1940 master cylinder repair kit

[rottenron36]

My 1940 master cylinder was apart. Got a rebuild kit that has a rubber washer in it. None of the diagrams show it, where does it go? Thanks Ron

[glennpm]

There is no rubber washer. The "piston stop" is a steel washer.

[Kurt in NJ]

the rubber washer goes in first under the residual pressure valve,then the spring etc.

[rottenron36]

! yes, 1 no, on the rubber washer that came in the kit. Help! Thanks Ron

[Bob C]

How about a picture of it or the size.

[rottenron36]

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same size as the bore, about 1/8 thick, hole in the middle

[cadillac512]

As Kurt said above, the washer goes in the cylinder first, and sits at the very bottom of the bore...clear at the end. Then the check valve and spring, cup and piston. The washer's job is sealing the check valve to the end of the cylinder.

[rottenron36]

Thanks Kurt and Cadillac for your response, you got me on the right track!!!! Ron

[Bruce in southern OH]

Where did you purchase your rebuild kit, thanks