Plan of Study

Diesel & Heavy Equipment - Western Equipment Dealers Association Technician Training

Associate in Applied Science (88 credit hours)

Departmental Requirements: 54 credit hours
DHER 1113 Internship I
A cooperative agreement between industry and education allows students to utilize and refine skills previously learned in their educational process. All work is performed in accordance with industry standards and guidelines, and supervised by industry and school representatives. Lab. Prerequisites: Student must have successfully completed all previous core and academic courses as listed in the program Information Guide, have a minimum 2.0 institutional GPA, a valid driver’s license or Division Chair or designee approval.
DHER 1123 Fundamentals of Maintenance
An introduction to the skills and knowledge required by all service technicians including: precision measurement; environmental and safety regulation compliance; safety and personal protection equipment; fastener identification; hand and power tool identification, use and safety; lifting and blocking; torque wrench use; tapping, threading, and thread inserts. Students receive forklift operation training and testing, and demonstrate the ability to follow written instructions, complete business forms and perform basic math skills. Includes a review of the OSUIT Student Rights and Responsibilities. Theory/Lab.
DHER 1133 Pre Delivery & Preventive Maintenance
Includes a review of pre-delivery, preventive maintenance (PM) and the responsibilities of the service technician to ensure that all PM items are performed to a benchmark standard. Students review pre-delivery and PM standards established by equipment manufacturers and associations, and use manufacturer service and maintenance software and literature to determine proper pre-delivery and PM procedures, as well as oil sampling etc. They perform walk around inspections, pre-delivery inspections, test coolant, and learn proper disposal methods for used oil, filters, coolant, batteries, etc. Introduce correct machine operation, specifically related to safety precautions listed in the operators manual, as well as regulations for safe machine transportation to include tie down, flagging, permitting and weight distribution. Theory/Lab.
DHER 1143 Principals of GPS Applications
An explanation of how the GPS system works, sources of errors, and methods used for improving the basic accuracy of the system, including Differential GPS. The wide range of GPS agricultural applications is introduced and the main types and features of various GPS receivers are discussed. Students identify proper manufacturer terminology used in GPS applications. Theory/Lab.
DHER 1213 Internship II
A cooperative agreement between industry and education allows students to utilize and refine skills previously learned in their educational process. All work is performed in accordance with industry standards and guidelines, and supervised by industry and school representatives. Lab. Prerequisites: Student must have successfully completed all previous core and academic courses as listed in the program Information Guide, have a minimum 2.0 institutional GPA, a valid driver’s license or Division Chair or designee approval.
DHER 1223 Wiring Circuits, Charging & Starting Systems
Introduces electrical laws and principles, and includes the use of digital volt/ohm meters, amp probes, wiring diagrams and electrical schematics, wire and connector repair methods, and semiconductors. Students learn to diagnose, maintain, and repair electrical circuits, charging circuits, and starting circuits. Emphasis is on diagnostics, preventive maintenance, and correct repair procedures. Theory/Lab.
DHER 1233 Hydraulic Principles
A study of the fundamentals, theory and application of mobile hydraulic principles. Students locate and identify machine components from schematics; draw and read schematics; and identify fittings, seals and components used in hydraulic systems on agricultural and construction equipment. Pascal’s Law is used to calculate energy-work-power relationships. Hydraulic principles and operation of pumps, control valves, actuators, fluid conditioners used on modern equipment are covered, as well as failure analysis, diagnostics and reconditioning of hydraulic components. Theory/Lab.
DHER 1313 Internship III
A cooperative agreement between industry and education allows students to utilize and refine skills previously learned in their educational process. All work is performed in accordance with industry standards and guidelines, and supervised by industry and school representatives. Lab. Prerequisites: Student must have successfully completed all previous core and academic courses as listed in the program Information Guide, have a minimum 2.0 institutional GPA, a valid driver’s license or Division Chair or designee approval.
DHER 1323 Electronic Systems
The student is required to use diagnostic testing as specified by manufacturer software, literature, troubleshooting charts and wiring diagrams to complete required service, repair, or replacement procedures on agricultural and construction equipment electronic systems. Students identify, locate, service, test and repair connectors, sensors, actuators, switches and control modules, and use onboard diagnostic systems, T-adapter Kits, Digital Volt/Ohm Meters, electrical repair kits, crimper tools and the EST service tool. Theory/Lab. Prerequisite: DHES 1223.
DHER 1333 Hydraulic Systems
Designed to teach the systems operation and the testing, adjusting, maintenance and repair procedures for pilot operated hydraulic systems, load sensing pressure compensated hydraulic systems, electro-hydraulic systems and hydrostatic systems specific to agricultural and construction equipment. Students identify system components and discuss their operation and application, and identify different systems and troubleshoot live units, trace the oil flow through the systems and state the systems operation and application. Students use onboard diagnostic systems, T adapter Kits, Digital Volt/ Ohm Meters, flow meters, pressure gauges, and hydraulic schematics tools to diagnose hydraulic system malfunctions. Theory/Lab. Prerequisite: DHES 1233.
DHER 2413 Internship IV
A cooperative agreement between industry and education allows students to utilize and refine skills previously learned in their educational process. All work is performed in accordance with industry standards and guidelines, and supervised by industry and school representatives. Lab. Prerequisites: Student must have successfully completed all previous core and academic courses as listed in the program Information Guide, have a minimum 2.0 institutional GPA, a valid driver’s license or Division Chair or designee approval.
DHER 2416 Engines & Fuel Systems
An introduction to engine terminology, operating principles and maintenance; engine systems are examined along with diagnostic, repair and maintenance procedures. The student is given an understanding of the theory, operation, troubleshooting and repair of diesel engine intake, exhaust and fuel systems used in equipment. The function and operation of various types of fuel systems, fuel system maintenance and basic troubleshooting is covered. The application of repair procedures for engines is emphasized. Disassembly, parts evaluation and reusability, failure analysis, assembly, tune-up procedures, and troubleshooting are covered, along with the proper use of the EST service tool. Safety, special tool use, and the use of service publications are stressed. Theory/Lab.
DHER 2512 Mobile Air Conditioning
A study of the theory, application, and repair of mobile air conditioning and refrigeration systems. Emphasis is on preventive maintenance, design, failure analysis, troubleshooting, proper repair and refrigerant recovery recycle methods. Theory/Lab. Prerequisite: DHES 1223.
DHER 2513 Internship V
A cooperative agreement between industry and education allows students to utilize and refine skills previously learned in their educational process. All work is performed in accordance with industry standards and guidelines, and supervised by industry and school representatives. Lab. Prerequisites: Student must have successfully completed all previous core and academic courses as listed in the program Information Guide, have a minimum 2.0 institutional GPA, a valid driver’s license or Division Chair or designee approval.
DHER 2514 Power Train
Discussion of the basic components, operations, maintenance, diagnostics with the EST service tool and the repair of power train systems used in agricultural and construction equipment using proper special tooling. The basic components, couplings, clutches, manual transmissions, torque converters, and power shift transmissions, hydrostatic transmissions, differentials, brakes, and final drives are included, as well as hydraulically driven machines. Theory/Lab.
DHER 2603 Yield Monitoring, Variable Rate & Auto Steer Diagnostics
Summarizes how GPS integrates with guidance systems, yield monitoring systems, and variable rate technologies, also provides an explanation of the components of yield monitoring, variable rate, and auto steer systems along with the integration of machine electronics and hydraulics into those systems. System design, principles of operation, sensors, calibration, and system diagnostics are studied. Theory/Lab.
DHER 2633 Capstone
An applied research project identified during internships, as a work-based problem in need of improvement. Research caninclude improvements in diagnostic, service, and maintenance processes, technical support systems, customer service, etc. Advanced application of diagnostics principles relating to engine, power train, electrical systems, electronics, hydraulics, brakes and other equipment systems, and development of preventive maintenance systems are included. Theory/Lab.
General Education Requirements: 27 credit hours
For general education and interdepartmental course descriptions, see the School of Arts and Sciences courses.
Behavioral Sciences (3 credit hours)
PSYC 1113 Introductory Psychology
PSYC 2313 Psychology of Personal Adjustment
SOC 1113 Introductory Sociology
English (6 credit hours)
ENGL 1033 Technical Writing I
ENGL 2033 Technical Writing II
ENGL 1113 Freshman Composition I
ENGL 1213 Freshman Composition II
History (3 credit hours)
HIST 1483 U. S. History To 1865
HIST 1493 U. S. History Since 1865
Mathematics (3 credit hours)
MATH 1513 College Algebra
MATH 2003 Business Mathematics
Philosophy (3 credit hours)
PHIL 1213 Ethics
Political Science (3 credit hours)
POLS 1113 U. S. Government
Speech (3 credit hours)
SPCH 1113 Introduction to Speech Communications
Interdepartmental Requirements: 7 credit hours
General Technologies (7 credit hours)
BADM 1113 Introduction to Business
GTGE 1111 College Cornerstone
CS 1013 Computer Literacy and Applications
GTCT 1183 Welding

* Option available for careet technology center students in approved cooperative alliance programs.