Front Brake Components Inspection And Repair - Toyota Hilux Surf 1993 Owner's Manual

BRAKE SYSTEM – Front Brake – 4WD (S12 + 12 Type Disc)
INSPECTION AND REPAIR OF FRONT BRAKE
COMPONENTS
1. MEASURE PAD LINING THICKNESS
Standard thickness: 9.5 mm (0. 374 in.)
Minimum thickness: 1.5 mm (0.059 in.)
Replace the pads if the thickness is less than the mini–
mum (the 1.5 mm slit is no longer visible) or if it shows
sign of uneven wear.
2. MEASURE ROTOR DISC THICKNESS
Standard thickness: 20.0 mm (0.787 in.)
Minimum thickness: 18.0 mm (0.709 in.)
If the disc is scored or worn, or if thickness is less than
minimum, repair or replace the disc.
3. MEASURE ROTOR DISC RUNOUT
Measure the rotor disc runout at 10 mm (0.39 in.) from
the outer edge of the rotor disc.
Maximum disc runout: 0.09 mm (0.0035 in.)
If the runout is greater than maximum, replace the rotor
disc.
HINT: Before measuring the runout, confirm that the
front bearing play is within specification.
4. IF NECESSARY, REPLACE ROTOR DISC
(a) Remove the front axle hub.
(b) Remove the disc from the axle hub.
(c) Install a new rotor disc and torque the bolts.
Torque: 64 N–m (650 kgf–cm, 47 ft–Ibf)
(d) Install the axle hub and adjust the front bearing pre–
load.
BR–37