Hyundai Sonata 1991 Shop Manual page 30

FRONT DISC BRAKE PADS
MAINTENANCE SERVICE
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Check for fluid contamination and wear. Replace complete set
of pads if defective.
NOTE:
If a squealing or scraping noise occurs from the brake during
driving. check the pad wear indicator contacting the disc. the
brake pad should be replaced.
CAUTION
The pads for the right and left wheels should be replaced at
the same time. Never "split" or intermix brake pad sets.
All pads must be replaced as a complete set.
Thickness of pad lining "A" [Limit] 2.0 mm (0.079 in.)
REAR DRUM BRAKE LININGS AND REAR WHEEL
CYLINDERS
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1. Remove the brake drum and check the thickness of brake
shoe lining for wear. Check the automatic brake adjusting
system by hand to see if it operates smoothly. Also see if
the gears are in proper mesh with each other. To assure
smooth functioning, apply a very thin coat of grease to the
friction surface of adjuster and link shaft.
2. Inspect the wheel cylinder boots for evidence of a brake fluid
leak. Visually check the boots for cuts, tears or heat cracks.
(A slight amount of fluid on the boot may not be a leak, but
may be preservative fluid used at assembly.)
1) Checking the brake shoes for wear.
Thickness of lining "B" [Limit] 0.8 mm (0.031 in.)
1. Visually check the level of the brake fluid in the reserve tank
of the master cylinder.
2. The level should be between the "MAX" and "MIN" marks.
3. If the level is lower than the "MIN" marks, add fresh brake
fluid up to the "MAX" mark.
CHECKING THE BRAKE FLUID LEVEL
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10-18