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Dear Friends,


This maybe trivial but I don't want to risk anything here.

My brake master cylinder/reservoir is leaking at the seal on master vac side and I don't know how to fix it. I also bought a new master cylinder (since the genuine master cylinder is old already) and another option I have is to install the new pump with the old reservoir. But how do I remove the reservoir without damaging it? And how to install it to the new pump?


Thank you

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Hi

You can remove the brake fluid tank by simply lifting it upwards. The tank nozzles which are under the rubber seals have a kind of indent which prevent easy removal from the seals. However you can use a small lever (like a screwdriver) and lift up the tank - you need to apply some force in order to do that.

After you have the tank separated from the cylinder, be sure to pour loads of alcohol inside in order to clean the brake fluid residues. Maybe you will need around 500ml of alcohol so better get enough. Once the tank is clean inside you can rinse of the alcohol remains by pouring fresh brake fluid.

When time comes to install the tank on the new cylinder, my personal advise is to apply a layer of rubber adhesive around the flat surface of the cylinder seals. This way you will prevent any movement of the tank.

I have been using the 3M rubber adhesive like this one and it comes very handy and practical for auto use. This material does miracles and it is ideal for bonding rubber to metal/plastic.

Scotch-Weld Neoprene High Performance Rubber & Gasket Adhesive 1300 Yellow, 5 oz tube - Shop3M
 
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