DSL 131 Diesel Technology Heavy Duty Powertrains

Lecture Hours: 2
Lab Hours: 8
Credits: 6

Explores concepts in gear transmissions, differentials and clutches involved in the application of diesel-powered vehicles. Covers fundamentals of heavy-duty drivetrain in theory and shop practice. Prepares students to confidently work on power trains and their components and to diagnose and repair these systems in an industrial environment.

Prerequisite: DSL 120 and DSL 121 each with a grade of C or better; or consent of instructor.
Concurrent: DSL 130.
Student Learning Outcomes:

Disassemble, inspect, reassemble, and understand the power flow of transmissions.
Remove, disassemble, reassemble, and install clutches.
Repair and maintain power trains and their components.
Diagnose failures and research the failure symptoms in service manuals.
Work safely and the proper use of PPE’s in all work areas.

Content Outline

Heavy duty clutches
- Inspect/adjust clutches, linkage, bushing, brackets, levers
- Service standard transmissions
- Inspect master cylinder fluid level, check system for leaks, bleed system
Perform inspection on single-disc and two-plate clutch systems
- Inspect pilot bearing and release bearing for damage, inspect clutch brake and adjust for proper operation
- Basic gearing concepts
- Calculate gear ratios
- Standard transmissions
Remove single counter shaft transmission and calculate gear rations
- Check for leaks, fluid levels, seals, vents, mounts, linkage, and coolers
- Inspect speed components, function of the warning devices and lights, adjust shift forks, inspect bushings, interlocks, springs, and sleeves for proper operation and condition
Servicing standard transmissions
- Twin counter shaft disassembly and diagnosis, inspect lines, hoses, valves, regulators, and cylinder assemblies
- Inspect shaft gears, spacers, slingers, input and output shafts
- Transmission disassembly
- Inspect gauges, wiring, sensors, and sending units, inspect for proper operation of a manual transmission
Heavy duty drive shaft systems

Drive line angle measurement
Heavy duty drive axles
Driveline service and repair
Driveline diagnosis and troubleshooting