8) Insert new stud in drum hole and rotate it slowly to assure serra-
tions are aligned with those made by replaced bolt.
INSPECTION
Inspect drum for cleanliness. Check its braking surface for wear by
measuring its inside diameter.
Drum inside diameter “a”
Standard : 180 mm (7.09 in.)
Limit
: 182 mm (7.17 in.)
Whenever brake drums are removed, they should be thoroughly
cleaned and inspected for cracks, scores, deep grooves.
Cracked, Scored, or Grooved Drum
A cracked drum is unsafe for further service and must be replaced.
Do not attempt to weld a cracked drum. Smooth up any slight
scores. Heavy or extensive scoring will cause excessive brake lin-
ing wear and it will probably be necessary to resurface drum brak-
ing surface.
If brake linings are slightly worn and drum is grooved, drum should
be polished with fine emery cloth but should not be cut.
NOTE:
When drum is removed, visually inspect wheel cylinder for
brake fluid leak. Correct leaky point, if any.
INSTALLATION
1) Before installing brake drum, check that outer diameter of brake
shoes is shorter than 180 mm (7.08 in.). If it is not so, adjust it
to shorter than 180 mm (7.08 in.) by turning adjuster.
2) Install brake drum (1) after making sure that inside of brake
drum and brake shoes are free from dirt and oil.
3) Install washer and axle castle nut.
4) Tighten castle nut (2) to specified torque.
Tightening Torque
(a) : 100 N·m (10.0 kg-m, 72.5 lb-ft)
BRAKES
5-25