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Thread: D9G Coolant flush recommendations???

  1. #31
    Join Date
    Feb 2018
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    419

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    Quote Originally Posted by edb View Post
    Hi Team,
    a list of Cat gauges from the Cat One Safe Source. Be aware that these numbers may supersede by now, the Dealer should be able to confirm this and if so supply a unit with the correct capillary tube length.

    George,
    I agree with Rome K/G in that the two gauge system takes out any guess work for a machine in heavy production work, BUT, certainly at our Dealership we found that, as I said above, the pressure gauge was the weak link in poorly maintained cooling systems and tended to block the capillary tube with crud and so incorrect readings were calculated by the operator--based on the colour code sections of the gauges.
    We always recommended the single gauge.
    As per the scan below for the D9H--1W5170-- I believe as it is now too long ago now to be sure on my part. Also I was under the impression that the two gauge units were superseded--Rome K/G has indicated otherwise and thus I stand corrected.
    As I do not have access to a Numerical Parts Record I cannot define the latest Part Number for a gauge to fit your unit.

    You have a choice of sticking with the problematic 2 gauge system or going to the single gauge as per the O.S.S. Gauge list.
    Cheers,
    Eddie B.

    Eddie, thanks again and I would agree with you that less is more... I understand and would agree that Rome K/G would never have a problem as he maintains and takes care of his equipment.... I bought a dozer with an excellent undercarriage but the maintenance was lacking and to many hands over the years have been on her and there where more quick bush fixes then real permanent fixes... I am of course going through her making sure she is fixed correctly to last another 50 years or so for my son or daughters.... Again thank you....

  2. #32
    Join Date
    Nov 2007
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    NW Ohio
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    Thank you George. The main thing to check and make sure is working is the pressure regulating valve on top of the radiator. If the rad. core is good and not leaking then it should keep correct pressure.

  3. #33
    Join Date
    Feb 2018
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    419

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    Quote Originally Posted by Rome K/G View Post
    Thank you George. The main thing to check and make sure is working is the pressure regulating valve on top of the radiator. If the rad. core is good and not leaking then it should keep correct pressure.
    Will do Rome K/G is it probably good practice to just go ahead and replace it anyway? Cheap insurance... Again I do not know when it was replaced or it might be original... I am leaning at just buying the water pressure gauge as I have an original one that is reasonable in price vs a new one from Cat that is $114. I don't want to put in an aftermarket.... I cannot find the where to put the water pressure line I was told it is on top of the radiator.. The only place I see is down by the water pump there is a line connection that is closed off now...

    Happy Memorial Day Everyone...

  4. #34
    Join Date
    Nov 2007
    Location
    NW Ohio
    Posts
    4,248

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    Should be a place on the back center or engine side of the top radiator tank for the fitting, parts book should show it.

  5. #35
    Join Date
    May 2018
    Location
    South Australia
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    129

  6. #36
    Join Date
    Feb 2018
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    419

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    Quote Originally Posted by Misterskill View Post
    Mine does not have one... It is a later D9G and I wonder if they went to the water pump housing? As I have a fitting there...

  7. #37
    Join Date
    Nov 2006
    Location
    Corralitos, Ca.
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    15,386

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    66A1 to 3951 had heat indicator only (9H1486)
    66A3952 to D9H 90V9437 used both heat and pressure indicators.
    90V9438-up went back to single heat indicator (7N7084)

  8. #38
    Join Date
    Feb 2018
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    419

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    Quote Originally Posted by Old Magnet View Post
    66A1 to 3951 had heat indicator only (9H1486)
    66A3952 to D9H 90V9437 used both heat and pressure indicators.
    90V9438-up went back to single heat indicator (7N7084)
    Thanks Old Magnet... I went ahead and purchased the water temp gauge 200-5234 This was the updated part number that EDB posted on this link... My previous dial that I purchased less then a year ago was 224-3344 it needed a pressure gauge to compliment the gauge that I purchased.... I am thinking my D9G was a late model and the dial I took off was a single dial and I went by my parts book which called for the 224-3344.... Some waste of time and money but check out my picture of my Oil Cooler and you can see that it wasn't that much of a waste....

    I went ahead and listened to Rome K/G and replaced the pressure regulator for insurance purposes.... I got all new gaskets for the oil cooler and of course the appropriate o-rings... Couple new hoses and clamps off the water pump and a cleaned radiator both inside and out as well as the oil cooler itself and I am optimistic we will have a D353 that runs the way she is suppose to... Oh I forgot to mention bought 2 new thermostats/resistors that where not present and replaced that as well.... The only thing I did not touch/rebuilt was water pump.... With any luck it will stay that way.....


    Thanks for all your guidance and patience.... Would like to log some seat time on the old girl..... Oh one last thing.. I love my D9G... When I was at the cat dealer they had a D9T for $485,000 and of course used but looking at the ripper I kinda laughed as it was more then half the size smaller then my old girl and for being such a newer machine high track it had a lot more rust then I would like for a used half of million dollar machine.... I wonder if she (D9T) will be even functional in 50 years????? I think not.....

  9. #39
    Join Date
    Dec 2019
    Location
    Pouce Coupe, BC Canada
    Posts
    198

    Default Congrats George!

    i too hope you get some seat time!! FUNN time!

    -i had a lot of TLC involved with my rescue...it takes time...but a steady approach will get you there...keep your eye on the prize
    Caterpillar D6C 99j

    Tax me, I'm Canadian

  10. #40
    Join Date
    Feb 2018
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    419

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    Quote Originally Posted by kittylover123 View Post
    i too hope you get some seat time!! FUNN time!

    -i had a lot of TLC involved with my rescue...it takes time...but a steady approach will get you there...keep your eye on the prize
    Thank you Kittylover and all those that have encouraged me and provided insight when I was clueless. I have indeed learned a lot about her and have fixed with everyone’s help a lot of the pressing issues...

    I am confident I will get that seat time.

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