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TM-9-2330-326-14-P Semitrailer Tactical Drop Deck BreakBulk/Container Transporter 22-1/2 TON M871A3NSN 2330-01-458-6865 Manual

Remove Outer Bearing:

TM 9-2330-326-14&P

H-30. CR SCOTSEAL

PURPOSE

The purpose of this material is to help you reduce premature wheel-end failures by tracking down their

causes. To begin with, a CR wheel end system is made up of high quality parts designed for reliability and

long life. When a part doesn't reach its intended service life, it suffers premature failure. And this calls for

an investigation.

Tracking wheel end failure requires a planned, consistent approach to require and maintenance, like the

sample procedures shown here. Investigation damage to a CR Scotseal or Scotseal Plus wheel seal

requires taking the seal apart. In these unitized designs, the seal and sealing surface are inside, making it

easy, once the surface is exposed, to track what has happened.

Reading the failure modes of bearings and hub caps is simply matching up the visible damage to a short

list of causes. If questions arise that aren't covered here, contact your CR sales representative. We'll be

glad to provide further help.

For proper installation instructions on Scotseal, Scotseal Plus, bearings, and accessories, the following

materials are available; Fleet Self Study Guide (457935), Bearing Self Study Guide (457640), and Scotseal

and Scotseal Plus Installation video (458304).

PROCEDURE

Inspect for Indicati ons of Leakage:

Under vehicle inspection

Grease present past the seal.

Greasel contaminated hub, brake hardware, and brake shoes.

External leakage

Grease present around hup cap exterior.

Grease present on wheels and exterior axle areas by dust shields.

Disassembling the Wheel End:

WARNING

Block wheels. Support vehicle on stands.

Check condition of hub cap. Check flange.

Check bolts and hub flange area on drive axle.

Remove Hub Cap:

Check condition of lube

Cloudy or milky indicates water.

Shiny indicates bearing wear.

Gritty, sandy indicates contamination.

Smells burnt indicates overheating.

Check condition of fastening system

Verify end-play measurement before removing fastener.

Examine outer nut and return spring.