procedures in TB SIG 222 must be
G E N E R A L . This
cedures. Special repair and cleaning pro-
cedures are provided, as required, in the in-
ing the component, test it for proper
dividual maintenance instructions.
Follow torque values given throughout
this manual. When no torque value is
Complete disassembly is not always
necessary to make a repair. Exercise
vided in appendix E of this manual, to
good judgement to keep disassembly and
prevent damaging parts.
reassembly to a minimum.
Repair or replace unserviceable parts and
hardware. Always replace packings,
Wire brush metal parts to remove rust
gaskets, and seals with new parts.
Remove burrs with a stone or file. Re-
move burrs on closely fitted mating sur-
faces by lapping the surfaces with lap-
ping grinding compound (item 13, appx
Dry cleaning solvent (SD2) is toxic
and flammable. Wear protective
goggles and gloves and use only
in well-ventilated area.
cloth (item 6, appx C) or emery cloth
(item 7, appx C). Use the method that
Clean metal parts with dry cleaning sol-
will not damage the surface being
vent (SD2) (item 10, appx C). Metal or
cleaned. Crocus cloth (item 6, appx C)
fiber brushes may be used to apply
should be used to remove corrosion and
cleaning solvent and to remove softened
rust from polished surfaces. Make sure
or dissolved material. Hand scraping with
that critical dimensions are not altered
metal scrapers may be used to remove
when using crocus cloth.
Soak oily or greasy metal parts in a tank
chaser or die.
containing dry cleaning solvent (SD2)
(item 10, appx C). The time parts must
When welding is authorized, procedures
be in solvent varies with the type and
in TM 9-237 must be followed. Welds
amount of material to be removed.
must be inspected for cracks.
Do not use solvent to clean electrical in-
Bearings should be inspected and main-
sulation, wires, cables, or wiring
tained following procedures in TM 9-214.
harnesses. Clean these parts by wiping
with a damp cloth. Use a mild soap solu-
Clean electrical ground contacts with
tion if necessary. Dry immediately with
crocus cloth (item 6, appx C) or emery
clean dry cloths. Clean contact points
cloth (item 7, appx C). Make sure ground
with flint abrasive paper (item 1, appx C )
connections are tight.
and dust thoroughly after cleaning.
trical wiring with insulation tape (item
20, appx C). When soldering is required,