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    ASV Hydraulics

    Thank you this was my conclusion as well. Valve on order
  2. C

    ASV Hydraulics

    Aside from a fault in the control valve that I did not notice, is there any way that a closed center spool valve can supply oil flow to both work ports at the same time well centered?
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    ASV Hydraulics

    Put control valve back in both extend and retract ports get oil as soon as the machine is started. Pilot pressure is correct. No cylinder movement either way now, pump doesn’t even load up.
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    ASV Hydraulics

    Hello, I am working on an ASV RC30 CTL which is having an issue of consistently blowing the piston seals from both bucket tilt cylinders. When freshly repacked if you rack the bucket all the way back and let off the controls it will drop about 3/4” then hold a load quite well until you work the...
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    Champion 730A VHP Series V literature

    Thanks it’s for a series 3 though different hydraulic setup. I put a pump on it hydraulics are now strong pressures within spec. Brake failure light is on and brakes are spongey. Jade doesn’t have books to give/sell you but are very helpful with bits of info. Might have to buy a book off eBay $$$
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    Champion 730A VHP Series V literature

    Load sense line is hydraulic controlled I removed the load sense valve block- all the shuttle valves and seats are OK I blew air through the feedback line to the pump didn’t seem to be any issues with the load sense. I wonder if the pump has failed, the shaft seal looks to have recently blown...
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    Champion 730A VHP Series V literature

    I’ve got 250psi on the working line going to valve bank when a function is activated. 0psi on the load sense line
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    Champion 730A VHP Series V literature

    All hydraulics suddenly got really weak is the pressing issue. Was hoping for some pressure specs and to read up on the hydraulic system.
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    Champion 730A VHP Series V literature

    Thanks I reached out to them. I can’t find anything other than a sales brochure for this specific unit online. I’m willing to pay but can’t swing a 500$+ hard copy off eBay.
  10. C

    Champion 730A VHP Series V literature

    Does anyone know where I can get a parts or service book for this unit? I found some old series 3 books but believe there are some significant differences. Thanks
  11. C

    Caterpillar 324e track adjuster

    Ok thank you for this explanation.
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    Caterpillar 324e track adjuster

    PNW01871 Step 1 is remove spring but they group the assembly disassembly for the recoil and adjuster in 1 article. Not sure if it is necessarily required.
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    Caterpillar 324e track adjuster

    Has anyone resealed this style of adjuster without removing the recoil spring? I’ve done bigger E excavators like 336 where the track adjuster is 2 bolts direct to track frame but this style seems to be integral with the recoil spring. Thanks
  14. C

    Cat 312C Travel Motor Failure

    Ok thanks for that information
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    Cat 312C Travel Motor Failure

    Interesting I couldn't find that on SIS thanks. When I add 302-9179 to cart on cat parts site it says its been replaced by 507-1117.
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    Cat 312C Travel Motor Failure

    Not sure the history of the machine the oil had no metal filings and was clean. The gear oil should be separate from the motor internals no?
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    Cat 312C Travel Motor Failure

    I have a Cat 312C serial CBA04192 the right side track started to show signs of failure would intermittently jam up. Now it is locked and won't go either direction the oil goes over relief either direction. I swapped the lines at the control valve from left to right track and problem stayed on...
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    Hitachi pump flow control low

    Thanks this is the procedure I followed. After doing this the throttle dial does nothing from min- until about half. I’ve lost half of the rpm range. Wondering if the throttle motor has failed from somehow doing the calibration. If low idle is set to 950 I only get 1650 or so out of it. Out...
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    Hitachi pump flow control low

    Replacement of the pump controller resolved the issue. Now the throttle does not want to calibrate. Installed new controller, throttle range was correct 950rpm low idle 2000rpm high idle. Figured the book says to do the learning procedure after pump controller replacement so might as well do...
  20. C

    Service truck crane drifting down

    The drifting issue is resolved. The seals must have been originals they crumbled into pieces when removed. Cylinder had an aluminum gland in a steel barrel with a wire lock setup holding it together. Real fun to get apart! Thanks again
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