Title: Inspect pulleys, tensioners, and drive belts.
Course: Diesel Equipment Technology I (20107-I) > Section: Diesel Engines: Servicing the Cooling Systems

Inspection should include

- checking the manufacturer guidelines for belt tension and alignment
- measuring the pulley grooves for excessive wear
- checking against specification
- verifying the operation of the belt tensioner
- adjusting as needed.

ASE 3: I. Diesel Engines: E. Cooling Systems (P-1)

Process/Skill Questions:

- Why should belts be changed as a set vs. replacing individual belts?
- What tool should be used to verify proper belt tension?
- When does the manufacturer recommend the use of commercial “belt dressing” products?