STI lever overhaul

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STI lever overhaul

Postby kukamunga » Mon May 05, 2008 9:59 pm

Picked up my first ever pair of STI levers/ 'brifters' - Shimano 105 - today (yes.... off hard rubbish! :roll: ) Just wondering how serviceable these things are? Mine appear to need some work, so before pulling them apart and having small parts springing through the air :shock:, thought I'd see if any one here can point me in the right direction - online service manuals, personal experience etc. Cheers :)

EDIT/PS: Earlier, non-flight deck compatible, pre-'98 model, 8 speed - I think (& hope)!
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by BNA » Mon May 05, 2008 10:16 pm

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Postby sogood » Mon May 05, 2008 10:16 pm

For Shimano units, it's essentially unserviceable. But I read some really really dedicated people have done it. :roll:
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Postby kukamunga » Mon May 05, 2008 10:21 pm

sogood wrote:For Shimano units, it's essentially unserviceable. But I read some really really dedicated people have done it. :roll:

I can be really really dedicated (when I commit myself..... and feel enthusiastic..... and keen). Really..... :wink:
Last edited by kukamunga on Mon May 05, 2008 10:22 pm, edited 1 time in total.
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Postby Bnej » Mon May 05, 2008 10:22 pm

STI shifters are a tightly packed nest of springs, ratchets, pawls and washers. They aren't designed to be user serviceable, though if you got them for free it wouldn't do any harm to have a go.

I have seen some 90s STI shifters come good with just a bit of spray lube and cycling the shifters a lot of times. If they're just gummed up this might be all you need to do.
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Postby kukamunga » Mon May 05, 2008 10:28 pm

Bnej wrote:I have seen some 90s STI shifters come good with just a bit of spray lube and cycling the shifters a lot of times. If they're just gummed up this might be all you need to do.

Yep. This has worked often for me with my MTB shifters.

The left brake lever spring doesn't seems to be returning lever, but pushing it away (if that makes sense). This seems safe enough to pull apart. Maybe someone has already fiddled with it..... :roll:
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Postby tallywhacker » Mon May 05, 2008 10:56 pm

it is possible. I serviced my old 105s. You have to do it really, really carefully as bits do literally fly across the room. PM me with your email address and I'll send you a PDF that has some details. Its for the ST-5600 & ST-R700 shifters.
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Postby kukamunga » Mon May 05, 2008 11:08 pm

tallywhacker wrote:it is possible. I serviced my old 105s. You have to do it really, really carefully as bits do literally fly across the room. PM me with your email address and I'll send you a PDF that has some details. Its for the ST-5600 & ST-R700 shifters.

Thanks tal. Mine are ST-1055, I tink
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Postby Pushy » Tue May 06, 2008 1:34 am

This might help.
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Postby LuckyPierre » Tue May 06, 2008 11:33 am

I've been told that they 'explode' if you attemp to fiddle with them - but anything goes really. My lbs tried spraying to free up some 9-speed 105 shifters for me, with limited success.
As they came from the hard rubbish, it's probably worth a try - just be very careful, very patient, and very particular about keeping track of what goes where.
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Postby familyguy » Tue May 06, 2008 9:16 pm

BikeSnob answered this one a while ago:

Linky

Pay attention to the diagrams in the "How can I overhaul my Shimano STI/Campagnolo Ergopower levers?"

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Postby LuckyPierre » Wed May 07, 2008 9:21 am

Sucked me in!
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Postby MountGower » Wed May 07, 2008 6:33 pm

Look at the second post of page two here. Not sure I could be bothered with this.
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Postby kukamunga » Wed May 07, 2008 10:50 pm

Image

:shock:
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Postby Parrott » Thu May 08, 2008 9:41 am

kukamunga wrote:Image

:shock:


Yeah, I'd say go with the spray lube.
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Postby kukamunga » Thu May 08, 2008 10:00 am

...or more fish oil for improved brain function!!!
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Postby Parrott » Thu May 08, 2008 12:49 pm

:D
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Postby LuckyPierre » Fri May 09, 2008 11:00 am

I suppose that's kind of the 'before' shot - now where's the 'after' one. :wink:
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Postby kukamunga » Fri May 09, 2008 2:16 pm

LuckyPierre wrote:I suppose that's kind of the 'before' shot - now where's the 'after' one. :wink:

Just picture a single-speed bicycle for the 'after' shot! :wink:
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