Rear Brake Disc Inspection

Brake Disc Inspection

Before this inspection, brake pads must be removed.
Check disc surface for scratches in wearing parts. Scratches on disc surface noticed at the time of specified inspection or replacement are normal and disc is not defective unless they are serious. But when there are deep scratches or scratches all over disc surface, replace it. When only one side is scratched, polish and correct that side.
Rear brake disc thickness "a"
Standard: 16 mm (0.63 in.)
Limit: 14 mm (0.55 in.)





Use wheel nuts (1) and suitable plain washers (2) to hold the disc securely against the hub, then mount a dial gauge as shown in figure and measure the runout at 20 mm (0.79 in.) from the outer edge of the disc.

NOTE:
Check rear wheel bearing (wheel hub) for looseness before measurement.

Rear brake disc deflection
Limit: 0.1 mm (0.004 in.) max

Special Tool
(A): 09900-20607 (Dial gauge)
(B): 09900-20701 (Magnetic stand)





Inspection brake disc inside for wear as shown in figure. If inside diameter is exceeds the limit or uneven or stepped wear is excessive, replace it with new one.
Rear brake disc inner diameter "a"
Standard: 200 mm (7.87 in.)
Limit: 201 mm (7.91 in.)