Gearbox repair & replacement

Work out the right repair for your gearbox.

JTK offers gearbox diagnostics, repairs, rebuilds and replacement. Inspection helps establish whether individual components can be repaired or whether more extensive work is needed.

• Investigation of gear selection and transmission faults.
• Repairs to seals and other individual components.
• Gearbox rebuild and replacement enquiries.
• Transmission fluid servicing appropriate to the vehicle.

Manual and automatic faults need the right starting point

Difficulty selecting a gear, a delayed response, slipping or a new noise can require different checks. Tell the workshop whether the vehicle is manual or automatic, which gears are affected and whether the issue changes after the vehicle warms up.

Include previous gearbox, clutch or transmission-fluid work. A dashboard warning or an existing diagnostic report can help explain the concern, but an inspection may still be needed to confirm the cause.

Repair, rebuild or replacement?

The condition of the gearbox and the availability of suitable components influence the options. A leak or an individual component fault does not automatically mean the complete gearbox needs replacing.

Ask the team to explain the proposed scope, which parts are involved and what further assessment is needed before a price can be confirmed. Let them know if the vehicle is needed for daily work so the practical arrangements can be discussed.

Gear selection is not always an internal gearbox fault

Difficulty selecting a gear can involve the clutch, linkage or another part of the drive system. An automatic transmission may need a different investigation from a manual. Tell the workshop which type is fitted and whether the symptoms happen from cold, after warming up or under particular driving conditions.

Bring any diagnostic report and details of recent fluid or clutch work. If a gear is unavailable, the vehicle slips or drive is lost, explain that when contacting the team so suitable arrangements can be discussed.

Understanding gearbox repair costs

The useful comparison is the scope of the job: investigation, parts, labour, fluids, installation and any testing or setup that applies. Ask which elements are confirmed and which depend on opening or inspecting the unit. A fluid service is not a substitute for diagnosing a mechanical or control fault.

If replacement is proposed, clarify whether the unit is new, used or reconditioned, what its terms cover and whether any related issue must be addressed at the same time. JTK can discuss those options once the vehicle and findings are known.

Useful details to have ready.

Tell us whether the vehicle is manual or automatic, which gears are affected and whether the problem changes when the engine warms up. Include details of previous transmission work.

• Your registration, make and model.
• Your mileage and the work you’d like to discuss.
• Any warning lights, noises or changes you’ve noticed.
• Your preferred day and a number to reach you on.

The branch will confirm the work and a suitable time with you. Sending a request does not book a workshop slot.