pressure bleeder leak down 60 single cab dual master cylinder

[roadkingdoc]

I am using a pressure bleeder on a dry newly assembled brake system. when applying pressure to the system via the master cylinder cap hook up I am very slowly losing pressure. I apparently have a leak some where behind the drums. as all the outer line fitting are not leaking. I am guessing the slave cylinders or lines are not air tight. after I pull a drum how do I stabilize the shoes so I can pressure test the cylinders and lines? thanks

[chrisflstf]

You can adjust the shoes so they are as tight as you can get them, prior to bleeding. That will help take up slack initially

[busdaddy]

To pressurize the system with the drum off you'll have to remove the shoes and put a C clamp on the pistons to keep them in the cylinder.
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[BarryL]

[mr white]

Busdaddy is correct. Tighten those sucked down good.

[roadkingdoc]

thanks for the help guys. there is no fluid mess because there is no fluid, yet. the system is dry.

[sgellis]

[roadkingdoc]

found the problem! about a 6mm crack in side of mc reservoir. can I repair this with an epoxy of some kind? what is the reservoir made of? thanks

[pyrOman]

I’d just get a new one.
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Some people are so busy being clever they don't have time enough to be wise.

[Alan Brase]

In a pinch you could likely weld it with soldering iron type heat and filler rod of the correct material. Pretty standard procedure in body shops these days. Are you using a 1967 type reservoir? Repops are pretty easily available.
_________________
Al Brase
Projects: 67 sunroof bug, 67 Porsche 912 Targa, 70 Westy
Dec 1955 Single Cab pickup WANT 15" BUS RIMS dated 8/55, thru 12/55
To New owners: 1969 doublecab, 1971 Dormobile
Vanagons:
80 P27 Westy JUL 1979, 3rd oldest known US
83 1.6TD Vanagon, 87 Wolfie Westy daily driver, swap meet home

[roadkingdoc]

thanks again, i repaired with epoxy. its holding now

[Alan Brase]

Curious, did you talk about the conversion to dual circuit elsewhere? If not, what parts did you use? This is one upgrade that is quite worthwhile. I probably will do it to my 56.
Al
_________________
Al Brase
Projects: 67 sunroof bug, 67 Porsche 912 Targa, 70 Westy
Dec 1955 Single Cab pickup WANT 15" BUS RIMS dated 8/55, thru 12/55
To New owners: 1969 doublecab, 1971 Dormobile
Vanagons:
80 P27 Westy JUL 1979, 3rd oldest known US
83 1.6TD Vanagon, 87 Wolfie Westy daily driver, swap meet home

[Eric&Barb]

[roadkingdoc]

there is a good sticky on the subject