Just Truck Transmissions: Medium & Heavy-Duty Truck Transmission Specialists in Union, NJ

Professional Truck Transmission Services in Union, NJ

For dependable medium and heavy-duty truck transmission repair, trust the experienced professionals at Just Truck Transmissions in Union, NJ. We specialize exclusively in commercial truck transmissions, working on both automatic and manual systems used in Class 4–8 trucks. Whether you need scheduled transmission service or are experiencing performance issues, our team is equipped to diagnose and repair the problem efficiently.

Truck Transmission Repair & Diagnostics at Just Truck Transmissions

Accurate Diagnostics for Commercial Truck Transmissions

Transmission problems in medium and heavy-duty trucks can stem from a variety of causes, including worn clutch components, low or contaminated transmission fluid, valve body issues, or drivetrain-related failures. In some cases, symptoms that appear to be transmission-related may originate from the differential or transfer case. Our technicians perform thorough inspections to accurately identify the root cause and recommend the correct repair solution.

Understanding Automatic Truck Transmissions

Automatic transmissions used in commercial trucks rely on complex hydraulic systems, clutch packs, torque converters, and gear sets to manage power delivery under heavy loads. Because of the demands placed on these systems, professional service is essential when performance issues arise.

Common Automatic Truck Transmission Issues:

• Gear Slippage Under Load
• Delayed or Harsh Shifting
• Transmission Fluid Leaks
• Loss of Drive or Complete Transmission Failure

Manual Truck Transmission Service

Manual transmissions in medium and heavy-duty trucks are built for durability, but they are still subject to wear over time—especially in demanding work environments. Clutch components, gear sets, and seals must be properly maintained to ensure reliable operation.

Common Manual Truck Transmission Problems:

• Worn or Damaged Gear Teeth
• Slipping or Jumping Out of Gear
• Seal and Gasket Leaks
• Failure Resulting in Vehicle Downtime

Comprehensive Commercial Truck Transmission Solutions

At Just Truck Transmissions, we provide complete transmission solutions for medium and heavy-duty trucks, including transmission rebuilds, replacements, maintenance services, and drivetrain-related repairs. Our shop is equipped to service commercial trucks used for hauling, delivery, construction, and fleet operations.

Extending the Life of Your Truck Transmission

Routine maintenance is critical for maximizing the lifespan of a commercial truck transmission. This includes monitoring transmission fluid condition, addressing minor leaks early, and servicing components according to manufacturer recommendations. Our team offers maintenance services designed to reduce downtime, improve reliability, and protect your investment.

Keep Your Truck on the Road

Serving Union, NJ, and the surrounding areas, Just Truck Transmissions is committed to keeping medium and heavy-duty trucks operating at peak performance. Contact us today to schedule professional truck transmission service you can rely on.