This will determine the proper length of the push rod prior to installation of the yoke and will assure a push rod to slack adjuster angle greater than 90 with the chamber at zero 0 stroke. No preloaded like mentioned above a scant amount of play to about 116 good to have a little play in the pedal to booster also a vacuum plug on the brake light switch will keep it from rattling.
Brakes
Brake push rod length. This will cause your soft pedal. Onto the push rod b. Turns out my push rod needed adjusted. You will need to use pliers for the push rod to be adjusted accordingly. Install the appropriate style. If it measured over two inches you will need to extend the push rod length.
Turn the adjusting nut on the push rod inward or outward to shorten or lengthen the rod. Pedal is more firm now and brakes much better. Remember your free play travel length on your brake pedal. White logo shirt https. See figure 1 mark 1. My brake pedal was super soft after a brake booster replacement.
If the a dimension on a type 30 installation measured 5 inches and the yoke. Tighten the holding nuts to the bracket studs 100140 lb. Place the brake chamber into the appropriate brake assembly bracket. Using a square mark the push rod at the 90 setting from centerline of s cam shaft to push rod. If this distance is greater than 0020 when you first push the pedal you will have to overcome this distance and get the pin to the master cylinder. Master power brakes recommends that the distance between the pin from the booster and the hole in your master cylinder be approximately 0020.
From mark 1 measure back toward the brake chamber mounting surface in accordance with chart a x dimension make a second mark and cut the push rod at mark 2 see figure 1. Again mark the rod. If the rod is already too short remove the original shims. If you cant make adjustments onto the push rod itself you can use a shim to shorten the rod. 4 adjust the push rod to access the push rod the cylinder needs to be disconnected first. Have your assistant gently apply the brakes to force the push rod out of the booster so you can see the adjusting nut.
Measure the distance from the centerline of the s cam to the centerline of the push rod see figure 2 dimension athis measurement should be equal to the length of the brake. In most cases the length will be roughly020. The push rod has a nut which can be turned outward or inward to increase or decrease its length.
Gallery of Brake Push Rod Length
