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.
Repair castings, forgings, and machined parts using the following instructions:
Refer to TC 9-237 for instructions on repairing minor cracked castings or forgings.
Drycleaning solvent P-D-680 is toxic and flammable. Always wear protective
goggles 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 flame or
Repair minor damage to machined surfaces with a fine mill file or abrasive cloth dipped in drycleaning
solvent (Item 4, Appendix D).
Replace any deeply nicked machined surface that could affect the operation of the Diesel Engine
Repair minor damage to a threaded capscrew hole with thread tap of same size, to prevent cutting the hole
HOSE AND TUBE TAGGING.
As soon as the first hose or tube is disconnected, write the number "1" on two tags. Secure one tag to the hose
or tube and the other tag to the nipple or fitting. After disconnecting the second hose or tube, write the number
"2" on two tags. Secure one tag to the hose or tube and the other tag to the nipple or fitting. Do the same for all
hoses and tubes.
Note which numbers you used, in pencil, on the art in this manual. This will help you retag properly when you
remove tags from some parts to perform cleaning and maintenance work.
Remove all tags when finished.
To prevent corrosion, apply a light coat of lubricating oil to metal parts after they are cleaned and before they are
Follow the torque values given in the maintenance procedures, which apply to unlubricated threads. If no torque value is
given, refer to Appendix E.