9.25
BRAKES
9
Caliper Installation (4x4, 6x6)
1. Install the rear caliper with the mounting bolts. Torque
mounting bolts to 18 ft.lbs. (24 Nm).
2. Install brake line banjo bolt. Torque banjo bolt to 15 ft. lbs.
(21 Nm).
3. Install the rear wheel and wheel nuts. Carefully lower the
vehicle.
REAR BRAKE DISC
Disc Inspection
1. Visually inspect disc for scoring, scratches, or gouges.
Replace the disc if any deep scratches are evident.
2. Use a 0-1"micrometer and measure disc thickness at 8
different points around perimeter of disc. Replace disc if
worn beyond service limit.
3. Mount dial indicator and measure disc runout. Replace the
disc if runout exceeds specifications.
4. Install brake line and tighten with a flare nut wrench.
5. Follow bleeding procedure outlined earlier in this chapter.
6. 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.
18 ft. lbs.
(24 Nm)
15 ft. lbs.
(21 Nm)
4X4
15 ft. lbs.
(21 Nm)
18 ft. lbs.
(24 Nm)
6X6
Brake Disc Thickness
New .150-.165” (3.81-4.19 mm)
Service Limit .140” (3.56 mm)
Brake Disc Thickness Variance
Service Limit .002” (.051 mm)
difference between measurements
Brake Disc Runout
Service Limit .010” (.254 mm)
Rear Brake Disc
Rear Brake
Measure
Thickness
Disc
Front View of Brake Disc