Usage:
start by:
a) remove rim and tire
1. Disconnect brake line (2) from brake head assembly (1).
2. Remove the bolts that hold the top anchor pins in position.
3. Install two 3/8"-16 NC forged eyebolts in the brake head assembly and fasten a hoist as shown.
NOTE: If necessary, push the brake linings from the wheel disc to remove the brake head assembly.
- 920-60 lb. (27 kg)
- 930-90 lb. (41 kg)
4. Remove bolts (3) that hold the brake head assembly to the axle housing. Remove brake head assembly (1). The weight of the brake head assembly is:
| NOTICE |
|---|
The two anchor pins and brake linings are free to fall out of the brake head assembly and must be held in position when it is removed or installed. |
5. Fasten a hoist to brake head assembly (1) with two 3/8"-16 NC forged eyebolts.
6. Put the brake head assembly in position on the machine and tighten bolts (3) to a torque of 225 ± 25 lb.ft. (300 ± 35 N·m).
7. Remove the forged eyebolts and hoist from the brake head assembly.
8. Push anchor pins (5) into the brake head assembly. Make sure there is .010 in. (.25 mm) or more distance between the anchor pins and wheel disc. Install bolts (4) to hold the anchor pins.
9. Connect brake line (2) to the brake head assembly.
10. Use tool (A) and remove (bleed) the air from the hydraulic brake system. See HYDRAULIC BRAKE SYSTEM SERVICING in TESTING AND ADJUSTING.
end by:
a) install rim and tire
Disassemble Brake Head Assemblies
start by:
a) remove brake head assemblies
1. Loosen bolts (2) that hold pins (3) in position and push pins (3) out to remove brake linings (1).
2. Remove bolts (5) and caps (4).
3. Remove four pistons (6) and the boots from the brake head assembly.
4. Remove the boots from the pistons and the seals from the piston bores.
Assemble Brake Head Assemblies
1. Install seals (1) in the four piston bores.
2. Install boots (2) in the piston bores with the lip of the boot in the groove of the bore.
3. Install the four pistons (3) in the bores of the brake head through the boots.
| NOTICE |
|---|
The ends of the pistons must be through the boots before the pistons are pushed into the bores or the damage to the boots will be the result. |
4. Use tooling (A) to push the pistons in the bores. Put the lip of the boots in the groove of the pistons.
5. Install the O-ring seals on the two caps (4) and install the caps on the brake head.
6. Put brake linings (5) in position and push pins (7) in to hold them. Tighten bolts (6) to hold the pins.
end by:
a) install brake head assemblies