INSPECTION - TM-9-2320-270-20-10278

TM9-2320-270-20-1

INSPECTION

The reason for parts inspection is to find out which parts can be used and which must be replaced.

Specifications and tolerances are given in this manual, but sometimes, you, the inspector must make

the decision which parts should be replaced.

To find out if you can use a part that is otherwise in good condition, check the clearance between

mating surfaces. If clearance is within tolerance, reinstall part.

Inspect castings for wear, distortion, cracks and breaks in and around drilled and tapped holes. Look

for damaged threads.

Carefully look at all machined surfaces and polished areas. Use a strong light to shine across polished

surfaces to check for score marks, cracks, breaks and too much wear.

Inspect gears for cracked, nicked and chipped teeth. Look for metal to metal abrasion, pitting, and

wear. When a gear is found to be defective, replace it and its mating gear.

SERVICE REPLACEMENT KITS

Many service replacement parts are available in various undersize and/or oversize, as well as

standard sizes. Also, service kits for reconditioning certain parts and service sets which include all of

the parts necessary to complete a task are available.

TAGGING PARTS

Use cardboard tags with wire fasteners (item 18, appendix C) to identify all electrical wires;

hydraulic, fuel, oil, and coolant lines; and any other parts which may be hard to identify or place

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 felt-tip marker.

Identify electrical wires with number of terminal or wire to which it connects whenever possible, to

avoid confusion. If no markings can be found, tag both wires or wire and terminal, and use the same

identifying mark for both. If you cannot tag a wire because it must fit through a small hole or you cannot

reach it, write down a description of the wire and the point to which it connects, and draw a simple

diagram on paper. Be sure to write down enough information so you will be able to connect wires

properly during assembly.

If you need to identify a loose wire, look for identifying numbers near the end of the wire, stamped on a

permanent metal tag. Compare this number to the wire numbers on the appropriate electrical

schematic in Appendix F, Electrical System (page F-l).

Identify hydraulic, fuel, coolant, and oil lines whenever you are taking off more than one line at the

same time. Mark tags with the points to which lines and hoses must be connected. For example,

"Bulkhead adapter to scarifier cylinder tube and adapter" might be written on the tag for a hydraulic

hose. If it is not obvious which end of a line goes where, tag each end of the line.

Identify other parts as necessary by name and installed location.

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