Yamaha YZF-R1 2007 Service Manual

FRONT BRAKE4-28EAS22360DISASSEMBLING THE FRONT BRAKECALIPERSThe following procedure applies to both of thebrake calipers.1. Remove:• Brake caliper pistons “1”• Brake caliper piston seals “2”▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼a. Secure the right side brake caliper pistonswith a piece of wood “a”.b. Blow compressed air into the brake hosejoint opening “b” to force out the left sidepistons from the brake caliper.WARNINGEWA4C81005• Never try to pry out the brake caliper pis-tons.• Do not loosen the bolts “3”.c. Remove the brake caliper piston seals.d. Repeat the previous steps to force out theright side pistons from the brake caliper.▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲EAS22390CHECKING THE FRONT BRAKE CALIPERS1. Check:• Brake caliper pistons “1”Rust/scratches/wear → Replace the brakecaliper pistons.• Brake caliper cylinders “2”Scratches/wear → Replace the brake cali-per assembly.• Brake caliper body “3”Cracks/damage → Replace the brake cali-per assembly.• Brake fluid delivery passages(brake caliper body)Obstruction → Blow out with compressedair.WARNINGEWA13600Whenever a brake caliper is disassembled,replace the piston seals.EAS22410ASSEMBLING THE FRONT BRAKE CALI-PERSWARNINGEWA13620• Before installation, all internal brake com-ponents should be cleaned and lubricatedwith clean or new brake fluid.• Never use solvents on internal brakecomponents as they will cause the pistonseals to swell and distort.Recommended brake component replace-ment scheduleBrake pads If necessaryPiston seals Every two yearsBrake hoses Every four yearsBrake fluidEvery two years andwhenever the brake isdisassembledManuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keysemail: info@motomatrix.co.uk