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67RModel

Pedigreed Bulldog
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Posts posted by 67RModel

  1. 8 hours ago, Mean Green said:

    I have seen many engines come apart like that I used to fix many cat 3500 engines mostly in frac rigs they would run them till they seized and you would have to plasma cut the rods off to get it to turn over to get converter bolts out or they would explode the rods would blow the weights off the crank they weigh about 80 lbs each . I have also seen a turbo wheel come off and bore a 5 in hole in the muffler and it was gone lol 

    Nothing like being on a well pad when they are fracing. Six or so 12 cylinder diesels running wide open throttle. I used to haul sand into a lot of them. What an insane business.

    • Like 1
  2.  

    1 hour ago, 95RD said:

    Yes!  That is the first think I am checking (and the supply hose from the intake) before I do anything to it.  

    Another thing to look for if the supply hose to the LDA checks out OK is the torque limiting valve (if you have one). If its faulty it could be permanently dumping your boost pressure to the LDA regardless of what gear you are in. I don't know if these fail and if they do what is their mode of failure is. You could check it by  capping the line running from the manifold back to the transmission. This will take the torque limiting valve out of the equation for diagnostic purposes. If your sluggishness improves you might have a bad torque limiting valve. As I said before I don't know how common this really is though but easy to check.  

  3. The previous owner of my B81 put "shop built" power steering on it from a much later year Mack R model. The steering column is not original to the truck so I assume its from the donor truck the pump and steering gear came from. My truck also has a 237 Maxidyne in it so mounting the pump was not an issue. Heck, maybe the my engine, steering column, and steering gear all came out of the same donor when I assume the original thermodyne engine gave up. I have no way of knowing as it was all done when I got it. It looks like a very "professional" install, but to the trained eye it is easy to see its not original to the truck. It works extremely well though turning that massive 12.00x24 rubber even when the truck is not moving. 

  4. I think the trucks and trailers start at the end of page 6. Lots of restored antique trucks and trailers. One of those sky high internationals, a really rare snubnose international, a Mack LTL, Mack LJ, and several other Paccar trucks. Its a Mecum auction so the prices will be beyond sky high but at least its something to look at.

    https://www.mecum.com/auctions/east-moline-tractor-2023/lots/page/6/

     

  5. I'm going to start lubing my camel's hump like everyone is saying to do by jacking it up first. I'm just curious does the Mack lubrication literature say to do it this way? Or is this one of those lessons learned through the school of hard knocks?

  6. Somebody might have to start a new thread towards the end of the year for the 2024 election. I bet there will be a mountain of good content over the course of the next campaign. Who are you taking this time around? Trump or DeSantis? 

  7. It says it is government owned. Which makes sense as to why it has an Allison auto. Usually government trucks of this era were left over parts bin Fords and GMCs or International (if you were lucky) specd' out under piggyback contracts so you didn't have to go through a formal bidding process to get a truck. Somebody went all out with on this baby. Doesn't look like its seen much use outside of the sunny South. Them frame rails look new and somebody kept her shined up.

    • Like 2
  8. HaHa yea it definitely wasn't you. I think he bought a KB from somewhere and somehow found out it had also been listed here on the for sale section. He made an account then got really mad at me and dissappeared right after. I have never seen his name pop up since. 

    Is your KB a "regular" distributer with breaker points and a coil for the ignition? I can't imagine a1948 would have a magneto. 

  9. This makes me think back a year or two ago there was some guy on here asking about switching a 6V system over two 12V and I told it wasn't necessary unless he was after a bunch of modern 12V accessories. I offered up a good deal of objective information and he wanted to kill me. I got the impression he was really mad that I suggested keeping it 6V. I actually think it was a International KB too. 

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