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  1. J

    Cat hydraulic Quick coupler stuck?

    I had to remove pin to clean out and wire brush pin. Greased up and re -assembled. Just remove bolt you can see from front of plate, remove pin holding pin assembly to ram and knock out pin from below. Nothing is spring loaded and it goes back together nicely.
  2. J

    JLG 450A Lube for boom pins

    Hi; does anyone know if there is a way to lube the pins on the boom of this unit? the pin that allows the basket to rotate iseems dry as a bone. thanks John
  3. J

    CAT 247B brake release for towing

    Hi; does anyone know if there is a release on the machine so that it can be towed easily? thanks in advance. John
  4. J

    JLG 450A problems

    new issue, when i go to start up the machine rather than the continious beep i get a pulse beep. looked all over in manual but no description. anyone have a clue? thanks jb
  5. J

    JLG 450A problems

    have a leaky valve assembly under the machine that controls the drive function. It is the one with the two solinoid coils on the side of it. seems to be leaking from the top of the valve (there seems to be three plugs of some sort of there. could it be as simple as a o ring on one of those...
  6. J

    JLG 450A problems

    seems all of the above problems are solved. Time for a new one. the machine runs but the idle is very rough until you go to shut it down via the platform red kill switch. the machine continues to run for up to 30 seconds but the idle smooths out and runs well until it stops.? thanks
  7. J

    JLG 450A problems

    well I replaced the two circut breakers, three relays and bases on the din rail that were rusty, along with one contact on the emergency stop that was rusty. Everything seems to function ok, but the function speed knob does not do anything and the functions seem to run a bit slowly. Would i...
  8. J

    JLG 450A problems

    upon further inspection of the control box I found the following items: the circut breaker closest to the 7 sec. delay relays is the one that is triping. I also found rust/corrosion on one side of the contacts on the emergency/red mushroom switch. Also found rust/corrosion on the relay blocks...
  9. J

    JLG 450A problems

    Thank you both for your quick response I will test that as soon as rain stops it is a dual fuel motor
  10. J

    JLG 450A problems

    I have a 1999 450A with a problem on the platform control panel. I replaced the control stick (swing & raise) but I still have a problem once and a while were there will be a loud "click" from the panel and the machine will shut down. If I wait a few minutes (sometimes wiggling some of the...
  11. J

    How Did You Find Us?

    test post # 2
  12. J

    my test to post

    test another one
  13. J

    How Did You Find Us?

    hi there
  14. J

    Test

    test
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