i. 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.
8. Bleed brake system. Refer to Chapter 2.
9. Road test the tractor.
1.8 PARKING BRAKE (C-6 TRANSMISSION)
1.8.1 Removing Brake Shoes and Pads
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 and slide drive shaft back and away from park brake
assembly.
5. Remove from park brake cover and remove cover.
6. Remove springs holding brake shoes in assembly and remove shoes and pads
together.
1.8.2 Inspecting and Lubricating Brake Assembly.
Inspect all parts of parking brake assembly for wear and damage, particularly brake pads
and linkage. Lubricate all moving parts. Be careful to keep brake shoes and pads clean
and free of grease, oil and gasoline.
1.8.3 Repair and Replacement.
Replace all parts which are worn excessively or damaged brake drum for scoring and
replace if drum has excessive grooving.
1.8.4 Reassembly
1. Position brake shoes in drum and fasten with springs.
2. Put cover over brake assembly and fasten with attaching screws.
3. Slide drive shaft forward and attach to park brake assembly.
4. Turn knob on park brake handle out as far as possible without removing it.
AUGUST 31, 2008 CHAPTER 3 OVERHAUL
PAGE 14 1 GENERAL REPAIR
M140 Tow Tractor Manual No. 46054
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