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HOw do i get the resivior off of the master cylinder

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Old Jun 16, 2004 | 10:53 AM
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Default HOw do i get the resivior off of the master cylinder

Once the cylinder is off of the car, how do i pull the resivior off of the cylinder. It looks like the resivior has a seam on it, can i take off the top half or what do i do to get it off. thanx
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Old Jun 16, 2004 | 10:56 AM
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Not sure how to get it off...but why would you want to take it off? If you replace the entire MC it comes with a new resivior.
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Old Jun 16, 2004 | 11:02 AM
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There are 2 different sizes, one comes with the resivior, one doesnt
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Old Jun 16, 2004 | 12:33 PM
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There are two roll pins at the bottom of the resivoir, beat them out with a punch.
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Old Jun 16, 2004 | 12:46 PM
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Originally Posted by Damemorder
There are two roll pins at the bottom of the resivoir, beat them out with a punch.
Make sure you use the right size punch!!
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Old Jun 17, 2004 | 03:13 PM
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Originally Posted by TrueWildMan
Originally Posted by Damemorder
There are two roll pins at the bottom of the resivoir, beat them out with a punch.
Make sure you use the right size punch!!
Second that. Support the master cylinder on its side, on a block of wood or similar, and then you can knock the roll pins straight down and out. If you don't have a punch, try using a small-diameter machine screw, held by needle-nose pliers.

You need a punch or screw with a _flat_ end, not a pointy one, or else you'll end up hammering the punch into the roll pin rather than pushing it through. If you flare out the end of the roll pin by mistake this way, you'll be stuck; you'll have to get a better tool, and hope you can push it out from the other side instead.

Knock the roll pins out from either side, from whichever side they're projecting out the least. If their ends are rusty, the rust may swell the pin to a larger diameter, making it harder to pound the pin through to the other side without cracking the plastic mounting hole of the reservoir, so pick whichever end seems like it'* in the best shape, and go carefully.
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Old Jun 17, 2004 | 05:10 PM
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Originally Posted by acg_ssei
reservoir
Thank you for spelling that correctly.
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Old Jun 17, 2004 | 05:59 PM
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Ok now that i have the reservior off, what should i use to clean the inside of it. thanx
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Old Jun 17, 2004 | 06:02 PM
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Originally Posted by StoopidSavant
Originally Posted by acg_ssei
reservoir
Thank you for spelling that correctly.
Heh. No prob.

I had another thought on this one: If you have access to a bench vise and you get the master cylinder clamped in it just right, you could use the vise to _press_ the pins at least partway out, rather than hammering them. Once they're cracked loose and you've moved them even a little bit, it should be a little easier to knock them the rest of the way.
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Old Jun 17, 2004 | 06:03 PM
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Originally Posted by jachin
Ok now that i have the reservior off, what should i use to clean the inside of it. thanx
Fresh brake fluid, I think. You usually don't want to introduce any other fluid at any time.
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