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Smaller Brake Booster Diameter?

Discussion in '6.9L IH & 7.3L IDI Diesels' started by crowmeyocks, Jul 10, 2019.

  1. crowmeyocks

    crowmeyocks Registered User

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    Long story short I ended up putting in a reman booster that fits my rig (and was sure easier to get in than the bigger guy was to get out!) but is smaller than my old one (which was probably working perfectly... the vac pump was just playing games with me).

    Anyone ever tried to use a smaller booster? I have the short bus body, probably about 2500lbs on a fair day, and like the mountains.
     
  2. Cubey

    Cubey Full Access Member

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    The van ones are hard to get ahold of, at least for my 85. The first one I ordered from an Ebay seller was completely wrong, and was also broken in shipping.

    The second I ordered was actually out of stock and wouldn't be available for several months.

    I found one on ebay from autozone in Tennessee. It was right and wasn't broken.
     
  3. crowmeyocks

    crowmeyocks Registered User

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    Well I lucked out then—got a big one from the scrap yard, works good. When I returned the little reman one and got my original back it had some brake fluid running down the front looks like. I really did win the vacuum lottery—my booster, lines, check valve, and belt were all legitimately bad. And now on to the vacuum pump, to complete my bingo card.
     
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  4. Cubey

    Cubey Full Access Member

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    Same for me in the RV. I also disconnected the cruise control line and put a vinyl cap over the hose barb on the tree.
     

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