GENERAL MAINTENANCE INFORMATION.
General. This section provides general repair methods and cleaning procedures. Special repair and
cleaning procedures are provided, as required, in the individual maintenance instructions.
Complete disassembly is not always necessary to make a repair. Exercise good judgment to keep
disassembly and assembly to a minimum.
Repair or replace unserviceable parts and hardware. Always replace packing, gaskets and seals with
Remove burrs with a stone or file. Remove burrs on closely fitted mating surfaces by lapping the
surfaces with abrasive grade compound.
Remove corrosion or rust with crocus or emery cloth. Use the method that will not damage the surface
being cleaned. Crocus cloth should be used to remove corrosion and rust from polished surfaces. Make sure that critical
dimensions are not altered when using crocus cloth.
Repair damaged threads with a thread chaser or die.
When welding is authorized, procedures in TM 9-327 must be followed. Welds must be inspected for
Bearings should be inspected and maintained following procedures in TM 9-214.
Clean electrical ground contacts with crocus cloth or emery cloth. Make sure ground connections are
Repair chafed, broken or damaged electrical wiring with insulation tape, electrical, specification MIL-HH-
I-595. When soldering is required, procedures in TB SIG-222 must be followed.
(10) After locating the malfunction and repairing the component, test it for proper function.
Wire brush metal parts to remove rust and corrosion.
Dry cleaning solvent P-D-680, used to clean parts is toxic and flammable.
Wear protective goggles and gloves and use only in a well-ventilated
area. Avoid contact with skin, eyes and clothes. Do not breathe the
vapors. Do not use near open flame or excessive heat. Do not smoke
while using it. Failure to do so may cause INJURY. If you become dizzy
while using cleaning solvent, immediately seek fresh air, and if
necessary, medical attention. If contact with skin or clothes is made,
flush thoroughly with water. If the solvent contacts your eyes, wash with
water immediately and obtain medical help.