Title: Check the operation of engine compression exhaust brake.
Course: Diesel Equipment Technology I (20107-I) > Section: Preventive Maintenance and Inspection: Servicing the Air Induction and Exhaust System

Checking should include

- activating the compression brake solenoids, with the engine running, either by the switch in the cab or with the electronic diagnostic tool
- recording the findings.

ASE 1: I. Diesel Engines: H. Engine Breaks (P-1)

Process/Skill Questions:

- What happens if a compression brake fails to activate?
- Why is the engine running while activating the compression brake solenoids?