Brake master cylinder glass and screws - Honda Rebel Forum
 
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post #1 of 7 Old 05-12-2019, 03:08 PM Thread Starter
 
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Brake master cylinder glass and screws

Hi,
has anyone changed the brake master cylinder glass lense?
Mine is leaking, and as even manual says, that brake fluid is bad for paint and rubber parts, it is normal, that in some time the leaks appear through rubber sealing.


But is it ok to use chinesse lenses for few $
https://www.ebay.com/itm/2pcs-18mm-M...wAAOSwSQFZ6W5z


Because most of them are 18mm. I cant see the OEM parts for sale.
or maybe there are other ways of sealing the glass.


Of course i could get some repair kit like this (as my screws are also screwed):
https://www.ebay.com/itm/Honda-REBEL...UAAOSw4DJYm41J


But who will guarantee, that this is not the same chinesse lense. (only screws can be legit OEM because of the package code. But those cost 0.50-1.00 $ each )
Any thougts on this? Because o don't want to change whole cylinder for any aftermarket replacement. and the original parts for sale are in questionable condition and cost 3 times more than actually needed.

1987 Honda Rebel 450
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post #2 of 7 Old 05-12-2019, 08:52 PM
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Read this for some info on size. https://www.hondarebelforum.com/f78/...-at-14503.html

The supplier listed in post number five of the thread above still sells the 16.2mm glass lenses. Minimum order is $18 so eight lenses ($20) plus $9.77 shipping. Comes to about $3.75 each.

One reason the OEM lenses go bad is they are plastic, not glass. There used to be a supplier on ebay that sold true glass lenses, but he's not offering them any more. I've sent him an email to see if he can still supply them and will update this thread if he does.

Keepin' all the left over parts. Gonna use 'em to build another bike!

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post #3 of 7 Old 05-13-2019, 12:29 AM Thread Starter
 
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Thanks for the link. So mostly there is no need of using O ring, just to get a good epoxy glue. The idea with using watch glass is nice. Will ask some watch repair stores around, because all i can find is 16.2 1mm mineral glass for 1$ (i actually could glue two of them together. Even if i get slightly bigger diameter glass (for example 18mm), i could always sand it a little on the sides.

1987 Honda Rebel 450
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post #4 of 7 Old 05-13-2019, 12:57 AM
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Sanding down a too large glass might work. The trick would be to keep it round.

The sight glass replacements on ebay show that they are Honda part number 93600-040120G. When I checked, the description for that number indicates it is only the screws, and doesn't mention the sight glass. So I'm wondering if the sight glass replacement is even offered by Honda, and those parts may be counterfiet.

BTW, you can probably get the replacement 4X12 mm flat screws at a hardware store for a lot less than Honda charges. Getting stainless steel ones would prevent any corrosion in the future.

Keepin' all the left over parts. Gonna use 'em to build another bike!

'01 & '09 Rebel 250, '06 Ninja 250, '89 VN 750
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post #5 of 7 Old 05-13-2019, 08:45 AM
 
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Honda was known for part-reuse and part consistency on lots of models, 450/250/gen2/universal fitment $20 for a new master cylinder assembly from ebay/amazon/other might be worth the gamble, as long as it fits the 7/8 handlebar diameter, just about any "for honda" one would do the job....

https://www.ebay.com/i/232388932489
https://www.ebay.com/i/113356460944?chn=ps

https://www.ebay.com/b/Brake-Cylinde...bmodel=CMX450C
https://www.amazon.com/dp/B00UL32DPQ

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post #6 of 7 Old 05-14-2019, 01:11 PM Thread Starter
 
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Thanks for the guidance. I've been looking at some of those master cylinders.
But for now i will try the improvized repair kit - new screws from screw shop and watch mineral glass (found one that is 16.5mm x 2mm)
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1987 Honda Rebel 450
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post #7 of 7 Old 05-14-2019, 03:28 PM
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The store that used to list the glass replacements on ebay still sells them. I haven't heard back as to how to order them.

Update: Here's a link https://www.ebay.com/itm/85-16-Honda...ty!24084!US!-1

Keepin' all the left over parts. Gonna use 'em to build another bike!

'01 & '09 Rebel 250, '06 Ninja 250, '89 VN 750
Putting your bike year and model in your signature helps others help you!
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