Eaton’s M62 and MP62 variants from other manufacturers using Eaton rotor packs are good dependable superchargers used in medium sized car engines with great success. Used by car manufacturers including Mercedes and Lotus, the M62 and MP62 come in various guises, some with a normal drive pulley and some with electrically switched clutch built into the pulley assembly.
Good though they are, these superchargers can be subject to premature seal or bearing wear, or failure of the drive coupler. 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 will spread from bearing wear, which is curable, to wear of the rotors and/or main casing, which can become bad enough to scrap 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 not ignored and repaired early, our Eaton M62 supercharger rebuild kits, which start at £95, should fix the problem. You will need access to a workshop press but other than that the job is not beyond the ability of a competent mechanic.
The kits include snout bearings, snout oil seal, rear needle roller bearings and the required oil to fill the supercharger after reassembly. (Please note this does not include parts for the electric clutch unit found on some Mercedes models. If faulty, these clutch units are available from Mercedes as they are car-specific).
M62 Snout Rebuild Kit
If your problem is just a leaky snout oil seal, or you’ve stethoscope and confirmed that just a snout bearing needs to be replaced, then our Eaton M62 snout rebuild kit at £46 may be the most cost-effective way to have your car back to good health. The snout rebuild kit includes front and rear snout bearings, snout oil seal and the required oil to fill the supercharger after reassembly. BUT – if there’s any doubt over the condition of the rear bearings, it would be advisable to change them as well. The 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 buying the full rebuild kit!
Rotor Pack Bearings & Seals
Our M62 supercharger rebuild kits do not include 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 – when we are rebuilding superchargers we do not change the rotor pack bearings. If they do fail, some service providers in the US do offer rebuild of the rotor pack, but the 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.
If you want to attempt to rebuild your Eaton M62 rotor pack we can supply you the parts, but caution that it is not a straightforward task.