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master cylinder protector

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jschampkin
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master cylinder protector

Post by jschampkin on Tue 29 Sep 2015, 7:57 pm

I've just changed the brake oil on the front brake but when topping up I dislodged the protector. Do you know which way up it goes . Thanks
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jchesshyre
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Re: master cylinder protector

Post by jchesshyre on Tue 29 Sep 2015, 8:04 pm

Do you mean the rubber diaphragm (oo er) that sits under the lid and the plastic piece in the reservoir?
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jschampkin
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Re: master cylinder protector

Post by jschampkin on Tue 29 Sep 2015, 8:33 pm

Hi  , no ,  on the bottom of the master cylinder next to the brake line hole is a raised recess where this little metal chappy fits. I've googled the master cylinder exploded views and it calls it a protector . It's circular both ends but one end has a small hole in it and tabs around the edge.  It's number 6 on the brake cylinder view

http://www.micksgarage.com/images/honda/bikes/CB500T_1996_F-4%20FR.%20BRAKE%20MASTER%20CYLINDER%20(1).png
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jerryfudd
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Re: master cylinder protector

Post by jerryfudd on Tue 29 Sep 2015, 9:28 pm

thats new to me, don't get that on the later model.

I took a look at the Lings diagram and it appears to have prongs protruding upwards..... that make any sense?

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jschampkin
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Re: master cylinder protector

Post by jschampkin on Tue 29 Sep 2015, 9:40 pm

I'll have a look to see how I left it. Thanks for your help
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jschampkin
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Re: master cylinder protector

Post by jschampkin on Tue 29 Sep 2015, 9:43 pm

Anybody got a 1996 to see how the thing sits on their bike  Very Happy Very Happy
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jchesshyre
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Re: master cylinder protector

Post by jchesshyre on Tue 29 Sep 2015, 9:44 pm

I've got a derelict one in my back garden...I'll have a peek in a bit...
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jchesshyre
the 900
the 900

Posts : 636
Location : Chester

Re: master cylinder protector

Post by jchesshyre on Tue 29 Sep 2015, 10:23 pm

Well, here's a picture of the interior of mine. Does this help at all? I've got a feeling that the 'protector' is missing, and was missing for the entire 125,000 miles I rode on it, as I tried to move that bit at the bottom and it seemed to be part of the reservoir. 


What's it supposed to 'protect' the master cylinder from anyway?
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jschampkin
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Re: master cylinder protector

Post by jschampkin on Tue 29 Sep 2015, 10:40 pm

Thanks for looking, can't do too much then if yours worked fine without it all that time !
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eternally_troubled
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Re: master cylinder protector

Post by eternally_troubled on Wed 30 Sep 2015, 12:31 pm

Ah!  Is that the bit that goes over the hole at the bottom of the master cylinder?  A bit like a filter...

I seem to recall that my '97 there is a plastic thing at the bottom of the reservoir covering the hole... (admittedly it is the brembo version, but...)

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Re: master cylinder protector

Post by Guest on Wed 30 Sep 2015, 3:48 pm

Tabs go up so that it sits as deep as possible if I remember well when last it was open...
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jschampkin
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Re: master cylinder protector

Post by jschampkin on Wed 30 Sep 2015, 7:31 pm

Thanks everyone , I think that's how I left it

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