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Thread: Automotive Booster rod measuring tool

  1. #1
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    dtech's Tools

    Automotive Booster rod measuring tool

    Automotive Booster rod measuring tool-20150904_090457s.jpg

    Hi I needed a tool to properly measure a brake booster rod to master cylinder for proper adjustment.
    Here is what I made:
    The tool is made from 3/4 by 3/16 inch by 7 inch long steel pieces.
    The brace is welded in approx 2/3 of the way of the legs leaving 2 1/2 inches and 3 1/2 inches to either side. The width of the legs apart is 2 3/4 inches on the outised and 2 3/8 inches on the inside. The screw is simply 5/16 inch threaded rod exactly 7 inches long (precisely the length of the legs of the tool) The one end is chamfered to fit inside the the brake booster plunger and the other end has a nut welded on and is ground flat.

    I use it to quicly check adjustment and booster or pedal return on a system I end up replacing a master cylinder on.
    45 Best Harbor Freight Tool Modifications

    Last edited by dtech; 06-02-2016 at 06:59 PM. Reason: To add details for readers to build one.

  2. The Following 2 Users Say Thank You to dtech For This Useful Post:

    Jon (09-04-2015), kbalch (09-04-2015)

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    500+ Homemade Tool Plans

    Thanks dtech! I've added your Brake Booster Rod Measuring Tool to our Brake and Measuring and Marking categories, as well as to your builder page: dtech's Homemade Tools. Your receipt:

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    First time for me to see a measuring tool like this. Beat the trial and error method I'm used to.


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