Title: Inspect the U-joints, yokes, driveshafts, boots/seals, center bearings, and mounting hardware for looseness, damage, and proper phasing.
Course: Diesel Equipment Technology I (20107-I) > Section: Preventive Maintenance and Inspection: Servicing the Drive Train

Inspection should include looking for

- damaged bearing retainers or stamped straps
- loose bearing retainer bolts or strap bolts
- loose companion flange bolts or nuts
- loose or missing spring tabs or spring tab bolts
- damaged tangs on end fittings
- damaged or missing snap rings
- rotating bearing cups.

If any of these situations are evident, replacement of the components is necessary.

ASE 1: II. Drive Train: D. Driveshaft and Universal Joints (P-1)

Process/Skill Questions:

- What type of grease should be used? What are the differences in types of grease?
- Why are carrier bearings installed on long drive shaft locations?
- Why are carrier bearings enclosed in rubber?