ASE T-Series Exam Guide
The ASE Medium-Heavy Truck Certification Tests, also known as the T-Series, identifies and recognizes those Medium and Heavy Truck Technicians who can demonstrate knowledge of the skills necessary to diagnose, service, and repair different systems of Class 4 through Class 8 trucks and tractors. Those who are certified in tests T2 – T8 are recognized as ASE-Certified Master Medium-Heavy Truck Technicians (T1 is not required).
T1 – Gasoline Engines
T2 – Diesel Engines
T3 – Drive Train
T4 – Brakes
T5 – Suspension & Steering
T6 – Electrical/ Electronic Systems
T7 – Heating, Ventilation & Air Conditioning (HVAC)
T8 – Preventive Maintenance Inspection
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