Quote:
Originally Posted by shermancelmare
93 XJ 4.0L. I swapped the old master cylinder and booster with a new one from a '96 XJ. Now, the brakes begin to drag after it is warmed up (say, after 10 minutes of driving). Smoke coming from front wheels is never a good sign. One it cools down, the drag goes away.
The master cylinder is not overfilled. Could the brake booster push rod need to be adjusted? If so, how is this done?
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Use a straight edge flat against the flange and measure the length of the rod to the tip.
Measure the old one the same way. On the old ones the rod was threaded and I used a pair of channel locks. Any way record the length in case you have a hose collapsed going to the calipers. Normally getting a set that was working on the old vehicle isn't a problem was the gasket installed between the booster and flange.