You can now send or bring your ebike motor to us for service, bearing replacement or full overhaul. Although a fairly quick job to remove these motors, if you don’t have the tools, you can always ask your local bike shop to remove it for you. Our address can be found on our contact page.
A full service consists of fitting your motor to our test rig and ensuring everything is working correctly and sounding as it should. Next we open the motor, removing the drive train and all gearing. We inspect the wiring, bearings, bearing surfaces and gears. If all is ok? We clean and re-grease all gearing. The motor is then re-assembled with with new O-rings and seals. Fitted to our test rig and then sent back £65.00 + Shipping Is it really worth it!?
Overhaul prices may vary depending on exactly which bearings require changing? If you’re unsure we will remove the right hand engine cover, inspect all bearings and contact you before commencing any work. If you don’t wish to proceed, we will replace the motor cover, send your motor back and just charge postage.
You’re also welcome to send in components like the clutch bearing assembly and we will change the
bearings and ship it back to you.
We have a basic guide to pricing below for the Bosch motors. Yamaha, Brose, Shimano, Impulse, Panasonic etc. to be added soon!
Bosch main motor bearing change:
Fit motor to test rig and test. Remove right hand engine cover, press out drive sprocket carrier and gear assembly, press out main motor bearing, fit new main motor bearing, replace gear assembly and
engine cover. Re-fit to test rig and re-test.
Bosch main motor and crankshaft bearing change:
Fit motor to test rig and test. Change main motor bearing as above. Press out right hand crank bearing along with main motor large needle roller clutch bearing. Remove crankshaft from motor, press out left-hand crankshaft bearing and fit new. Clean and re-grease all gearing. Refit to test rig, re-test. Including both crankshaft O-rings, drive sprocket O-ring and grease.
Bosch major overhaul:
Fit motor to test rig and test. Change main motor bearing, both crankshaft bearings, main motor clutch bearing, Idler gear clutch bearing, idler gear deep groove ball bearing and main motor drive gear bearing. Refit to test rig, re-test. Including both crankshaft O-rings, drive sprocket O-ring and grease.
Bosch complete motor overhaul:
Fit motor to test rig and test. Change main motor bearing, both crankshaft bearings, main motor clutch bearing, Idler gear clutch bearing, idler gear deep groove ball bearing, main motor drive gear bearing, small gear cluster deep groove ball bearing and needle roller bearing and transfer gear bearing. Refit to test rig, re-test. Includes new crankshaft circlips, both crankshaft O-rings, drive sprocket O-ring, new motor seal and grease.