Driveline Repair
That clunk when you shift into drive is not personality. It is a U-joint, a slip yoke or a differential asking for attention before it lets go at speed.
Mechanical & Driveline
Between the transmission and the pavement
The driveline takes everything the engine makes and delivers it to the wheels, and its failures announce themselves early: clunks on engagement, vibrations that build with speed, whines from the differential, leaks at the pinion seal. We diagnose by symptom and measurement, balance and phase driveshafts correctly, and repair differentials with proper setup: backlash, preload and pattern, not guesswork.
Tandem axles, power dividers, inter-axle differentials and wheel-end assemblies are the core of this work, and it takes heavy tooling and a lift rated for a loaded chassis. That equipment is exactly why owner-operators and fleets bring driveline jobs here instead of to a general repair shop.
Driveline work we handle
Driveline: scope of work
- U-joints, slip yokes and center bearings
- Driveshaft repair, balance and replacement
- Differential diagnosis and rebuild
- Pinion and axle seal replacement
- Wheel bearings and hub assemblies
- Heavy truck tandem and power divider work
Questions we hear
Straight answers
What does a failing U-joint feel like?
A clunk on engagement or direction change, then a vibration that grows with speed. It is one of the cheapest driveline parts, and one of the most destructive when it finally separates. Replace it at the clunk stage.
My differential whines on the highway. Is it safe?
A whine means wear, and wear in a differential compounds. It rarely strands you today, but the price rises with every week of metal circulating through the gear oil. Get it evaluated soon.
Do you rebuild heavy truck differentials?
Yes, including tandem axle sets and power dividers, with JASPER remanufactured differentials as an option when replacement beats repair.
Keep looking
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JASPER remanufactured diesel engines, transmissions and differentials, backed by a nationwide transferable warranty.
See this serviceWhere we serve
Driveline across Northeast Florida
One shop at 3190 W Beaver St in Jacksonville, with customers from every direction: