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TM 10-3930-673-20-2
3-7. REPAIR INSTRUCTIONS
a. General. Any repair procedure peculiar to a specific part or component is covered in the section or paragraph relating
to that item. After repair, clean all parts thoroughly to prevent dirt, metal chips or other foreign material from entering
any working parts.
CAUTION
Repaired items must be thoroughly cleaned to remove metal chips and abrasives to prevent them from
entering working parts of the ATLAS.
b. Castings.
(1)
All cracked castings will be replaced.
(2)
Only minor repairs to machined surfaces, flanges and gasket mating surfaces are permitted. Remove minor nicks,
burrs and scratches with:
(a)
Fine mill file.
(b)
Crocus cloth dipped in cleaning solvent.
(c)
Lapping across a surface plate.
(3)
Remachining of machined surfaces to repair damage, warpage or uneven surfaces is not permitted. Replace
castings.
(4)
Repair damaged threaded pipe plug or screw threads with a tap. Repair oversize holes with threaded inserts.
c. Bearings. Refer to TM9-214 for repair of bearings.
d. Studs. Replace all bent and stretched studs. Repair minor thread damage with a thread die. Replace studs having
stripped or damaged threads as outlined below:
(1)
Remove using a stud remover. Back studs out slowly to avoid heat buildup and seizure that can cause stud to
break off.
CAUTION
Refer to TM9-237, Welding Instructions, to avoid damage to castings if welding method is used.
(2)
If studs break off too short to use a stud remover, use a stud extractor to remove or use "welding method".

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