9.17
BRAKES
9
Disc Replacement
1. Remove the front brake caliper (see “FRONT CALIPER
SERVICE”).
2. Remove wheel hub cotter pin, castle nut and washers.
3. Remove the wheel hub assembly from the vehicle and
remove the (4) bolts retaining the disc to the hub.
4. Clean the wheel hub mating surface and install new disc on
wheel hub.
5. Install new bolts and torque to 18 ft. lbs. (24 Nm).
6. Install wheel hub assembly, washers, and castle nut. Torque
castle nut to 80 ft. lbs. (108 Nm) and install a new cotter pin.
7. Install the front brake caliper (see “FRONT CALIPER
SERVICE”).
8. Follow bleeding procedure outlined earlier in this chapter.
9. Field test unit for proper braking action before putting into
service. Inspect for fluid leaks and firm brakes. Make sure
the brake is not dragging when pedal is released. If the brake
drags, re-check assembly and installation.
Brake Disc Thickness
New .188” (4.78 mm)
Service Limit .170” (4.32 mm)
Brake Disc Thickness Variance
Service Limit: .002” (.051 mm)
difference between measurements
Cotter
Pin
Washers
Nut
(4) Bolts
18 ft. lbs.
(24 Nm)
CAUTION
Always use new brake disc mounting bolts. The
bolts have a pre-applied locking agent which is
destroyed upon removal.
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