DSL 130 Diesel Technology Introduction to Hydraulics

Lecture Hours: 2
Lab Hours: 8
Credits: 6

Covers fundamentals of hydraulics in theory and shop practice. Provides a solid background in application of hydraulics in the trucking and heavy equipment industry. Applies hydraulic principles, maintenance, and repair. Work on open and closed center systems, fixed and variable displacement pumps, linear and rotary actuators, pressure and flow controls, and directional valves.

Prerequisite: DSL 120 and DSL 121 each with a grade of C or better; or consent of instructor.
Concurrent: DSL 131.
Student Learning Outcomes:

Diagnose failures and research the failure symptoms in service manuals.
Disassemble, inspect, reassemble, and test hydraulic components and understand the relationship between component failure and hydraulic system operation.
Research new products hydraulic systems.
Apply their knowledge of how hydraulic system operate.
Work safely and the proper use of PPE’s in all work areas.

Content Outline

Fundamentals of hydraulics
- Research vehicles service information, verify placement of equipment safety labels.
- Inspect hoses, connections, routing, protection and determine needed action
Hydraulic system components
- Identify hydraulic components, purge and bleed a system
- Check fluid levels, take fluid sample and determine needed action
- Read schematics, perform pressure, temperature, flow, and cycle test
Hydraulic reservoirs
- Identify types of filtration systems, applications, and flow direction
- Service filters and breathers, inspect causes of contamination, insect reservoirs, sight glass, vents, caps, mounts, valves, screens, supply, and return lines
Hydraulic pumps
- Identify pump failures, noise, temperature, flow, and leakage issues and determine needed actions
- Determine pump type, rotation, drive system
- Prime and bleed a pump, inspect pump inlet and outlet for restrictions or leaks
Hydraulic actuators
- Identify actuator mounts, frame components, hardware for cracks and damage
- Remove and replace an actuator