I have a Gazelle cargo bike with Shimano Nexus roller brakes. I know these need to be greased fairly regularly. Unfortunately the bar from the carrier is right on top of the hole for adding the brake grease. Does anyone know of some sort of bendy tube or a way of getting the grease in the hole without dismantling the whole of the front wheel. I'm not mega bike savy so I'd not feel very confident about unscrewing the whole lot to apply the grease. Thanks in advance.

  • Unfortunately, roller brakes are very rare, so most of us are not familiar with them. But I would probably visit a hardware store and find a bit of rubber tubing that would fit. – Daniel R Hicks Dec 8 '19 at 14:11
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    Can you take a photo and edit it into your question? I have some ideas that may work. – Criggie Dec 9 '19 at 11:27
  • In the 9-10 years I rode a bike with a Shimano roller brake, I never greased it. Never had any problems with it. – Michiel Dec 11 '19 at 19:30

According to this answer in reply to a question about what grease to use with Shimano roller bakes, it's important to use the proper Shimano roller brake grease and to apply it into the hole properly. The Shimano grease comes in a tube with a nozzle that facilitates proper grease application.

Very important to follow the instructions that come with the grease - main point is to insert the grease tube nozzle at least 12mm into the hole otherwise the grease will not reach the actual braking surface.

Simply pushing grease into the hole will not be effective. Some sort of extension made from rubber or flexible plastic tube would work as long as it can be inserted into the hub far enough.

I don't think you are correct in the assertion that roller brakes need to be greased often. According to the Shimano instructions grease only needs to be added when the brakes are not working well or are making noise.

  • Thanks not a bad idea! Its finding something that will flex but will permit the grease through which is thick. I've thought about pushing it through with a spatula. – Gillu Dec 8 '19 at 14:43
  • If the tube has a nozzle then it would probably be possible to push it inside a length of rubber hose to allow grease to be forced down the hose. – Daniel R Hicks Dec 8 '19 at 15:05
  • For a process that has to be done rarely and involves bigger safety I should rather do it right than botch something. Better to learn how to take the wheel out and apply the nozzle as instructed by Shimano. If available, a local bike shop, a bike repair cooperative, or someone helpful will certainly help with that. If need be we may walk you though the procedure here as well. – gschenk Dec 9 '19 at 11:33

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