Title: Inspect the belts, tensioners, and pulleys.
Course: Diesel Equipment Technology I (20107-I) > Section: Preventive Maintenance and Inspection: Servicing the Engine

Inspection should include

- visually checking belts for cracks, tears, or uneven wear
- visually checking pulleys for physical damage or cracks, excessive groove wear, and ensuring that mounting bolts are torqued
- ensuring the belt tensioner is moving freely
- checking the belt tension with a belt tension gauge
- checking A/C compressor drive belts, pulleys, and tensioners; verify proper belt alignment.

ASE 1: VI. Heating, Ventilation, and Air Conditioning: B. Refrigeration System Components (P-1)

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

Process/Skill Questions:

- What is the number one reason belts fail prematurely?
- How does the belt tensioner work?
- How would one set the belt tension if a belt tension gauge is not available?