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Re: [TR] Brake master cylinder and bleeding the brakes.

To: "Wayne" <rengrave@verizon.net>, <triumphs@autox.team.net>
Subject: Re: [TR] Brake master cylinder and bleeding the brakes.
From: "dorpaul" <dorpaul@bellsouth.net>
Date: Sat, 12 Sep 2009 23:48:42 -0400
Wayne...
Wouldn't a MC that had been rebuilt w/ the seal accidentilly turned 
backwards also cause crazy behavior with the piston (like you describe). 
But then again, what do I know about brakes?
Paul

----- Original Message ----- 
From: "Wayne" <rengrave@verizon.net>
To: <triumphs@autox.team.net>
Sent: Saturday, September 12, 2009 6:59 PM
Subject: [TR] Brake master cylinder and bleeding the brakes.


>I think I need a new brake master cylinder, I rebuilt the old one but I was
> not happy with the
> bore surface finish after I honed it. The finish was not very smooth and 
> when
> I assembled
> the plunger and new seals, I pushed the piston in and it would just sit
> there.
> I had to bang it on the work bench to send the piston back to the front of 
> the
> bore.
> I had plenty of brake fluid in the bore when I assembled it but it still 
> would
> not return
> to the front of the bore on it's own.
> I was hoping it would move once it was flooded with fluid on the car,
> but.........
>
> I managed to bleed the rear brakes with gravity, however the front brakes
> would not bleed,
> I tried pumping the pedal (which didn't feel right) and the fluid in the
> reservoir would not
> go down.
>
> I think the piston is stuck at the rear of the bore in the master cylinder 
> and
> therefore is blocking
> the fluid from the reservoir to the piston and the pipes. When I push the
> pedal I'm not feeling
> resistance. it's not a smooth travel.
>
> I thought the PDWA could be blocking the fluid, but I think it lets fluid 
> go
> by no matter where
> the shuttle is located inside it.
>
> So, I think it's time to order a new M/C.
> Any suggestions where I should go? TRF, Moss, BRNW or have mine rebuilt by 
> a
> pro?
>
> Wayne
> 73 TR6
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