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  1. G

    The JLG 40F Boom Lift Dilemma

    I have a John Deere 310, 4WD loader/backhoe. When I replaced the front tires they turned out to be the same tire used on large skid-steers. Skid-steer tires are quite popular and may work on your JLG40????? Just a thought.
  2. G

    The JLG 40F Boom Lift Dilemma

    Thanks OFF. Are there any other advantages to diesel? This is only a hobby machine for 40 acres in WI for trees, roof repairs, small crane, etc., I don't think fuel economy will be much of an issue for me. Will diesel fuel age issues, cold weather starting, etc., be more of an issue than spark...
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    The JLG 40F Boom Lift Dilemma

    I'm considering replacing my 30 HP Wisconsin VH4D engine with a new Kohler CH940-2002 engine. My VH4D needs almost $4000 in repair after the oil pump gear split in two, destroyed the remaining gear train and starved the engine of oil until it seized. I believe the hydraulic pump spool piece...
  4. G

    The JLG 40F Boom Lift Dilemma

    Good luck with the hydraulic Jonesy.
  5. G

    The JLG 40F Boom Lift Dilemma

    I have a John Deere 310 backhoe/loader that has had several hydraulic lines break, even short, small diameter hoses are painful in the pocket book. I can't imagine what replacing everything on the 40F will cost. Keep us posted please.
  6. G

    The JLG 40F Boom Lift Dilemma

    Jonesy, you certainly have ambition. Your cable tray looks great. I see your electric cable cost $1000, do you have any idea what the hydraulic lines are going to be? Makes me wonder if it's worth rebuilding my early 40F.
  7. G

    The JLG 40F Boom Lift Dilemma

    The 12 volt motor on my emergency hydraulic pump appears to be shot. Has anyone replaced one or had it rebuilt?
  8. G

    The JLG 40F Boom Lift Dilemma

    Can anyone tell me the proper engine RPM on a 40F? There is a solenoid attached to my carb linkage, is that to pull the throttle on or off? I still don't have mine running. Any thoughts on a replacement engine I should look at?
  9. G

    New to forum JD310B battery question

    My 310C has two, 12 volt batteries wired in parallel. I don't know how many amp hours they are, but they are about the same size as a large car battery.
  10. G

    The JLG 40F Boom Lift Dilemma

    Hi Guys. You may remember my old 40F, at least I think that's what it is. I got it recently and the two rear pistons were seized with rust and the same two cylinder exhaust valve stems were seized. This was a result of rain/snow water entering view the exhaust pipe. I managed to free them up...
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    The JLG 40F Boom Lift Dilemma

    Got to the bucket today, everything worked. The only thing I didn't test was the high speed travel. I feel very lucky.
  12. G

    The JLG 40F Boom Lift Dilemma

    She breathed fire today!!!! I had to take the heads off again because the back two exhaust valves were rusted solidly open. After I finally got the stems loose, I gave her some clean fuel and much to my surprise she fired right up after having the back two pistons seized up for several years...
  13. G

    The JLG 40F Boom Lift Dilemma

    A gallon of WD-40 in the ACE store in Crivitz, WI cost me $28. A day later I was at Menard's in Green Bay and it was $14.
  14. G

    The JLG 40F Boom Lift Dilemma

    I've been away from it for a while, but I'm going back to it today. How did you know???? Maybe your perfectly timed question will give me luck. I did get the pistons free a couple of weeks ago by filling the cylinders with $22 worth of WD-40 and "encouraging" them to move. Maybe we'll be...
  15. G

    The JLG 40F Boom Lift Dilemma

    Thanks OFF. I was thinking about no-seize but I wasn't sure they would hold their torque if using that. I feel lucky that only 1 out of 34 broke.
  16. G

    The JLG 40F Boom Lift Dilemma

    I can't find a serial number on mine, so don't know the exact production year. I have a summer project I need the machine for and don't have time to do a rebuild of anything. Hoping to get it limping along for the summer and rebuild it later.
  17. G

    The JLG 40F Boom Lift Dilemma

    The motor on mine was seized. After soaking the cylinders in oil for a week, it still wouldn't budge. I pulled the heads off and water poured out. I tried to tap the pistons free, replaced the heads and then filled each cylinder completely full of WD-40. A day later, I actually got the crank...
  18. G

    The JLG 40F Boom Lift Dilemma

    I just talked to my parts man at Bumper to Bumper. He has a WIX 57011 (Napa 7011). He says is has that reverse, mason jar type of thread. It's about $26 list and he will sell it for $16.
  19. G

    The JLG 40F Boom Lift Dilemma

    Looks like a 4D
  20. G

    The JLG 40F Boom Lift Dilemma

    Thanks OFF. That Hastings 424 "appears" to be a standard looking, spin-on filter. I did not see any other attachment method, but I just looked quickly. You're saying it does not thread-on like a modern oil filter????
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