Our Services
Specialist gearbox repair and rebuild for manual and automatic transmissions. Every job diagnosed properly, repaired correctly, and backed by warranty.
Manual Gearbox Repair
We carry out full strip-down, inspection, and repair of manual gearboxes across all makes and models — from worn synchromesh rings and bearings to selector forks, input shafts, and seals. If it can be repaired, we'll repair it. If it needs a full rebuild, we'll tell you straight.
- Worn synchromesh diagnosis and replacement
- Bearing and shaft replacement
- Selector fork and linkage repair
- Oil seal and gasket replacement
- Clutch fork and release bearing inspection
- All makes and models covered
Automatic Gearbox Repair
Automatic transmission faults are complex — slipping, harsh shifts, delayed engagement, and complete failures all have different root causes. We diagnose properly before we quote, so you're not paying for guesswork. From valve body work to full overhauls, we handle it all.
- Slipping and harsh shift diagnosis
- Valve body repair and replacement
- Torque converter inspection
- Solenoid and sensor replacement
- Full fluid flush and service
- All automatic and some semi-automatic units
DCT Gearbox Repair
Dual-clutch transmissions require specialist knowledge and equipment. We repair and rebuild DCT units across a wide range of manufacturers — including Volkswagen DSG, Audi S tronic, Kia, and many other DCT-equipped vehicles. Whether it's a mechatronic fault, clutch pack wear, or software issue, we diagnose and fix it properly.
- VW DSG (DQ200, DQ250, DQ381 and more)
- Audi S tronic dual-clutch units
- Kia and Hyundai DCT gearboxes
- Mechatronic unit repair and replacement
- Clutch pack inspection and replacement
- All major DCT manufacturers covered
Full Gearbox Rebuilds
A complete unit rebuild means every internal component is inspected, worn parts replaced with quality components, and the unit reassembled to manufacturer specification. Every rebuild leaves our workshop tested and covered by our 12-month warranty.
- Complete strip-down and inspection
- All worn components replaced
- Quality OEM or equivalent parts
- Reassembled to manufacturer spec
- Bench tested before refitting
- 12-month or 12,000 miles warranty on all rebuilds
Diagnostics & Fault Finding
Modern gearboxes are electronically controlled. We use advanced diagnostic equipment to read fault codes, live data, and adaptation values — giving us an accurate picture of what's wrong before any work begins. No guessing, no unnecessary parts.
- Full electronic diagnostic scan
- Live data and adaptation analysis
- Fault code reading and interpretation
- Mechanical inspection alongside electronics
- Written report available on request
- Honest, accurate assessment
Clutch & Dual Mass Flywheel Replacement
We supply and fit clutch kits and dual mass flywheels across a wide range of makes and models. Whether your clutch is slipping, juddering, or you've got a noisy flywheel, we'll diagnose the fault and fit quality parts to get you back on the road.
- Full clutch kit supply and fit
- Dual mass flywheel replacement
- Clutch slip and judder diagnosis
- Flywheel noise and vibration assessment
- Quality OEM or equivalent parts
- All makes and models covered
Every repair and rebuild carried out at JD Transmissions is backed by a 12-month or 12,000-mile parts and labour warranty — whichever comes first. We stand behind our work.