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  1. AZ Highlander

    Bad Master Cylinder?

    So, that worked. Got the master to bleed. Was obviously sucking air back into the master through the rear line before. Finger was a one way valve over the rear line hole. Success! But the saga continues…. Went to bleed the right rear, fluid started coming out! Success! Then I heard a leak...
  2. AZ Highlander

    Bad Master Cylinder?

    The friend I got the master from told me to remove the lines off the master and use my fingers over the holes to prevent air from getting sucked back in while my son pumps the pedal. Will try that technique later this afternoon. Thanks for the tips guys!
  3. AZ Highlander

    Bad Master Cylinder?

    Thanks Casey. I was hoping to avoid buying the kit to bleed back into itself, but I may need to bite the bullet. Bleeding without it isn't working for me yet.
  4. AZ Highlander

    What have you done to your square lately??

    yeah, I think most, if not all of the really bad potholes were west of Flagstaff. They happened this past winter in early 2023.
  5. AZ Highlander

    Bad Master Cylinder?

    It is showing Bleeding the master cylinder is not working. I could be doing it wrong, but can’t get all the air out of the master. Isn’t that the first thing to do? From all I’ve read and watched, you can bleed the master on or off the vehicle and it doesn’t need lines attached.
  6. AZ Highlander

    Bad Master Cylinder?

    Same result with my friends master cylinder. It seemed like the rear was bleeding ok for the first crack, then got worse the next few times, then this on the fourth or fifth
  7. AZ Highlander

    What have you done to your square lately??

    You’re not joking Paul. Have you driven on I40 much this year west of Williams? Pothole city.
  8. AZ Highlander

    Bad Master Cylinder?

    Got one from a friend but haven’t had a chance to install it yet
  9. AZ Highlander

    Bad Master Cylinder?

    Thanks Eric. I have that one in my cart as I type this. I plan to order it immediately after a failed bleed attempt on the one I am picking up from my friend.
  10. AZ Highlander

    Bad Master Cylinder?

    I plan to. Not getting fluid out both sides of the master cylinder at the moment however.
  11. AZ Highlander

    Bad Master Cylinder?

    It turns out I have a friend in the next town over with a master cylinder he pulled and kept around after he installed hydroboost. Things are looking up!
  12. AZ Highlander

    Bad Master Cylinder?

    tried both. no dice.
  13. AZ Highlander

    Bad Master Cylinder?

    with engine on or off?
  14. AZ Highlander

    Bad Master Cylinder?

    So, I have replaced the hoses, hard lines on the axle, proportioning valve, cylinders, calipers, and all pads, springs, etc. Blew out the rear line with compressed air from proportioning valve to block on the rear diff. Made a mess. Got flow to front just fine still. No flow to rear. No flow to...
  15. AZ Highlander

    What have you done to your square lately??

    yeah, I wouldn't want that interrupting my hunt, nor having to wrench out there in the rain. Coming back to trailer it home wouldn't be a happy trip either. Let us know what happened this time.
  16. AZ Highlander

    What have you done to your square lately??

    way to see the silver lining. On the other hand, if you were actually out in the middle of stalking elk, it would be a better spot to have to spend some time. I hope you get it fixed quickly.
  17. AZ Highlander

    What have you done to your square lately??

    oil and filter change for the 350 sbc today!
  18. AZ Highlander

    What have you done to your square lately??

    I have firm pedal as well. Front is flowing as expected. I got rear flow to the rear hose block on the rear diff last week, changed nothing upstream of that junction, but now have no flow there either. Maybe I will take the compressor and blow out the line from the valve to the junction on the...
  19. AZ Highlander

    What have you done to your square lately??

    Thanks Ajax. I had tried that a couple times. Plenty of fluid coming out the driver's front bleeder when I mashed the pedal with just that bleeder open. Engine running. Didn't hear a click though. Might be old junk stuck somewhere, maybe in the valve? These brakes were seriously neglected. Only...
  20. AZ Highlander

    What have you done to your square lately??

    Based on what I've read, the valve shuts off the lines that are low on pressure. Is that not correct? Here is a thread that discusses the brass brake valve and the problems/solutions I am attempting: https://www.gmsquarebody.com/threads/proportioning-valve-combo-valve-woes.9188 Thanks for the...
  21. AZ Highlander

    What have you done to your square lately??

    Brakes wouldn’t bleed out back. No fluid to the rear hose either. I checked the proportioning valve on the frame rail up front with a test light. Sure enough, grounded, which means it isn’t letting fluid to the rear lines. Tried removing the switch, but broke it. What now? New brass valve? Which...
  22. AZ Highlander

    What have you done to your square lately??

    nice work @Copymutt ! I did similarly this weekend. Got the drums painted too.
  23. AZ Highlander

    What have you done to your square lately??

    I also got my tail lights working today! It had been nearly a year without them.
  24. AZ Highlander

    Squarebody Down! HELP - Member Roadside Assistance Volunteer Map

    Anyone else need me to add them to the map?
  25. AZ Highlander

    Wrong brake calipers?

    Yes, each us marked R or L and I made sure they were installed on the correct side. Looks like that nub is not supposed to be there.

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