4. Remove screws holding caliper to axle weldment and remove caliper.
5. Inspect disc and friction pads according to 2-1.6.5.
6. Inspect caliper housing for evidence of fluid leakage. If present, caliper must be
replaced.
Installation
1. Connect brake line to housing assembly.
2. Bleed brake system as described in 2-1.10.
3. Install caliper in reverse order of disassembly.
1.5 REAR BRAKES
The rear brake is a two-shoe type hydraulic brake mounted on a backing plate that
serves as a dust shield. The brake assembly can be removed as a complete
assembly or partially disassembled while mounted on the axle housing.
Item numbers refer to parts illustration in chapter 4..
1.5.1 Rear Drum Brake Removal
See Parts Illustration in Chapter 4.
1. Raise tractor high enough off floor to provide adequate working space
underneath the frame. Support tractor with jack stands. Be sure that positioning
of jack stands does not interfere with work task.
2. Remove lug nuts and remove rear wheel assembly.
3. Remove fill/drain plug (AXLE-Rear, Wheel End, item 3) and drain lubricant from
wheel end.
4. Remove the 16 capscrews (item 1) from planetary spider assembly cover (item
4).
5. Using puller holes, remove planetary spider assembly cover (item 4).
6. Remove axle shaft and sun gear together (item 11, 12, & 13).
7. Remove planetary ring gear (item 14).
8. Remove hub bearing lock nut (item 16).
9. Remove hub and drum assembly (item 19 and 24). If necessary, manually
retract the brake shoes by loosening the star wheel adjuster.
IMPORTANT! When removing hub and drum assembly, always replace hub oil
seal.
AUGUST 31, 2008 CHAPTER 3 OVERHAUL
PAGE 6 1 GENERAL REPAIR
M100 Tow Tractor Manual No. 46052
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