1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Does this look normal? Brake Boost

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Old Nov 27, 2010 | 08:41 PM
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Does this look normal? Brake Boost

Does this look normal to you? I'm about to replace the master brake cylinder and noticed that the rod came out as well. I cleaned it up and it looks okay but I'm wondering if it's supposed to do that.
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Old Nov 27, 2010 | 08:45 PM
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Pic?
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Old Nov 27, 2010 | 08:58 PM
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...too busy watching the hockey game...here it is...
Attached Thumbnails Does this look normal? Brake Boost-img_1078.gif  
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Old Nov 29, 2010 | 06:00 AM
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Originally Posted by G-man
Does this look normal to you? I'm about to replace the master brake cylinder and noticed that the rod came out as well. I cleaned it up and it looks okay but I'm wondering if it's supposed to do that.
Monday morning bump.
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Old Nov 29, 2010 | 09:04 AM
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From: https://www2.mazda.com/en/100th/
not normal, but put it back and see if it holds vacuum
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Old Nov 30, 2010 | 06:51 AM
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Originally Posted by j9fd3s
not normal, but put it back and see if it holds vacuum
hmm. I went digging through my inventory of parts and found another booster from an SE I once had. It did the same thing. Rod, rubber gasket and metal washer all came out in my hand with little or no force.

I'm going to do as you suggested and cross my fingers that it holds the vacuum. I won't have the car running for a while so I'll have to put it together, get the car running, and then test out the brakes. Thanks.
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Old Nov 30, 2010 | 07:49 AM
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I've never had one actually come out, but that rod is able move around quite a bit with the master cyl off. I wouldn't worry too much about it assuming you can put it back together with no problems.
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Old Nov 30, 2010 | 08:51 AM
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its fine as long as the o ring is good.
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Old Nov 30, 2010 | 11:24 AM
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Originally Posted by Man_in_black49464
its fine as long as the o ring is good.
O-ring looked good. I cleaned the years of crap from around the opening and the ring itself and put it back together. Time will tell.

Thanks for all the input.
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Old Dec 6, 2010 | 11:58 AM
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The rod is attached to the diapram (sp?) last time I checked. Personally, I wont use that booster.
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