X-90 (2WD) L4-1591cc 1.6L SOHC MFI (1997)
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Brake Drum: Testing and Inspection
1. Inspect the drum for cleanliness.
2. Check the wear of its braking surface by measuring its inside diameter.
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The inside diameter "a" (standard value) is 220 mm (8.66 inch.) and the service limit is 222 mm (8.74 inch.).
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Whenever the brake drums are removed, they should be thoroughly cleaned and inspected for cracks, scores and deep grooves.
CAUTION: A cracked, drum is unsafe for further service and must be replaced. Do not attempt to weld a cracked drum.
3. Smooth up any slight scores. Heavy or extensive scoring will cause excessive brake lining wear and it will probably be necessary to resurface
drum braking surface.
NOTE:
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If brake linings are slightly worn and the drum is grooved, the drum should be polished with fine emery cloth but should not be turned.
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When drum is removed, visually inspect wheel cylinder for brake fluid leakage. Correct leaky point, if any.
