Chery Tiggo. Manual — part 356
Inspection
Visually inspect brake pads for uneven lining wear. Also inspect for excessive lining deterioration. Check the clear-
ance between the tips of the wear indicators (if equipped) on the pads and the brake rotors. If a visual inspection
does not adequately determine the condition of the lining, a physical check will be necessary. To check the amount
of lining wear, remove the disc brake pads from the vehicle. Measure the brake pad minimum thickness. Brake pads
must be replaced when usable material on a brake pad lining measured at its thinnest point measures one millimeter
or less. Replace both disc brake pads (inboard and outboard) at each caliper. It is also necessary to replace the pads
on the opposite side of the vehicle as well as the pads failing inspection to maintain proper braking characteristics.
If the brake pad assemblies do not require replacement, be sure to reinstall the brake pads in the original position
from which they were removed.
ON-VEHICLE SERVICE
UNIT REPAIR
Front Brake Caliper
Disassemble
Before disassembling the brake caliper, clean and inspect it.
WARNING!
• Under no condition should high pressure air ever be used to remove a piston from a caliper bore. Personal
injury could result from such a practice.
• Do not place face or hands near caliper and piston if using compressed air pressure to remove piston. Do not
use high pressure.
1. Place a wooden block in the caliper.
2. If necessary, apply low pressure compressed air to
the caliper fluid inlet in short spurts to force the pis-
ton out.
3. Remove the piston from the caliper.
4. Remove the dust boot from the piston and discard
it.
CAUTION:
Do not use a screwdriver or other metal tool
for seal removal. Using such tools can scratch
the bore or leave burrs on the seal groove
edges.
5. Using a soft tool such as a plastic trim stick (1),
work the piston seal (2) out of its groove in caliper
piston bore. Discard the used seal.
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LTSM120010
BESM120003
12
6. Clean the piston bore and drilled passage ways
with alcohol or a suitable solvent. Wipe it dry using
only a lint-free cloth.
Inspection
1. Inspect both the piston and bore for scoring or pitting. Bores that show light scratches or corrosion can usually
be cleared of the light scratches or corrosion using crocus cloth.
2. Remove deposits on the piston using a soft brass wire brush or a rough shop towel. Do not clean piston with a
polishing or emery cloth because this will damage the chrome-plated surface. Replace the piston if the chrome
plated surface is damaged. If the piston is jammed or if the cylinder bores are scored or rusted, replace the
complete brake caliper. Remove small, light rust spots in the cylinder bore with a polishing cloth.
3. Inspect the caliper guide sleeves for smooth oper-
ation.
Repair
and
grease
caliper
sleeves
as
necessary.
Assemble
NOTE :
• Always have clean hands when assembling a brake caliper.
• Always use fresh, clean brake fluid when assembling a brake caliper.
• Never use an old piston seal.
• Bleed the brakes as necessary.
UNIT REPAIR
LTSM120021
LTSM120012
Perform the following procedure to assemble the brake caliper:
1. Lubricate the caliper piston, piston seals and piston
bore with clean brake fluid.
2. Install the new piston seal into the seal groove.
NOTE :
Verify seal is fully seated into seal groove and not
twisted.
3. Install the new dust boot on the caliper piston and
seat the dust boot lip into the piston groove.
4. Stretch the dust boot rearward to straighten the
boot folds, then move the boot forward until the
fold snaps into place.
UNIT REPAIR
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LTSM120015
12
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