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Old 03-16-2004, 02:04 PM
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Exclamation Brake change out from manual to Power Disk

I am in the process of changing out my manual brake system on 71 Chevelle to Vacuum Boosted Power Brakes. I have purchased a new vacuum booster, master Cylinder, vacuum tower for the manifold and all of the associated hoses and other material. I successfully installed all of the new componets. My question is, how do I adjust the rod in the new vacuum booster that makes contact with the new master cylinder. The rod that came with the new vacuum booster has an adjustable screew section that adjusts within the rod assembly. I have adjusted this all of the way in and when I install the new M/C this rod is still preloading the new m/c. I have not started up the engine after this installation and I am curious if the new rod in the vacuum booster will move into the vacuum booster taking the preload off of the m/c. Does anyone know the proper method to adjust this rod that makes contact with the new m/c. Thanks for the help.

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Old 03-16-2004, 03:18 PM
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Who did you get the booster from? I would think they would give you the correct one. When they couple up, there is a very small amount of pre-load and the vacuum boost should self adjust like lifters. I purchase my unit from CPP and it went in like a breeze. When the shop worked on my tranny and did the road test, the guy loved the brake system. We ended up putting one in his truck. Mine where spongy feeling at first, but after a couple of blocks they came right up. Jack the rear and do it in the garage. You will feel it settle in.

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