d. Start engine.
e. Turn wheels, lock-to-lock, twice.
f. Stop engine.
g. Discharge accumulator by depressing brake pedal five times.
h. Repeat steps (a) through (g).
i. If foaming occurs, stop engine and wait for 1 hour for foam to dissipate.
j. Repeat steps (a) through (g).
6. Re-connect pedal linkage. Tighten locknuts to 70 ft-lbs torque.
7. Adjust brake pedal. Refer to chapter 2, section1.
8. Bleed brake system. Refer to chapter 2, section1.
9. Road test the tractor.
1.8 PARKING BRAKE (C6 TRANSMISSION)
1.8.1 Removing Brake Shoes and Shoe Linings
1. Block wheels, release park brake and loosen park brake cable by turning handle
counterclockwise.
2. Raise rear wheels of tractor using a hoist and jack stands to allow enough room
under tractor for the work task.
3. Disconnect park brake cable from parking brake lever.
4. Remove drive shaft mounting capscrews and slide drive shaft back and away
from park brake assembly.
5. Remove capscrews from park brake cover and remove cover.
6. Remove springs holding brake shoes in the assembly and remove the shoes and
shoe linings together.
1.8.2 Inspecting and Lubricating Brake Assembly
Inspect all parts of parking brake assembly for wear and damage, particularly brake
shoe linings and linkage. Lubricate all moving parts. Be careful to keep brake shoes
and shoe linings clean and free of grease, oil and gasoline.
1.8.3 Repair and Replacement.
Inspect all parts of parking brake assembly for wear and damage, particularly brake
shoe linings and linkage. Lubricate all moving parts. Be careful to keep brake shoes
and shoe linings clean and free of grease, oil and gasoline. Brake shoe lining kits are
available to repair brake shoes.
1.8.4 Reassembly
1. Position brake shoes in drum and fasten with springs.
AUGUST 31, 2008 CHAPTER 3 OVERHAUL
PAGE 14 1 GENERAL REPAIR
M100 Tow Tractor Manual No. 46052
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