Eaton M90 Supercharger Rebuild Service

The Eaton M90 supercharger is a well-proven unit which is found in the Jaguar XJR X300 (XJ6-R), Aston Martin DB7 and Aston Martin Vantage 600, as well as a variety of cars in the US market.

Good though they are, these superchargers can be subject to premature seal or bearing wear, or failure of the drive coupler which transmits load form the snout shaft to the timing gears. Rattling at idle is the first indication that something is going wrong, usually that a bearing is starting to wear, or that a drive coupler is fractured and failing. The important thing is to have them repaired when you hear early signs of something being wrong – if they are left rattling too long and the damage is likely to extend from just bearing wear, which is curable, to wear of the rotors and/or main casing, which can be the end of the supercharger.

Replacing the Bearings & Oil Seals

Replacing the bearings and oil seals in your supercharger will give it a new lease of life, and your own peace of mind. As long as issues are identified and repaired early, our Eaton M90 supercharger rebuild costs as little as £305. You can either have your supercharger removed locally and sent to us by your preferred courier, or ask us about our collect and return insured courier service.

Snout Rebuild

If the issue you’re having are limited to just the snout of the supercharger, like a leaking end seal, we can rebuild the snout only for £125 plus return shipping. It will also be lighter and cheaper to ship than the full supercharger, but before you take this option remember that the main rear bearings are prone to failure, and you may wish to avoid a future repeat of the process to remove and refit the supercharger for the sake of two more bearings first time around by opting for the full M90 rebuild service!

Eaton M90 Supercharger Rebuild Service 2

Drive In Service

Alternatively, bring the car to us for drive-in / drive-out Eaton M90 supercharger rebuild service including removal from and refit back to your Jaguar or Aston Martin. Call us to discuss pricing and options for this service.

Eaton M90 Supercharger Rebuild Service 3

Rotor Pack Bearings

The M90 supercharger rebuild service does not include recoating the rotors or changing the pair of bearings and seals which live between the rotors and timing gears in the middle of the rotor pack. This is because at manufacture Eaton rolls the casting onto the bearing outer race, permanently sealing them in and meaning the casing has to be fractured to remove those bearings.

That said, these are in an oil bath and rarely fail – if on inspection we discover they have failed, we do not charge for the strip and would inform you we cannot recover the supercharger. On this supercharger type that is about a 5-10% risk. Although some service providers in the US do offer rebuild the rotor pack, Eaton Corporation themselves consider this to be an unreliable and often unsuccessful route to repair – when the rotor pack is worn out or damaged the only dependable solution is a new rotor pack.

Preventative oil changes are very important for your Eaton M62 supercharger. The high quality synthetic aviation turbine oil they are filled with from new is not indestructible and does oxidize gradually over years of exposure to high working temperatures – it lasts longer than a conventional mineral oil would, but not forever.

After only relatively low mileage, the original oil can have degraded from the nice clear sample on the left to burnt-smelling brown soup like the right hand sample – not good for protecting the bearings and seals in your Eaton M62 supercharger!

We have a range of oil refill kits which include the required quantity of oil for your Eaton M62 supercharger, with a syringe and tube to aid removing the old oil and filling with the new.