This manual on bearings and seals is one of a series of power mechanics texts and visual aids for use in training for the servicing of automotive and off-the-road farm and industrial machines. Materials provide basic information and illustrations for use by vocational students and teachers as well as shop servicemen and laymen. Focusing on bearings, the first of two parts addresses topics such as types of bearings, loads on bearings, plain bearings (bushings), diagnosis of plain bearing failures, trouble shooting of plain bearings, anti-friction bearings, bearing capacities, types of ball bearings, types of roller bearings, types of needle bearings, maintenance of anti-friction bearings, diagnosis of failures, lubrication of anti-friction bearings, installatlon of anti-friction bearings, and trouble shooting of anti-friction bearings. Part 2 focuses on seals and addresses topics such as types of seals, how seals are selected, dynamic seals, radial lip seals, exclusion sea1s, clearance seals, ring seals, face seals, compression packings, molded packings, diaphragm seals, static seals, nonmetallic gaskets, metallic gaskets, static O-rings, engine cylinder head gaskets, sealants, hardening-type sealants, nonhardening sealants, and tape sealants. Each part concludes with test questions. Answers to the test questions are appended. (A supplementary set of 35mm color slides is also available--see availability note.) (LRA)