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Recent content by Gman9700

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    Cat 235 hydraulic issues

    Yessir thank you ! I’m currently just outside Edmonton headed south to visit family for a week waiting on the thaw to let loose of the valleys ! And yeah I did my best to search them but nothing seemed to quite fit what I’m chasing with this machine
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    Cat 235 hydraulic issues

    Filters were done when I received the machine around September of last year when I started into diagnosing this issue, I didn’t do pump drains to check them but it had the fluid done within a few hundred hours of me getting it. I was told it was just a drain and fill when I pulled filters they...
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    Cat 235 hydraulic issues

    I wish that was the case but I’ve run a few of these old pigs and this one has to be run TIGHT for it to have any decent speed but I’ve also found an adjustment for the pump signal pressure that I’m wondering if it could be part of the issue and the pumps might not be reaching a full stroke ?
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    Cat 235 hydraulic issues

    I’ve got it and I’ve found in some places it calls for 350 at partial throttle and 500 at maximum speed which checks with the pressure tests I’ve preformed. Another thought I had is the pump control valve possibly not giving the pump full stroke allowing it to make pressure but not giving me...
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    Cat 235 hydraulic issues

    From what I’ve been able to find spec is 350-500 psi we’ve ran the pilot controls in a good bit to increase the pressure on them and we got a little more out of it with that but not anything significant
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    Cat 235 hydraulic issues

    I’m sorry late night and forgot to add, pulled pressure from pilot system also and had around 480 psi peak while running 100% throttle
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    Cat 235 hydraulic issues

    Thank you for letting me join, I have a cat 235 excavator I’m not sure of the exact year 64R00978 is the serial #, I recently acquired it from another mine who used it with slow hydraulics for years and they are SLOW unless the machine is ran at 100% throttle then it is still slow but it moves...
    • Gman9700
    • Thread
    • cat cat 235b excavator hydraulic slow controls
    • Replies: 16
    • Forum: Excavators
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