I need to change the brake booster on a 1989 Jeep wrangler YJ, is it possible to change it with out unhooking the brake lines? I know it would be easier if I did!
It's really easy, just unhook the 4 bolts holding the master cylinder, then pull it towards the front of the Jeep a few inches,I"ve done this a few times, then unhook the master cylinder, the pin inside on the brake pedal and the four bolts under the hood, and of course the vacuum lines, and pull it right on out, I"ve never had a problem! Bolted up the master cylinder never had to add brake fluid or bleed the brakes, but also remember my Jeep is a 1989 Wrangler, so I couldn't tell you if it works on another model! But it worked great for me more than once!
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