Yamaha XS750, Manual, Page: 81 / 154

D. Brake Inspection and Repair
Recommended Brake Component Replacement
Schedule:
Brake pads.
. . . . . . . . . . .
.As required
Piston seal, dust seal
. . . .
.Every two years
Brake hoses.
. . . . . . . . . .
.Every four years
Brake fluid
. . . . . . . . . . .
.Replace only when
brakesare disassembled
1. Replace caliper piston if it is scratched.
6.
Check for wear and deflection of disc (front
and rear).
2. Replace any brake pad worn beyond limits.
Replace brake pads as a set.
CHECK WEAR ON DISC BRAKE PAD
PAD THICKNESS
WEAR LIMIT LINE (RED)
I
Wear limit: front and rear
5.5mm (0.18 in.)
See Caliper Pad Replacement procedure for
parts to be replaced when pads are replaced.
3.
Replace piston and dust seals if damaged. Re-
place seals every two years.
4. Inspect master cylinder body. Replace if
scratched. Clean all passages with new brake
fluid.
5. Inspect brake hoses. Replace every four years
or if cracked, frayed or damaged.
Maximum deflection: 0.15mm (.006 in.)
Minimum disc thickness: 6.5mm (0.26 in.)
I f disc
is
worn beyond minimum thickness or
deflection exceeds specified amount, replace
disc.
E. Brake Reassembly
1. All internal parts should be cleaned in new
brake fluid. Internal parts should be lubricated
with brake fluid when installed.
2. Caliper Reassembly
Replace the following parts whenever a caliper
is
disassembled: bleed screw
and
cap, boot
bushing, piston seal,
dust
seal, retaining ring.
BLEED SCREW
BUSH BOOT
RETAINING RING
a.
Install piston seal and piston. Place caliper
cylinder into caliper frame.