Arctic Cat 660 cc Service Manual page 254

5. Loosen the upper cap screws securing the caliper
halves; then remove the two cap screws, lock
washers, and flat washers securing the brake
caliper to the chain case.
6. Remove the caliper assembly from the engine
compartment.
DISASSEMBLING
1. Position a piece of wood between the pistons.
Using low-pressure compressed air, blow into the
caliper brake hose fitting to remove the brake
pistons.
! WARNING
Always wear safety glasses when using com-
pressed air.
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2. Remove the two cap screws securing the caliper
halves. Account for the small O-ring.
3. Remove the piston O-rings and discard.
CLEANING AND INSPECTING
NOTE: Whenever a part is worn excessively,
cracked, or damaged in any way, replacement is
necessary.
1. Inspect the brake pistons for gouges, cracks,
pitting, scuffing, or corrosion. If any of these
conditions exist, replace the piston.
2. Clean the piston outer surface by using a Scotch-
Brite pad and clean brake fluid as a cleaner.
! CAUTION
Do not use any sharp cleaning tool on the piston
surface as it may cause damage. Parts-cleaning
solvent must not be used as it can damage the
piston O-ring.
3. Inspect the brake caliper for gouges, cracks,
pitting, scuffing, or corrosion. If any of these
conditions exist, replace the caliper.
4. Clean the caliper inner wall surface using a soft
Scotch-Brite pad and clean brake fluid. Wipe
caliper wall clean with a clean rag and brake fluid.
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