Brake Booster Problems

IMPORTANT: When removing the brake booster, or installing a used one, it is critical that you do not pull out the engine-bay side pushrod of the brake booster. The so-called "reaction disc", which is a solid rubber disc about the diameter of a quarter, can fall off inside the booster. The result will very poor brake feel - you will have a deep spongy pedal and then all of the sudden you will get full braking and the car will stand on its nose.

If this has happened to you: Pry the retainer ring out of the engine-bay-side of the booster, and pull the pushrod out. Turn the booster upside down and shake it until teh reaction disc falls out. Use some tacky grease on the pushrod to get the reaction disc back into its socket. All will be well again.

Learned all this the very very hard way,

Mark