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How to service Shimano Cassette Body ?(6 posts)

How to service Shimano Cassette Body ?MT
Jul 16, 2001 4:16 AM
I would like to clean and replace grease on my Shimano cass. body.
It sounds like the grease are low or gone after i rode this set of wheels in heavy rain a few times
re: How to service Shimano Cassette Body ?Mike K
Jul 16, 2001 8:22 AM
Sounds like you need to lube your whole drive train and not just the cassette.
You might want to start by simply getting some chain lube like White Lightning and applying it as directed. This will help clean things and get things running smoothly.
If you have a ton of crud built up on the cassette or rust, etc you might want to pull it and clean it thoroughly. To do this you will need a chain whip (tool to hold the cassette from turning) and a Shimano cassette lock ring tool to break it loose (both should cost you $10-15 at your LBS or on-line).
You can use a toothbrush with a degreaser to get in between the cogs to get all of the grime. Then reassemble and lube.
You should always make sure that your bike is dried off and re-lubed after you ride in the rain and you should lube your drive train often (depends on conditions you ride in rain, dust, etc increase frequency) in general to make sure that everything keeps running smoothly.
Don't1 grzy mnky
Jul 16, 2001 10:07 AM
As I understand your question you are specifically asking about the mechanism that contains the pawls and ratchet. This can be removed with a 10 mm Allen wrench once the axle has been removed. However, the unit is not designed to taken apart and serviced by the consumer/LBS. It's not to say that you can't do it, but there are a ton of tiny little ball bearings and it's really a mess getting it all back together. It's probably faster and cheaper in the long run to buy a new body. You may also try getting something like TriFlow in there, but it does attract dirt. Putting White Lightning in there would be a mistake - the stuff will dry and cake. The bodies are pretty bomb-proof, but eventually wear out like anything else.
Don'tMike K
Jul 16, 2001 11:42 AM
I might have misread that... If it is the freehub he is referring to than White Lightning would be the last thing to use - wax is great for chains but not real good on bearings......
As grzy mnky said you can try to spray some TriFlow from the rear of the freehub body to see if that will help. Freehubs are a pain to remove and a mess to take apart and worse yet reassemble.. It is indeed easier just to get a new freehub if yours is dead and you still want to keep the hub...
Holy cow...why not?Rusty Coggs
Jul 16, 2001 12:04 PM
I have done it. Not especially challenging. If it were not to be done,why did Shimano make a special tool for it?
Holy cow...why not?grzy mnky
Jul 16, 2001 3:21 PM
You could say the same thing about STI levers - they actually give you the little crimped metal tube for free!

Just b/c something can be done, doesn't always mean it should be done. In all actuality I have no problems tearing these things apart - when I said it wasn't advised it was info I was repeating from the site. It just that isn't advised for everyone - some people have trouble servicing a bottom bracket - and that's OK. If you're decent at overhauling things then give it a whirl - the worst that could happen is the ball bearings roll under the 'fridge and down a mouse hole and the springs bolt for a sunny and warm climate the minute you pop it apart - then you'd buy a replacement which is what you'd do anyway.

Kinda like changing your oil vs. overhauling a transmission.