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Thread: Zetor 12045 crystal hydraulic problem

  1. #1
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    Zetor 12045 crystal hydraulic problem

    A mates recently aquired tractor with loader, was working ok, parked up for 6 weeks (outside), now loader doesn't move at all, linkage jerky at best. Added 20 litres of oil, no difference. I am thinking it may have taken in some water, and a possible paper suction filter clogged up. I had it happen on a DB 995. But we have no instruction manuals. There appears to be a few "inspection plates" on the trans housing, maybe one for the suction filter? Can't even identify a level plug or dipstick. Does anyone know of a source of say online manuals? Thanks fellas

  2. #2
    Senior Member davidroberts30's Avatar
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    Re: Zetor 12045 crystal hydraulic problem

    Quote Originally Posted by northmoyne View Post
    A mates recently aquired tractor with loader, was working ok, parked up for 6 weeks (outside), now loader doesn't move at all, linkage jerky at best. Added 20 litres of oil, no difference. I am thinking it may have taken in some water, and a possible paper suction filter clogged up. I had it happen on a DB 995. But we have no instruction manuals. There appears to be a few "inspection plates" on the trans housing, maybe one for the suction filter? Can't even identify a level plug or dipstick. Does anyone know of a source of say online manuals? Thanks fellas
    level plug/dipstick is in the cab floor,probably under a big rubber grommet
    there's a metal screen in the suction side but for the life of me cant remember where it is now
    theres also a lever on the side of the gearbox under the left hand steps that puts the hydraulic pump in and out of gear

  3. #3
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    Re: Zetor 12045 crystal hydraulic problem

    Before you take anything to bits, try this: Park the tractor on the steepest down hill you can find and rev it up. This may cure it as the pump is higher than the oil level and can cavitate if parked up. If this fails then slacken the big banjo bolt that comes out of the pump and start the engine until oil leaks out. If a loader has been fitted it may not have the banjo but a flexi pipe to a spool block, if so then slacken the joint nearest the pump to make sure there is no back pressure. these hydraulics are usually pretty fool proof.

  4. #4
    Senior Member 4wd's Avatar
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    Re: Zetor 12045 crystal hydraulic problem

    We never had that model, but some older Zetors you can disengage the oil pump to save wear
    The lever was easily moved by accident as it's on the floor near your feet.

  5. #5
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    Re: Zetor 12045 crystal hydraulic problem

    The hydraulic pump disengage lever is on the side of the pump housing under the cab on the L\H side. The one on the floor is for the PTO.

  6. #6
    Senior Member davidroberts30's Avatar
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    Re: Zetor 12045 crystal hydraulic problem

    Quote Originally Posted by 4wd View Post
    We never had that model, but some older Zetors you can disengage the oil pump to save wear
    The lever was easily moved by accident as it's on the floor near your feet.
    your thinking about the smaller range

  7. #7
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    Re: Zetor 12045 crystal hydraulic problem

    It's probably air in the system. Check for water also, unscrew the drain plug slightly before starting her up. If there is water on board it will drip out before any oil. No need to take plug all the way out. If there is water in there, it will appear before you unscrew it all the way.

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