Title: Inspect the transmission breather.
Course: Diesel Equipment Technology I (20107-I) > Section: Preventive Maintenance and Inspection: Servicing the Drive Train

Inspection should include

- following manufacturer guidelines
- removing the breather
- cleaning the breather
- checking for correct air flow.

Process/Skill Questions:

- Why might an obstructed breather vent possibly be the cause if oil is leaking from a wheel seal?
- When an oil seal was replaced but there were no signs that anything was wrong with the seal, why should the breather be removed and cleaned?
- Why should the breather be removed and cleaned more often for vehicles operating in road construction settings?