Do you have any pictures? I'm not experienced with this problem on this machine, but I have seen instances where hydraulic components blow their internal seals and start making a mess through a weep hole. Usually the weep hole is there to prevent pressure build up from causing further damageI have a new to me 1977 40f and it keeps blowing the seal on the turntable gear. I know it’s blowing fluid out of the drive motor but cannot locate the problem. There are two hoses that come from the pump, two that go to the tank, and two that go to a pipe looking thing up top. I don’t know where to start. I do not know what the purpose is for the pipe looking thing but it doesn’t seem to have fluid in it. If it’s supposed to then I may have a restriction in the lines. If not is there a pressure relief valve somewhere that I need to replace? Any help would be greatly appreciated. If I can’t figure it out soon I think I can take out the fill plug on the gear drive and put in a nipple. From there I can run a hose to the top of the tank and let it recirculate the fluid. It runs and operates fine it is just making a mess
Do you have any pictures? I'm not experienced with this problem on this machine, but I have seen instances where hydraulic components blow their internal seals and start making a mess through a weep hole. Usually the weep hole is there to prevent pressure build up from causing further damage
Hey all. Just joined.
Ive read through the first 12 pages so far and have learned a bit. Still getting a grasp on the valve function and which are which.
Im helping work on, what I'm pretty sure is a 40G. The owner says that he thinks it was pieced from two machines. Ive borrowed it for some work on my roof and it has symptoms that show up after several hours of use. it does pretty good until certain functions stop working from the basket. Specifically lower and rotate L&R. Raise still works. Which is an issue when you can raise, but not lower, LOL .
Two things in common when the problems arise. We been running for 4-5 hrs and Ive used the 110v power to run a skil saw for 15-45 min. I was in the basket when these happen. My helper is able to use the toggle switches on the ground to lower.
Popping in to say how glad I am to see this forum is still alive... I'm the proud owner of a brand New-to-me JLG 40f from 1979..... Has the Bertea valves on it, needs new hoses going up to basket tilt and needs a complete overhaul on the wiring. Hopefully I can get it it brought back to life again, as things are definitely not running quite right. I've only made it through 11 pages of the 80 so far, so I'm not going to ask any questions until I finish reading through everything, so much information to digest! One thing for sure I'll need is the wiring schematics, and it seems like OFF is the one that holds these magical documents in their possession. I hope it wouldn't be too much trouble to ask for those