Lesson 1 - Chain Drives


Installing and aligning shafts; Mounting the drive sprockets and chain; Test running; Lubrication; PM; Chain storage; Troubleshooting; Safety

Learning Objectives:
– List four types of chain drives.
– Describe the procedure for aligning the driving and driven shafts.
– Distinguish between bored sprockets and bushed sprockets and tell how each is mounted.
– Tell how a drive chain is mounted on the sprockets.
– List four methods of lubrication for chain drives.
– Explain both no-load and full-load test running procedures.
– Describe the causes of fatigue breaks, tensile breaks, rapid chain wear, roller wear, and side plate spreading.

Lesson 2 - Belt Drives


Installing and aligning drives; Mounting sheaves and pulleys; Installing and adjusting V-belts; Idler sheaves; Flat, positive belt drives; Maintenance

Learning Objectives:
– List the three general types of belt drive and explain how they work.
– Tell how sheaves and pulleys are mounted and aligned on their shafts.
– Explain why all the belts in a multi-belt drive must be replaced at the same time.
– Describe two ways of taking up slack in a stretched V-belt.
– List three ways of splicing the ends of a flat belt together.
– Differentiate between the way positive-drive belts and other types of belt transmit power.

Lesson 3 - Open Gear Devices


Aligning and preparing shafts; Handling and mounting gears; Lubricating open gearing; Preventive maintenance; Troubleshooting; Safety

Learning Objectives:
– Explain why open gearing requires special provisions for feeding lubricating oil to its parts.
– Describe how to align parallel shafts, intersecting right-angle shafts, and nonintersecting right-angle shafts.
– Describe the procedure for aligning worm gearing.
– List some of the problems a visual inspection of gearing can uncover.
– Describe the appearance and causes of wear, abrasion, corrosion, scoring, pitting, spalling, cold flowing, fatigue breaks, and cracked rims and

Lesson 4 - Enclosed Gear Drives


Preparing the foundation; Installation; Lubrication; Test running; PM; Troubleshooting

Learning Objectives:
– Tell how an enclosed gear drive should be mounted on the floor.
– Tell how an enclosed gear drive should be mounted on the framework of a driven machine.
– Describe the two methods of lubrication used in enclosed gear drives.
– Explain what should be done during the initial run-in, the one-week check, and the thirty-day check.
– List four steps you should take to protect an enclosed gear drive that is to be put into storage.
– Identify typical nameplate data.

Lesson 5 - Drive Couplings


Installing and aligning shaft couplings; Expansion allowance; Lubrication; No-load testing; Installing universal joints; PM

Learning Objectives:
– List three purposes of a coupling.
– List the three basic types of coupling.
– Explain how to check both the angular and the parallel alignment of shafts.
– Tell how a dial indicator is used in precision coupling alignment.
– Calculate shim thickness required to align couplings in an angular plane.
– Distinguish between couplings that need lubrication and those that do not.
– Describe how shaft couplings, spacer couplings, floating shaft couplings, and universal joints are installed.