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  1. D

    Hitachi 120-5

    No problem at all Steve I have checked this previously it’s at the correct oil level I will have a look at your other post and get back to you then I am going to start draining hydraulic fluid this evening when I’m home and change out for 46
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    Hitachi 120-5

    I haven’t noticed any problems with the booming down when cold or warm but I think my best bet is to drain the hydraulic oil and replace with 46 and change all filters again and then go from there I have also been told it could be a faulty solenoid somewere but the advice I’ve got locally...
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    Hitachi 120-5

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    Hitachi 120-5

    It has more than likely ran for 150 hrs on the 32 oil maybe a bit less if I can get a video maybe of the problem occurring but it will more than likely be a week or two
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    Hitachi 120-5

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    Hitachi 120-5

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    Hitachi 120-5

    I have more than likely added around 20-25 gallons of 32 due to busting hydraulic hoses in the past 2 years as I am unsure of what age the machine acctually is I was told at the time by someone that hyd 32 was the correct oil but this obviously isn’t the case it’s no problem I can drain all of...
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    Hitachi 120-5

    Thanks uffex what filter is the strainer filter ?
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    Hitachi 120-5

    There is a surging sound as if the machine is starving itself of oil now I have spoken to a guy today and he has told me that I have the wrong hydraulic fluid in it I have hydraulic 32 oil in the machine and he has told me it needs 46. It does get more frequent as the machine heats up as it...
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    Hitachi 120-5

    Thanks lads I see some of the studs is rung off the top valve but it is still holding pressure when you push the top of this valve you can release the pressure so it is holding I will have get new filters for it and get back to you but by the sounds of your replies it must not be anything to get...
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    Hitachi 120-5

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    Hitachi 120-5

    Hi all, I have a hitachi EX120-5 not sure what the problem is every now and again it starts to get very jittery sounds as if it is low on oil or air in the system if you swap the digging setting to a different one on the dash panel or even stop for a minute it comes back to itself digger has...
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