Admit it: You love the rumbling roar of a strong diesel engine and have a passion about working on heavy duty equipment and machinery.

Our program prepares students to diagnose and service diesel powered trucks and off-highway equipment, training future technicians how to analyze and repair diesel engines, transmissions, hydraulics, and all other related operating and controlling systems. WMCC offers the only Diesel Heavy Equipment program in New Hampshire and the only Associated Equipment Distributor (AED) accredited program in New England. 

Prepared for the Workplace

The Associate in Science degree program in Diesel Heavy Equipment Technology prepares students to diagnose and service diesel powered trucks and equipment. Students will learn to use a systems approach to analyze and repair diesel engines, transmissions, brakes, hydraulics, related technologies and controlling systems. Extensive lab courses and a co-op experience are supported by rigorous coursework in physics, math, communications and social science. Shop safety, work habits, shop management and customer relations are also stressed.

Graduates of this program find employment at heavy truck and equipment dealerships, as well as forestry, agricultural and automotive dealerships whose lines include diesel-powered units. Students may also find employment in construction, forestry, trucking, skiing, marine service, power generation and other industries that use diesel-powered units.

Four Options

There are four options in this program. The On-Highway option prepares students to work on heavy-duty on-highway trucks. The Off-Highway option prepares students to work on large earth moving, agricultural, or forestry equipment. The Parts and Service Management option prepares students to work as parts and service consultants, as parts or service managers, or in general service management positions. A One-Year Certificate option is also available.

The diesel program is accredited through the Associated Equipment Distributors (AED) and is the only college in New England with the accreditation.

Students can expect to spend an additional $1500-2500 for tools.

Program available in Berlin.

First Year

Fall SemesterLecLabCr
DSL111WIntroduction to Diesel Heavy Equipment Technology202
DSL211WHeavy-Duty Power Trains334
DSL214WMobile Equipment Welding143
PHYS115WTechnical Physics324
 Semester Total 13917
Spring SemesterLecLabCr
DSL115WDiesel Power Systems334
DSL117WFuel & Emission Systems334
ENGL120WCollege Composition404
PHYS113WElectricity and Electronics324
PHYS215WFluid Dynamics324
 Semester Total 161020
Summer TermLecLabCr
DSL119WCooperative Education031
 Semester Total 001
 First Year Total   38

Second Year

Fall SemesterLecLabCr
DSL113WHeavy Duty Electrical Systems334
DSL216WMobile Hydraulics I233
DSL219WFailure Analysis303
 Social Science Elective303
 Semester Total 11613
Spring SemesterLecLabCr
DSL220WVehicle Inspection and Commercial Drivers License303
DSL222WMobile Hydraulics II*233
DSL226WElectronic Troubleshooting042
DSL227WHeavy-Duty Chassis Brake & Climate Control Systems435
ENGL211WProfessional Writing303
 Humanities Elective303
 Semester Total 12/137/1016
 Second Year Total   29
* Denotes Off-Highway Option
 Total for A.S. Degree = 67

Program Outcomes

Upon successful completion of this program, graduates will be prepared to:

  • Demonstrate knowledge of safe working practices in the workplace.
  • Demonstrate proficiency of written and oral communications skills.
  • Demonstrate workplace skills associated with customer relations and employee employer relations.
  • Demonstrate proficiency in the use of hydraulic and electric schematics.
  • Demonstrate skill in the diagnosis and repair of diesel engine, fuel, and emission systems.
  • Demonstrate skill in the diagnostics and repair of electrical and electronic systems associated with heavy equipment.
  • Demonstrate proficiency in the testing and repair of heavy equipment hydraulic systems.
  • Demonstrate skills in the diagnosis and repair of power train components to include standard and power shift transmissions, hydrostatic transmissions, torque converters, clutches and axles.
  • Demonstrate a practical knowledge of failure analysis practices and procedures.
  • Demonstrate proficiency in the diagnostics and repair of suspension, steering, undercarriage, and brake systems.
  • Demonstrate proficiency in the diagnosis and repair of heating and air conditioning systems associated with heavy equipment.

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67 Credits Required


of students qualify for financial aid