I assume it's a bad thing when you push the brake peddle and hear vacuum rushing inside the car and there is no power assist. After the car had been sitting for a few weeks, started it up for a drive and noticed lots of air rushing when I pushed the brake peddle, it's a '72 with power brakes. Drove it around the block and had brakes but no power assist. Interesting that after a few minutes, maybe 15, it stopped leaking and power assist came back. I assume I have a booster going bad. Who restores them and how hard of a job is it to get it out of the car?
72 brake booster
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Re: 72 brake booster
Hi Jeff,
Removing the booster can be hard. 4 bolts hold it in place on the passenger side of the firewall. There have been threads about the removal in the past so try searching the archives to find them. When I did mine I removed the drivers seat so I could lay on the floor. It's very tight up there and you'll be there a while. Wear safety glasses if you don't wear prescription glasses in case you drop a tool or one of the bolts.Larry
2002 Z51 Convertible
1969 L46 Convertible- Top
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Re: 72 brake booster
The basics are in the service manual, but the difficult part is accessing and removing the 4 nuts that hold the booster to the firewall. They are locking nuts, so they are never loose and you need to use a socket to remove every bit of them. Access is extremely limited, and if you get vertigo at all laying on your back for a long time, this is not the job for you. You will need extensions, u-joint adapters and similar tools to remove the nuts if you do it yourself. In addition a flexible flashlight and safety goggles are recommended because you can't see up in there and you WILL drop a socket or tool on your face.
Best of luck. If it were me I'd check everything else including the check valve on the front of the booster before I would just remove the booster and send it off.
PatrickVice-Chairman (West), Michigan Chapter NCRS
71 "deer modified" coupe
72 5-Star Bowtie / Duntov coupe. https://www.flickr.com/photos/124695...57649252735124
2008 coupe
Available stickers: Engine suffix code, exhaust tips & mufflers, shocks, AIR diverter valve broadcast code.- Top
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Re: 72 brake booster
This has been archived many times. I 4 speed is much worse because of the clutch pedal and rod.
I would remove the IP and steering column. It makes it much easier.
The worst nut is the upper left. When putting it back together I replaced that one nut with a hex coupling nut that is about 1 3/4 inch long with a bit of blue locktit on it.. It makes it a lot easier to put back and take outSteve L
73 coupe since new
Capital Corvette Club
Ottawa, Canada- Top
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