you
should avoid damaging the dust cover. If the
dust cover is damaged, you should replace it
immediately; otherwise, the piston alignment
return shall not occur, leading to accidents.
When mounting, you should equally paint
lubricant onto the guide pin, but should not put
the lubricant onto the brake lining. If lubricant
grease splashes onto the brake lining, you
should clean it and use sand paper to grind it
slightly.
3) Dismount the brake lining to check its
thickness. If one side of the brake lining is
worn, you should not replace it. Only the
thickness of brake disc is equal to or less
than the specified minimum thickness, can
you be allowed to replace it with new
brake
lining. Check the specified
minimum thickness of brake lining, and
clean it.
Do not paint lubricant onto the
backing plate of brake pad.
Note: When replacing brake lining, please
replace it in pair.
4) Dismount the dust seal ring and check its
damage. If necessary, you should replace
it. Clean the contact surface of brake
piston, and paint a thin layer of noise
silencing paste onto it.
5) Dismount the piston. Use a board to shield
off the piston, put the board between
pistons and insert a pad at one end.
Fill
compressed air into the connecting hole to
force off the piston. Put guard board (hard
wood, etc) onto the notch of brake caliper
in order to protect the piston.
Note: Do not use your finger to touch the piston
in order to prevent your finger from being
clamped.
The dismounting of brake caliper piston is
strictly limited. Only professional personnel or
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