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Posted

Happy bank holiday garage time chaps,

Almost completed my Gen1 Zero nut and bolt rebuild and want to prime and bleed Fiat 128 dual master cylinder with remote reservoirs. 

Is there a particular in which I do this? 

Any help would be gratefully received.

The attached image shows siting of reservoirs. Thanks, Craig

 

GBS Zero New Front with reservoirs - 1.jpeg

Posted

Looking at the length of the hoses from the resevoirs to the MC, gravity feed should be possible.

Unbolt the resevoirs and suspend them still connected as high as you can. Fill them and crack the bleed nipples and wait keeping checking the fluid level.

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Posted

As noted already, you'll probably need to raise the reservoirs to get the systems to bleed, however you may still struggle without a pressure bleeder (e.g. EeziBleed) due to the 'up and over' loops in your feed lines to the master cylinders as an air bubble can get stuck at the top of the bend. Ideally you want the pipes to the reservoir to be running up hill all the way from master cylinder to reservoir and that way there is an element of passive bleeding going on all the time and any air in the master cylinder can escape back up the pipe.

Posted

I've got the GBS remote oil reservoir (similar thing) and I did use the Eazebleed system but it was hardly necessary - I could have easily done it by simply pumping the brake pedal by hand. What was useful from the Eazebleed system is a short pipe with a one-way valve on it. Attach that to each bleed nipple in turn and just pump the brake pedal until fluid runs clear without bubbles. Repeat for the other 3 calipers.

My system has been like that for 7 years and 22k miles without any hassle (although it sadly doesn't look as clean and shiny now :) ).

20160427_214028.jpg

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