PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDING
LUBRICATION INSTRUCTIONS Continued
Remove burrs from splined parts with a soft honing stone.
Replace parts that are worn or have twisted, cracked, or broken splines.
Chase threads with a used tap or die. A new tap may cut undersize, while a new die may cut
THREADED PARTS. Repair all parts that have stripped or damaged threads by chasing threads with a used tap or
die. Replace parts that cannot be repaired.
Retaining rings should be replaced when removed unless otherwise stated in the maintenance task. They
should not be reused.
Some retaining rings are beveled on one side. When installing this type of ring, the beveled side must face the
part to be retained.
SPRINGS. Discard springs that have defects. Load and height inspection data, where needed, are given in
SHAFTS AND SPINDLES.
Replace shafts and spindles that show signs of wear, binding, scores, cracks, burrs, or clogged oil passages.
Remove obstructions with compressed air or by probing with soft wire.
Remove burrs and minor surface defects with a crocus cloth (WP 0122 00, Item 11).
Replace corroded or burned parts and parts which show signs of mildew.
Tighten loose connections.
Replace cracked or broken wires, circuit cards, relays, and connectors.
Replace cracked, torn, or burned insulation and heat shrink tubing.
11. Welding safety precautions and welding procedures are given in the following steps. Special instructions are covered in
Wear clothing such as leather or heavy denim. Do not wear clothing with loose pockets, trouser cuffs, or short
or rolled up sleeves.
Do not expose bare skin to welding arc.
Do not look directly at welding arc unless you are wearing a welding hood.
Wear flash goggles or tinted safety glasses (No.2) in welding area.
Disconnect power source before changing parts or making equipment repairs.
Do not touch mechanism or any part of the electrode.