TM 9-2320-272-24-3
4-110. PARKING AND SERVICE BRAKEDRUM REPAIR
THIS TASK COVERS:
b. Inspection
a. Cleaning
INITIAL SETUP:
APPLICABLE MODELS
EQUIPMENT CONDITlON
All
Parking brakedrum removed (para. 3-223, 3-224,
3-460, or 3-461).
TOOLS
General mechanic's tool kit (Appendix E, Item 1) GENERAL SAFETY INSTRUCTIONS
Inside micrometer (Appendix E, Item 83)
Drycleaning solvent is flammable and toxic. Do
not use near open flame.
MATERIALS/PARTS
Keep tire extinguisher nearby when using
drycleaning solvent.
Drycleaning solvent (Appendix C, Item 71)
Do not use compressed air or a dry brush when
REFERENCES (TM)
working in areas of asbestos dust.
TM 9-2320-272-24P
Wear a fiber mask or respirator when working
around asbestos dust.
TM 9-4910-482-10
WARNING
Drycleaning solvent is flammable and toxic. Do not use near an
open flame and always have a fire extinguisher nearby when
solvents are used. Use only in well-ventilated places, wear
protective clothing, and dispose of cleaning rags in approved
container. Failure to do this may result in injury to personnel
and/or damage to equipment.
Do not use compressed air or a dry brush for cleaning when
working in areas where vehicle asbestos brake lining dust may
accumulate. Remove asbestos dust and other residue from these
areas using a soft bristle brush or cloth soaked with water.
Breathing asbestos dust may cause injury to personnel.
Wash parking brakedrum (1) or service brakedrum (2) with water and soft bristle brush. Allow to air-dry.
Clean with drycleaning solvent.
b. Inspection
1.
Inspect parking brakedrum (1) or service brakedrum (2) for warps and cracks. Replace if warped or
cracked.
2.
Inspect parking brakedrum (1) or service brakedrum (2) for scores or pits. If scored or pitted,
measure inside diameter at several positions. Replace parking brakedrum (1) if inside diameter is
greater than 13.5 in. (342.9 mm). Replace service brakedrum (2) if inside diameter is greater than
16.625 in. (422.28 mm).
3.
Resurface brakedrum to remove scores and/or pits (TM 9-4910-482-10).
4.
If parking brakedrum (1) or service brakedrum (2) was resurfaced, measure inside diameter.
Replace if inside diameter exceeds limits.
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