1986-1987 Honda TRX350 FourTrax 4X4, 1987-1989 TRX350D Foreman 4X4 Service Manual, Page 196Get this manual
BRAKES Inspect the wheel cylinder bore and the pistons for scoring or grooving Inspect the piston cup and O-ring for wear or damage CAUTION
(2) PISTON (1) BOOT
(3) ADJUSTER
Clean all parts, excluding the bOals, throughly with BRAKE FLUID onlyBlow OUI passages with compressed airApply rubber grease 10 [he lips of the boots and silicon grease to the adjuster(5) CYLINDER
Measure the wheel cyl inder 1.0 SERVICE LIMIT: 19.12 mm (0.753 in) Measure the wheel cyl inder piston 0.0SERVICE LIMIT: 18.81 mm (0.741 in)
ASSEMBLYI NSTALLA TION