Are these factory power brake parts?

Suspension, Brakes, Tires, Wheels etc..

Are these factory power brake parts?

Postby JLeather » Wed Apr 05, 2017 5:39 am

My brake m/c is leaking, and my power booster also appears to be leaking (won't hold vacuum when tested with a hand pump) so I thought I'd replace them. I wanted to confirm, however, that these are factory '67 parts and not sourced from a later vehicle. Can anyone confirm that this is a factory '67 power booster?

https://flic.kr/p/SkEsjM

I also found it strange that the truck has what looks like a proportioning valve, when it is still has drums on all 4 corners? Or is this just a block to couple the chassis brake lines to the m/c brake lines? Is it factory?

https://www.flickr.com/gp/53055348@N04/26f2Z0
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Re: Are these factory power brake parts?

Postby powerwagon54 » Wed Apr 05, 2017 8:14 am

both items are factory
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Re: Are these factory power brake parts?

Postby PwrWgnDrvr » Wed Apr 05, 2017 9:57 am

JLeather wrote:My brake m/c is leaking, and my power booster also appears to be leaking (won't hold vacuum when tested with a hand pump) so I thought I'd replace them. I wanted to confirm, however, that these are factory '67 parts and not sourced from a later vehicle. Can anyone confirm that this is a factory '67 power booster?

https://flic.kr/p/SkEsjM

I also found it strange that the truck has what looks like a proportioning valve, when it is still has drums on all 4 corners? Or is this just a block to couple the chassis brake lines to the m/c brake lines? Is it factory?

https://www.flickr.com/gp/53055348@N04/26f2Z0

Its not a proportioning valve. That is a common misconception. Its a brake safety switch that senses pressure differential between the front and rear circuits and illuminates the red light on the dash indicating a system problem.
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