Portland Community College | Portland, Oregon

Course Number:
DST 112
Course Title:
Caterpillar Hydraulic Fundamentals
Credit Hours:
Lecture Hours:
Lecture/Lab Hours:
Lab Hours:
Special Fee:

Course Description

This course is designed to teach the basic hydraulic fundamentals used in Caterpillar products, to identify and state the function of the various values used in Caterpillar hydraulic systems, to identify and state the function of vane pumps, gear pumps and piston pumps, to disassemble and assemble hydraulic components, to identify and state the function of ISO hydraulic symbols and to trace the oil flow and state the operation of various hydraulic systems. DST 110 and DST 111. Prerequisites: Provide a dealer letter indicating secured internship at a participating Caterpillar Dealership. Audit available.

Intended Outcomes for the course

Upon completion of this course, the students will be able to:

·         Explain and demonstrate basic hydraulic fundamental principles

·         Explain and demonstrate the effects of flow through an orifice

·         Explain the operation of the gear pump, vane pump, and the piston pump

·         Disassemble, identify, and assemble the components of the gear pump, vane pump, and the piston pump

·         Identify the components and explain the operation of the simple relief valve, the pilot operated relief valve, the flow control valve, the pressure reducing valve, the pressure differential valve, the check valve, the makeup valve, the sequence valve, and the directional control valve

·         Identify the components and explain the operation of single acting cylinders and double acting cylinders

·         Use the basic hydraulic training unit to build open and closed-center hydraulic systems

·         Identify and explain ISO hydraulic symbols

·         Trace oil flow through ISO hydraulic schematics

·         Trace oil flow and explain the operation of the pilot operated implement system

Course Activities and Design

          This is an outcome-based course utilizing a lecture/lab format. This course includes videos, assignments, demonstrations, lectures and hands on learning. Course will be taught using Caterpillar equipment and curriculum.

Outcome Assessment Strategies


·            Multiple choice, true/false, fill in the blank, short answer and essay testing

·            Hands-on practical testing

·            Daily lab assignments as defined by Caterpillar Curriculum / weekly and term projects

·            Attendance

·            Work ethics

Course Content (Themes, Concepts, Issues and Skills)


·         Safety and Hydraulic Training

·         Hydraulic Principles

·         Hydraulic System Components

·         Pilot Operated Hydraulic System

·         Practice Safety

·         Learn and practice personal safety

·         Learn and practice facility safety

·         Learn and practice equipment safety