Master Onsite Drivetrain Repair With Hands-On Training
AxleTech, Meritor, Kessler and Sisu Off-Highway Training
Real Training on Real Equipment
Heavy Duty Transaxle provides exclusive off-highway drivetrain training you won’t find anywhere else. Our expert-led courses cover Meritor, Kessler, and other leading OEM components, giving your team the knowledge and skills to keep heavy equipment moving.
How We Train
Flexible, Field-Tested Formats That Work for You
Train your way: hands-on heavy equipment at our fully-equipped Puget Sound lab (with group rates available) or onsite at your facility with a custom curriculum.
View Sample Curriculum
Who We Train
Built for the Mechanics Who Keep Your Equipment Moving
Our off-highway training is designed for mechanics and fleet operators in ports, oilfields, agriculture, forestry, intermodal yards, and material handling. We specialize in planetary tandem axles, differentials, transmissions, and off-highway equipment repair for Kenworth C500, Western Star, Peterbilt, International, Taylor, Kalmar, and Toyota machinery. If you’re responsible for keeping heavy equipment running, this program is built for you.
THE TRAINING PROGRAM THE INDUSTRY IS MISSING
- Unparalleled Expertise
Decades of hands-on experience, industry respect, and no B.S. — training from Marty Smith, the guy everyone calls when they’ve got a tough problem. - Comprehensive, Equipment-Focused Training
In-depth instruction on planetary axles, transmissions, brake systems, safety, tooling, and equipment-specific procedures for Kenworth, Western Star, Taylor forklifts, and more. - Affordable and flexible
Get high-impact training that fits your budget and your schedule. - Real Certifications, Real Credibility
Our credentials carry weight — built for the field, recognized by the pros, and designed to advance your career.
Meet Marty Smith
A proud veteran, Marty brings discipline and precision from his military service to decades of expertise in heavy-duty planetary axle and transmission repair. Known nationwide as the go-to expert, he’s solved the toughest mechanical challenges in ports, oilfields, and industrial fleets. Marty is dedicated to sharing his real-world knowledge to help mechanics and fleet operators keep heavy equipment running strong and safe.
WHAT OUR CUSTOMERS SAY
“We spent a few days at HD Transaxle and were provided with a training experience that covered all our areas of concern. The training and the solutions provided to us will ensure our equipment is operating properly for years to come.
Steve, Peter, Marty, Tyler, Mari and the rest of staff’s hospitality and professionalism is second to none. They treated our group like we were part of the team, they shared a wealth of quality information, and we are sure to be customers for life.“
Mark Robillard | Aurora Mining
⭐️⭐️⭐️⭐️⭐️ Read our Google reviews
Unlock Your Team’s Full Potential
Request more information about our certified training programs and start building the skills that keep your operation moving.