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October 19, 2011

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RogueMechanic

Hello Brad,
I would avoid putting it in your ultrasonic cleaner because of the exact reason you mentioned. Try spraying the internals as best as possible with PG2000 or similar penetrating lubricant. This has worked for me in the past if the internal components are gummed up. Obviously it's not going to do anything if a spring or ratchet has failed...I hope that this info helps. Thanks for writing! -John

Brad

Hi John,

I have searched and searched and have not been able to find any reliable advice on how to service STI levers. I know that they cannot be disassembled, I have 2 bikes with 7800 groupos, one of which I am about to tear down and rebuild. On this bike, I find that sometimes when shifting to a smaller rear cog, I have to press level several times before the ratchet engages.

Is there a way to clean and lubricate these things? I have an ultrasonic cleaner, but am leery about submerging it and possibly removing lubrication that I cannot replace.

Thanks in advance

Matt

Whoops, you've done it now John! Those Campag fan boys are forming an angry mob and lighting their torches again right now!

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