MANUALS · SERVICE BRAKES [35] · страница 96 из 140 · Открыть оригинал PDF ↗

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FRONT DISC BRAKE ROTOR INSPECTION

CAUTION

When servicing disc brakes, it is necessary to exercise caution to keep the disc brakes within the'
allowable service values in order to maintain normal brake operation.

Before re-finishing or re-processing the brake disc surface, the following conditions should be checked:

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Inspection items	Remarks
Scratches, rust, saturated lining materi- als and wear	If the vehicle is not driven for a certain period, the sections of the liningwill become rusty, causing discs that are not in contact with noise and shuddering: If grooves resulting from excessive disc wear and scratches are not removed prior to installing a new pad assembly; there will momen- tarily be inappropriate contact between the disc and the lining (pad)
Run-out or drift	Excessive run-out or drift of the discs will increase the pedal depression resistance due to piston knock-back:
Change in thickness (parallelism)	If the thickness of the disc changes, this will cause pedal pulsation, shuddering and surging:
warping (flatness) Inset or	Overheating and improper handling while servicing will cause inset or warping

FRONT BRAKE DISC RUN-OUT CHECK

Remove the caliper support; then raise the caliper assembly
upward and secure bY using wire_

2Place a dial gauge approximately 5 mm (.2 in:) from the outer
circumference of the brake disc, and measure the run-out of
the disc.

Limit: 0.1 mm (0.0039 in )

If the measurement exceeds the limit, change the relative
position of the hub and brake disc, and measure the run-out
again. If the result still does not fall within the limit, check the
run-out of the hub, and replace either the hub or disc, which-
ever isappropriate_

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