Gonna replace my MC and brake hoses, A couple of questions. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

toms68cst · 09-20-2023, 12:31 PM

I'm getting ready to change out the Master Cylinder and brake hoses on my '68. Everything is stock.

Does it matter which I do first? Should I just bleed the whole works when I'm done?

I see that you need to bench-bleed the MC. Some Youtube videos show bleeding the proportioning valve after MC replacement. I don't see a bleed port on my prop valve. Is this necessary?

Bleeding the brakes otherwise seems pretty straightforward. Sounds like only DOT 3 Synthetic is available these days but should be OK to use.

Any other tips?

09-20-2023, 12:31 PM	#1
toms68cst Registered User Join Date: Jun 2000 Location: Bismarck, ND Posts: 4,296	Gonna replace my MC and brake hoses, A couple of questions. I'm getting ready to change out the Master Cylinder and brake hoses on my '68. Everything is stock. Does it matter which I do first? Should I just bleed the whole works when I'm done? I see that you need to bench-bleed the MC. Some Youtube videos show bleeding the proportioning valve after MC replacement. I don't see a bleed port on my prop valve. Is this necessary? Bleeding the brakes otherwise seems pretty straightforward. Sounds like only DOT 3 Synthetic is available these days but should be OK to use. Any other tips? __________________ Unrestored 68 C-10 CST. Original 327. 4-Speed CH465. 50k or so miles. TREASURER, Drum Brake Club.

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