![Front Dynamo hub failure Shimano dh 3d37 qr. Any ideas on causes of this type of failure or is it due to bearings being gummed up and locking? : r/bikewrench Front Dynamo hub failure Shimano dh 3d37 qr. Any ideas on causes of this type of failure or is it due to bearings being gummed up and locking? : r/bikewrench](https://preview.redd.it/i261zthwvt271.jpg?auto=webp&s=fb94f3a6079cdbd233164860422f2ea182e3138d)
Front Dynamo hub failure Shimano dh 3d37 qr. Any ideas on causes of this type of failure or is it due to bearings being gummed up and locking? : r/bikewrench
![Amazon.com : SHIMANO Alfine Dynamo Bicycle Hub DH-3D37-NT with Rotor Mount Cover and SM-DH10 in Silver - 36H : Sports & Outdoors Amazon.com : SHIMANO Alfine Dynamo Bicycle Hub DH-3D37-NT with Rotor Mount Cover and SM-DH10 in Silver - 36H : Sports & Outdoors](https://m.media-amazon.com/images/I/41p35cDO2hL._AC_UF1000,1000_QL80_.jpg)
Amazon.com : SHIMANO Alfine Dynamo Bicycle Hub DH-3D37-NT with Rotor Mount Cover and SM-DH10 in Silver - 36H : Sports & Outdoors
![Source SHIMANO 32/36H Hub Dynamo DH-S501-QR DH-3D32-QR DH-3D30 DH-3D35 Disc Brake 6V/3W CENTER LOCK / 6 Bolt Quick Release hubs on m.alibaba.com Source SHIMANO 32/36H Hub Dynamo DH-S501-QR DH-3D32-QR DH-3D30 DH-3D35 Disc Brake 6V/3W CENTER LOCK / 6 Bolt Quick Release hubs on m.alibaba.com](https://sc04.alicdn.com/kf/H4bf832ce8bd04edf936468dc0f628eff6.jpg)
Source SHIMANO 32/36H Hub Dynamo DH-S501-QR DH-3D32-QR DH-3D30 DH-3D35 Disc Brake 6V/3W CENTER LOCK / 6 Bolt Quick Release hubs on m.alibaba.com
![Amazon.com : SHIMANO Alfine Dynamo Bicycle Hub DH-3D37-NT with Rotor Mount Cover and SM-DH10 in Silver - 36H : Sports & Outdoors Amazon.com : SHIMANO Alfine Dynamo Bicycle Hub DH-3D37-NT with Rotor Mount Cover and SM-DH10 in Silver - 36H : Sports & Outdoors](https://m.media-amazon.com/images/I/21lo60R3i2L._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingTHREEANDHALF%2CBottomLeft%2C360%2C-6_SR600%2C315_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
Amazon.com : SHIMANO Alfine Dynamo Bicycle Hub DH-3D37-NT with Rotor Mount Cover and SM-DH10 in Silver - 36H : Sports & Outdoors
![Source SHIMANO 32/36H Hub Dynamo DH-S501-QR DH-3D32-QR DH-3D30 DH-3D35 Disc Brake 6V/3W CENTER LOCK / 6 Bolt Quick Release hubs on m.alibaba.com Source SHIMANO 32/36H Hub Dynamo DH-S501-QR DH-3D32-QR DH-3D30 DH-3D35 Disc Brake 6V/3W CENTER LOCK / 6 Bolt Quick Release hubs on m.alibaba.com](https://sc04.alicdn.com/kf/Hed48d887fb0e4f499d94ba7bdc9822eeT.jpg)
Source SHIMANO 32/36H Hub Dynamo DH-S501-QR DH-3D32-QR DH-3D30 DH-3D35 Disc Brake 6V/3W CENTER LOCK / 6 Bolt Quick Release hubs on m.alibaba.com
![DH-3D32 3D37 6V 3W 32Holes Power Generation Hub 6 Bolts Center Lock Quick Release Hub Original Bike Accessories - AliExpress DH-3D32 3D37 6V 3W 32Holes Power Generation Hub 6 Bolts Center Lock Quick Release Hub Original Bike Accessories - AliExpress](https://ae01.alicdn.com/kf/S603a8a98519545f595106f647ff30f547/DH-3D32-3D37-6V-3W-32Holes-Power-Generation-Hub-6-Bolts-Center-Lock-Quick-Release-Hub.jpg)