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"K13GT" Technical Q&A K1300GT- Technical Questions/Answers

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  #1  
Old 03-13-2018, 11:36 AM
hoss hoss is offline
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Clutch master rebuild kit

So, i fitted an Oberon slave just before winter, and just after using the bike again now, have lost all clutch pressure.
My mistake i realise now was using DOT brake fluid, not the mineral oil. SO i have probably killed all of the seals.
I would prefer to clean out an rebuild the cylinders, but i cannot find a seal / rebuild kit for sale anywhere.
Does it it exist? Has anyone rebuilt?
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Old 03-13-2018, 09:50 PM
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RFW RFW is offline
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Re: Clutch master rebuild kit

Well, it does say quite clearly on the cap on the reservoir that you must fill only with mineral oil! I'm curious how you missed that!

Anyway, I don't see why you think all the seals are gone. These seals are made of butyl rubber which, as I recall, is essentially unaffected by exposure to brake fluid.
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Old 03-14-2018, 05:11 AM
hoss hoss is offline
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Re: Clutch master rebuild kit

Quote:
Originally Posted by RFW
Well, it does say quite clearly on the cap on the reservoir that you must fill only with mineral oil! I'm curious how you missed that!

Anyway, I don't see why you think all the seals are gone. These seals are made of butyl rubber which, as I recall, is essentially unaffected by exposure to brake fluid.

Ah internet armchair hindsight, with a good spattering of exclamation marks. Thanks!
And No, NBR is degraded by Ethylene Glycol brake fluids (DOT).
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Old 03-14-2018, 12:42 PM
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Beech Beech is offline
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Re: Clutch master rebuild kit

I'm not too sure you can clean things up well enough to just change seals. I would install a new clutch line also. This includes new rebuild rubber on slave cylinder besides the master. Might be cheaper to find used a used master and other parts. I once read an article about a guy with a new (several years ago) corvette who changed the brake fluid and used DOT rather than the mineral oil. Cost him thousands to replace the brake system in total. Sorry for your hassle and brain fart while trying to do the right thing.
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Old 03-14-2018, 01:31 PM
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Re: Clutch master rebuild kit

Quote:
Originally Posted by hoss
Ah internet armchair hindsight, with a good spattering of exclamation marks. Thanks!
And No, NBR is degraded by Ethylene Glycol brake fluids (DOT).

Great reply Hoss! Sorry I can't help you but I won't take any shots at you either. Even if I do use a lot of exclamation points.
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Old 03-14-2018, 01:45 PM
gunny gunny is offline
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Re: Clutch master rebuild kit

i would remove the master, slave and hose (seal end before removing)
then reassemble on a work bench.
read all you can about how to perfectly clean and flush, buy lots of whatever is recommended and have at it several times, let dry and repeat, several times.
i mean flush like your bleeding it, us a cheap brake vacuum pump.
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