![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
![Shimano DH-3D37-QR Hub Dynamo locknut self tightening while riding causing wheel to lock out. : r/bikewrench Shimano DH-3D37-QR Hub Dynamo locknut self tightening while riding causing wheel to lock out. : r/bikewrench](https://external-preview.redd.it/shimano-dh-3d37-qr-hub-dynamo-locknut-self-tightening-while-v0-1soGYA2bGqsdHQVHaFDz_lOi80OQrlFgG1fjKVY1QCA.jpg?auto=webp&s=5cff595db87cbe9e3f8b507502855ec6b9fd9a46)
Shimano DH-3D37-QR Hub Dynamo locknut self tightening while riding causing wheel to lock out. : r/bikewrench
![SHIMANO - Hub Dynamo DH-3D37-QR DH-3D32-QR- Disc Brake - 3.0W - CENTER LOCK - Quick Release - 16-28 inch wheel size Original - AliExpress SHIMANO - Hub Dynamo DH-3D37-QR DH-3D32-QR- Disc Brake - 3.0W - CENTER LOCK - Quick Release - 16-28 inch wheel size Original - AliExpress](https://ae01.alicdn.com/kf/H17c0a0aca5294ecd8eab6d6709f15777R.jpg_640x640q90.jpg)
SHIMANO - Hub Dynamo DH-3D37-QR DH-3D32-QR- Disc Brake - 3.0W - CENTER LOCK - Quick Release - 16-28 inch wheel size Original - AliExpress
![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/H839db642ad2e4dbfb571bf3d437f51312.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
![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/Sb5f28df67e88441d8c661c2a8c65c565P/DH-3D32-3D37-6V-3W-32Holes-Power-Generation-Hub-6-Bolts-Center-Lock-Quick-Release-Hub.jpg)
DH-3D32 3D37 6V 3W 32Holes Power Generation Hub 6 Bolts Center Lock Quick Release Hub Original Bike Accessories - AliExpress
![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/He97cf63d762940d2bb1d24a53f5c44e0f.jpg)