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  1. #11
    Veteran Member SSdoxie's Avatar
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    Jun 2010
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    2,389
    Location
    Cumberland Plateau, TN
    Tractor
    Bobcat CT225

    Default Re: Adding a case drain to excavator

    Case drain line needs to have minimum back pressure possible. It is fine to run it through the oil cooler if cooler has no pressure drop acorss it, or less than 5 psi. Case drain should also have a filter in case of motor bearing failure or internal motor failure, to keep the debris from dumping into the reservoir and contaminating the entire hydraulic system. Northern Tool (among others) has 10 micron return fitlers for about $25 which will handle upto 20 GPM. Case drain line normally will only be running about 10% of the pump flow to the motor. So a 20 GPM pump to motor flow will only be around 2 GPM case drain flow. If you don't go through the cooler, dump it into the tank below the fuild level and make sure it is as far away from the suction outlet as possible. Dumping into the suction or close to it can cause a swirl action that could cause areation to oil going into the pump.
    Dennis

    CT225 w/7TL QA FEL, 60"tooth dirt bucket, 68" smooth bucket, Pallet Forks, Bale Spear. Hydrualic top llin, QH, 48 RC, 60" tiller, Angle blade, Landscape rake, Carry-all, Post hole auger.

  2. #12
    Platinum Member tonyoz's Avatar
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    Sep 2009
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    524
    Location
    Queensland & Far South Coast NSW Australia
    Tractor
    Rayco

    Default Re: Adding a case drain to excavator

    Refer to the way your PT100 is plumbed. Heat is the biggest cause of failure in mulching equipment especialy in open loop hydraulics which is what you have. At the end of the day it's your machine and your money your sending, just hope you spend it wisely and once.
    CTC Mulching
    I'm going to die without any enemies' in the world cause I will outlive the barstards

  3. #13
    Bronze Member ALittleDirtWontHurt's Avatar
    Join Date
    Sep 2012
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    76
    Location
    VIRGINIA
    Tractor
    Terex PT110 Forestry, New Holland LT185b, New Holland TC33, Kubota KX080, Terex PT30, ASV RC50, Rayco C140, Polaris ATP 500

    Default Re: Adding a case drain to excavator

    Thanks for the help so far.....here's what I'm working with. Looks like that top access lid may be the way to go. Adding a case drain to excavator-20121229_152939-jpgAdding a case drain to excavator-20121229_152944-jpg

  4. #14
    Bronze Member
    Join Date
    Jul 2011
    Posts
    66
    Location
    Spokane WA
    Tractor
    Terex, Fecon,

    Default Re: Adding a case drain to excavator

    Give Ed in our shop a call he has done a couple of 80's and he will be able to walk you through the case drain.
    NWTEREX
    www.fmisales.com
    509-927-4071

  5. #15
    Silver Member
    Join Date
    Jan 2007
    Posts
    125
    Location
    Roxton Falls, QC
    Tractor
    Any, as long as there's a DENIS CIMAF head on it ;)

    Default Re: Adding a case drain to excavator

    Or call Gilles, our tech manager (toll free 877-279-2300). Even if it's not for running one of our head, he'll help you no charge. This is our way to say thank you for your good comments on Eric H's post this past November. (Cat 297c, if you read this, don't worry, you will not be forgotten either )
    Frederic Denis
    DENIS CIMAF Inc.
    www.deniscimaf.com

  6. #16
    Gold Member cat 297c's Avatar
    Join Date
    Mar 2009
    Posts
    413
    Location
    Semmes, Alabama
    Tractor
    Cat 299D XHP, Cat 297c, Rayco C140

    Default

    Quote Originally Posted by deniscimafinc View Post
    Or call Gilles, our tech manager (toll free 877-279-2300). Even if it's not for running one of our head, he'll help you no charge. This is our way to say thank you for your good comments on Eric H's post this past November. (Cat 297c, if you read this, don't worry, you will not be forgotten either )
    Just give me a Cimaf Generation 3 180E for my CAT 299D XHP an we'll call it even!!!!!!
    HFM LLC
    251-331-4475
    lifescapes-forestry-mulching.com

  7. #17
    Silver Member
    Join Date
    Jan 2007
    Posts
    125
    Location
    Roxton Falls, QC
    Tractor
    Any, as long as there's a DENIS CIMAF head on it ;)

    Default Re: Adding a case drain to excavator

    Quote Originally Posted by cat 297c View Post
    Just give me a Cimaf Generation 3 180E for my CAT 299D XHP an we'll call it even!!!!!!
    I'll start giving good comments on the Audi R8, if that can land one in my parkway.
    Frederic Denis
    DENIS CIMAF Inc.
    www.deniscimaf.com

  8. #18
    Gold Member cat 297c's Avatar
    Join Date
    Mar 2009
    Posts
    413
    Location
    Semmes, Alabama
    Tractor
    Cat 299D XHP, Cat 297c, Rayco C140

    Default

    Quote Originally Posted by deniscimafinc View Post

    I'll start giving good comments on the Audi R8, if that can land one in my parkway.
    I hear ya!!!
    HFM LLC
    251-331-4475
    lifescapes-forestry-mulching.com

  9. #19
    Veteran Member
    Join Date
    Feb 2008
    Posts
    1,853
    Location
    Orstraya , Ex convict stock , G'day .

    Default Re: Adding a case drain to excavator

    As SS said , the case drain must be below the fluid level in the tank . Most lines going into the tank below the fluid level are drains , a "TEE" into one of these at the tank works well and eliminates the need for welding and drilling .

  10. #20
    Bronze Member ALittleDirtWontHurt's Avatar
    Join Date
    Sep 2012
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    76
    Location
    VIRGINIA
    Tractor
    Terex PT110 Forestry, New Holland LT185b, New Holland TC33, Kubota KX080, Terex PT30, ASV RC50, Rayco C140, Polaris ATP 500

    Default Re: Adding a case drain to excavator

    It appears my tank is pressurized. Would this affect anything installing the line coming in through the top of the tank but returning below the fluid level?

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