KZ1100 Front Master Cylinder Diaphragm

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09 Jan 2015 23:22 #658233 by rokit_armor
KZ1100 Front Master Cylinder Diaphragm was created by rokit_armor
So I bought a replacement front master cylinder for my kz1100
www.2wheelpros.com/magura-hydraulic-brak...ssembly-2516117.html
Bled the crap out of the system- it was all completely dry when I started. Went through at least 10oz of fluid, no air is coming out when I bleed it, but I have nearly full play on the brake lever. I feel this master cylinder may just be a bit too weak for a dual-caliper setup. So i ordered a rebuild kit from Z1, but I need the diaphragm. Mine was toasted when I got it.
Ebay yields no results for this bike.
Any suggestions?

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10 Jan 2015 15:40 #658317 by rokit_armor
Replied by rokit_armor on topic KZ1100 Front Master Cylinder Diaphragm
No eBay APP ID and/or Cert ID defined in Kunena configurationAlso, I have a feeling these will fit



Am I good to get them?

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17 Jan 2015 14:35 - 17 Jan 2015 15:10 #658915 by rokit_armor
Replied by rokit_armor on topic KZ1100 Front Master Cylinder Diaphragm
*bump*
Still need that diaphragm. Is there an alternative solution to this?


*edit*

Found one on fleabay. Dang NOS parts are expensive :/
So far this front master cylinder has cost me almost $200. yeeeesh.
Last edit: 17 Jan 2015 15:10 by rokit_armor.

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17 Jan 2015 17:50 - 17 Jan 2015 17:51 #658923 by martin_csr
Replied by martin_csr on topic KZ1100 Front Master Cylinder Diaphragm
That Magura master cylinder has a 13mm piston bore.
For dual disk you'd probably need 14mm or 16mm.
CycleBrakes sells Galfer brake lines, but I do not know anything about their pricing.

Usa-motorcycles-inc sells a variety of Fr Br master cylinders. Here's one:
16MM 5/8" DOUBLE CALIPER TWIN PISTONS FRONT BRAKE MASTER CYLINDER CX500 CB900
Last edit: 17 Jan 2015 17:51 by martin_csr.

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17 Jan 2015 21:25 #658941 by !Seymore
Replied by !Seymore on topic KZ1100 Front Master Cylinder Diaphragm
Sounds like you still have air bubbles in the line. Try something? ...hold the brake lever in the compressed position and tie it there, overnight. Try it in the morning and see if you get any restriction...

Let us know if this has any effect.

C.
79' KZ650-D2 [fsm] (Max)
83' KZ750-F1 LTD [clymers] (Kay)
82' KZ1100-D1 Specter (another project)
78' KZ650-B2a (J&H, A Project)
91' KZ1000-P (P = parts)

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  • SWest
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  • 10 22 2014
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18 Jan 2015 07:36 #658976 by SWest
Replied by SWest on topic KZ1100 Front Master Cylinder Diaphragm
I had the same problem. I took it apart and found some slime in there. I need a rebuild kit and a diaphragm too. It works but the seal on top seeps.
Steve



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18 Jan 2015 19:48 - 18 Jan 2015 19:53 #659038 by rokit_armor
Replied by rokit_armor on topic KZ1100 Front Master Cylinder Diaphragm
I will try the 'reverse bleed' method when I get a chance to put the stock master cylinder on. The stock master cylinder will let me use the stock brake light switch anyway. Cleaned the everloving heck out of that thing, it was pretty gnarly. rebuild kit moves nicely in there. I made a lame absent-minded mistake and somehow tossed the brand new rebuild kit in the dumpster :huh: Luckly I managed to find it before trash guy came.
Last edit: 18 Jan 2015 19:53 by rokit_armor.

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