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  1. #1
    Gold Member 2006gmcdmax's Avatar
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    Default John deere 300 lift issues

    I have a John deere 300 industrial. The lift is strong but slow. The guy I bought it from put new springs on the rock shaft and all the fluids and filters. Could it need a new pump or is there a valve somewhere that may be stuck open? He said something about a valve that you have to split the tractor to get too is this true he said it maybe stuck open.

  2. #2
    Elite Member Tx Jim's Avatar
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    Default Re: John deere 300 lift issues

    I bet the problem is the orange filter in the photo Seriously I wonder if PO checked/cleaned trans/hyd sump screen and small filter in frt hyd pump?? I also recommend checking stand-by pressure(2250-2350 psi). It's possible the hyd filter relief valve could be the problem. Does tractor have the option of hyd hi-lo or reverser??
    Attached Thumbnails Attached Thumbnails John deere 300 lift issues-t60044_________un01jan94.gif  

  3. #3
    Gold Member 2006gmcdmax's Avatar
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    Default Re: John deere 300 lift issues

    I have no clue if it has hi and lo or reverser but he said he changed all the fluids and filters he wants 3000 for it only reason I'm buying I never knew there was a screen on the front hydro pump either

  4. #4
    Gold Member 2006gmcdmax's Avatar
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    Default Re: John deere 300 lift issues

    I talked to the guy no reverser or hi an lo on hydros he change one screen on the tranny and the hydro filter the hydro filter on the front he did no change and he put new seals on the rock shaft and replaced some springs

  5. #5
    Elite Member Tx Jim's Avatar
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    Default Re: John deere 300 lift issues

    That's a nice looking industrial tractor. Depending on tractor SN hyd pump filter is parts key # 56 in 1st photo or parts key #17 in 2nd photo.
    Attached Thumbnails Attached Thumbnails John deere 300 lift issues-rp3314_________un01jan94.gif   John deere 300 lift issues-rp3510_________un01jan94.gif  

  6. #6
    Gold Member 2006gmcdmax's Avatar
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    Default Re: John deere 300 lift issues

    Yeah I thought it was a very nice looking tractor I want it for my business or my business I'm starting it would he perfect for my box blade and ok thank you ill try that do these have adjustments on the rock shafts he said something about that too

  7. #7
    Elite Member Tx Jim's Avatar
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    Default Re: John deere 300 lift issues

    The RS control valve seals on JD utility tractors have a history of wearing out then leaking causing hyd problems. If PO renewed o-rings everything in there should be fine. BUT for grins remove hyd filler cap on the rear and with 3 pt raised,engine running look inside hole for spraying oil. No spraying oil then the RS control valve should be GOOD.

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