PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDING
LUBRICATION INSTRUCTIONS Continued
Remove bushings and bushing-type bearings by pressing them out. Use a suitable arbor press or special tools.
It may be necessary to remove bushings in blind holes with a saw, or by using a narrow cap chisel.
Install bushings or bushing type bearings by aligning them in casting or retaining cage. Press bushing or
bushing-type bearings into place with suitable arbor press or with special tools.
OIL SEALS. Oil seals must be replace when thin feather edge is damaged, or when seal material is brittle.
Press damaged oil seal from casting. Be careful not to damage bore.
When oil seal bore is damaged so an oil tight seal is impossible, replace casting or adapter. Remove slight
nicks, burrs, and scratches with crocus cloth (WP 0080 00, Item 1) dipped in cleaning compound
(WP 0080 00, Item 49).
Install new oil seal in casting bore or adapter using suitable oil seal replacement tool.
INSERTS. Replace insert when threads are stripped or when insert is cracked or loose.
Drill and remove damaged insert from casting.
Install new insert in casting using suitable replacement tool.
Install plugs in armor mounting inserts, as required.
Install setscrews in hull armor mounting screw holes, as required.
GREASE SEALS, PREFORMED PACKING, GROMMETS, AND GASKETS. Seals, preformed packing,
grommets, and gaskets should be replaced when removed unless otherwise stated in the maintenance task. They
should not be reused.
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 oversize, 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 0080 00, Item 1).