Electric motors

When to have it looked at

• A whine or a rumble that rises with road speed — usually a bearing.
• Vibration through the floor or the steering.
• Coolant level falling with no leak, or coolant in the expansion tank.

Why it fails

Almost never electrical. In the vast majority of units we open, the cause is mechanical and falls into two families: coolant that has reached the rotor cavity past a worn seal, and bearings that have run out of life. The first produces no symptom at all until insulation faults appear, by which point the bearings, the stator and the gearbox are already contaminated.

How we work

1. We record the condition in writing before anything is opened, and you get a copy.
2. The unit is stripped and inspected. It is the only way to know the real state of it.
3. Everything that matters is measured, not estimated.
4. You get a written quote before any repair starts. Nothing proceeds without your agreement.
5. We replace what has actually failed and what will fail next, not the whole assembly.
6. It is tested under load and returned to you with the findings written up.

What decides the price

What moves the price is the platform, what we find once it is open — which nobody can know beforehand — and whether the original parts can be reused. That is why the quote comes after the inspection and not before it.

Turnaround, warranty and whether a teardown is chargeable are set by this workshop. Ask us before you commit.