ALLISON · ZF · HD AUTOMATICS · DIFFERENTIALS
Diesel Transmission & Drivetrain Repair
in Clackamas, OR.
Diesel engines produce more torque than gas engines—and your transmission and drivetrain need to handle it. At Rob’s Automotive Repair Center in Clackamas, OR, we specialize in diesel transmission and drivetrain repair for pickups, medium-duty trucks, and fleet vehicles. If your truck is slipping gears, overheating when towing, or having drivetrain problems, our ASE-certified technicians will get it back to reliable performance.
Why Choose Rob’s for Transmission & Drivetrain?
Diesel Transmission Experience
Hands-on expertise across Allison 1000, Ford TorqShift, RAM 68RFE/AS69RC, and heavy-duty manual gearboxes.
Advanced Diagnostics
Live data, pressure testing, and module reflashes to identify shift-quality, slip, or overheating issues quickly.
OEM-Grade Parts
Allison-approved fluids, OEM seals and clutches, and proven upgrades for heavy-duty applications.
Fleet-Friendly Turnaround
Priority scheduling for commercial customers — minimize downtime, maximize uptime.
What we cover.
Heavy-Duty Service for Diesel Trucks & Medium-Duty Vehicles
Diesel engines produce more torque than gas engines—and your transmission and drivetrain need to handle it. At Rob’s Automotive Repair Center in Clackamas, OR, we specialize in diesel transmission and drivetrain repair for pickups, medium-duty trucks, and fleet vehicles. If your truck is slipping gears, overheating when towing, or having drivetrain problems, our ASE-certified technicians will get it back to reliable performance.
Transmissions We Service
We work on both automatic and manual transmissions designed for diesel trucks, including: From preventive maintenance to full rebuilds, we keep your transmission ready for the job.
- Allison Transmissions – common in Duramax trucks and medium-duty applications
- Ford TorqShift Transmissions – in F-250, F-350, F-450 Super Duty trucks
- Ram Cummins Transmissions – 48RE, 68RFE, AISIN models
- Manual Clutches & Gearboxes – in older trucks and some medium-duty platforms
Common Diesel Transmission & Drivetrain Issues
We regularly diagnose and repair: Diesel trucks work hard—and our repairs keep them reliable on and off the job.
- Slipping gears or delayed shifts
- Overheating under load (especially when towing)
- Harsh or erratic shifting
- Torque converter failures
Clutch & Manual Transmission Service
For trucks with manual gearboxes and medium-duty diesel rigs, we provide: We install heavy-duty clutches built to withstand diesel torque and long-haul abuse.
- Clutch replacements & upgrades
- Flywheel resurfacing & replacement
- Hydraulic clutch system repairs
- Gearbox repairs & rebuilds
Preventive Maintenance for Diesel Transmissions
Regular service extends the life of your transmission and drivetrain. We recommend: By staying proactive, you avoid costly breakdowns and downtime.
- Fluid & filter changes with the correct spec fluid
- Transmission cooler inspections & upgrades
- Differential & transfer case service
- Fleet maintenance programs tailored to diesel trucks
READY WHEN YOU ARE