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TM 9-2330-398-24
3-5.
GENERAL MAINTENANCE PROCEDURES (continued).
2.
After cleaning bearings, dry them with clean compressed air. Take care to prevent spinning the bearings when
using compressed air jet.
3.
Dip cleaned bearings in clean engine oil and immediately wrap them in a lint-free cloth (Item 25, Appendix C) to
protect them from dust and other foreign matter.
3-6.
SPECIFIC PROCEDURES.
a.
WELDING
1.
Refer to TM 9-237 for welding instructions and materials. All welds must reflect good workmanship and approved
welding procedures. Welds must be secure and free from cracks, excessive spatter, and obvious defects.
2.
Read and observe all safety precautions in the Warning Summary before performing any welding operation.
b.
SURFACE PROTECTION
1.
Clean and repaint all surfaces on which paint has deteriorated or become damaged.
2.
Do not paint grounding studs or electrical harnesses or leads.
3.
Paint exterior of vehicle in olive drab in accordance with TT-E-529 or TT-E-485.
c.
REPAIR OF DAMAGED THREADS
1.
When determined feasible by inspection, damaged threads should be repaired by retapping, using a thread die or
a thread restorer file.
2.
Tapped holes for screw thread inserts that have mutilated threads may be repaired by either of the following
methods:
a.
Drilling and tapping hole oversize, then installing larger screw.
b.
Filling tapped hole by welding, then redrilling and tapping hole to original size.
d. REMOVAL OF BURRS, SCRATCHES, AND RAISED METAL
WARNING
Dryleaning solvent P-D480 I toxic and flammable. Always wear protective goggle and gloves, and use only in a
well-ventilated area. Avoid contact with skin, eyes, and clothes, and DO NOT breathe vapors. DO NOT use near
open flames or excessive heat.
1.
Use fine mill file, soft stone, or crocus cloth (Item 5, Appendix C) dipped in drycleaning solvent (Item 12, Appendix
C) to remove burrs, scratches, or raised metal.
3-27
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