TM 5-4310-451-14
4-21.
INSPECTION INSTRUCTIONS (Con’t).
d.
Inspect castings, forgings, and machined metal parts for the following:
(1)
Machined surfaces for nicks, burrs, raised metal wear, and other damage.
(2)
Inner and outer surfaces for breaks and cracks.
e.
Inspect bearings in accordance with TM 9-214.
4-22.
REPAIR INSTRUCTIONS.
a.
Repair castings, forgings, and machined metal parts using the following instructions:
(1)
Repair minor cracked castings or forgings in accordance with TM 9-237.
(2)
Repair minor damage to machined surfaces with a fine mill file or an abrasive cloth (Item 10,
Appendix E).
(3)
Replace any deeply nicked machined surface that could affect the assembly operation.
(4)
Repair minor damage to threaded capscrew holes with thread tap of same size to prevent cutting
oversize.
b.
After repair, thoroughly clean all parts to prevent dirt, metal chips, and other foreign matter from entering any
working parts.
4-23.
TAGGING PARTS.
a.
Use marker tags (Item 40, Appendix E) to identify all electrical wires, fuel, oil, and coolant lines, and any
other parts which may be hard to identify or replace later. Fasten tags to parts during removal by wrapping wire fasteners
around or through parts and twisting ends together. Position tags to be out of the way during cleaning, inspection, and
repair. Mark tags with a pencil, pen, or marker.
b.
Whenever possible, Identify electrical wires with number of terminal or wire to which it connects. If no
markings can be found, tag both wires or wire and terminal, and use same identifying mark for both. If you cannot tag wire
because it must fit through small hole or you cannot reach it, write down description of wire and the point to which it
connects or draw a simple diagram on paper. Be sure to write down enough information so you will be able to properly
connect wires during assembly. If you need to identify a loose wire, look for identifying numbers near end of wire, stamped
on a permanent metal tag. Compare this number to wire numbers on appropriate electrical schematic.
c.
Identify fuel, oil, and coolant lines whenever you are taking off more than one line at the same time. Mark
tags with points to which lines and hoses must be connected. If it is not obvious which end of a line goes where, tag each
end of line.
d.
Identify and tag other parts as required by name and installed location.
4-24.
ELECTRICAL GROUND POINTS.
Many electrical problems are the result of poor ground connections. You can ensure that ground
connections are good by performing the following steps:
WARNING
Although master battery switch must be on and battery ground cable connected to test electrical
circuit voltage, turn off master battery switch or disconnect battery ground cable before doing
resistance tests or replacing parts. This will keep you from getting shocked and prevent damage
to parts and equipment.
(1)
Remove hardware connecting ground cable terminal lug to ground point.
4-20
