Re: GM Truck Hydro-Boost Sealkit ?
Rebuilt mine finally. The kit was very easy to install. When I got it apart I noticed that the big main seal wasn't centered, and my piston has some very light scoring where it was contacting the bore. But pulled it apart and cleaned it all and replaced everything except the input seal. It works way better than it did...I do believe the rebuilder also missed hooking up the smaller piston correctly. I still have the slightest weep out the hole on the bottom between the master and the booster, but it is 95% better than it was.
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87 R30 CC Dually, TBI 454, NV4500, zero rust barn find
87 Jeep Grand Wagoneer, 6.5 turbodiesel, 700R4
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