1975 case 450 dozer

Byronlenz · Jan 31, 2018

I am tracking down a hydraulic leak and seems to be coming from inside the u frame. Is this hard line plumbed inside or is it just hydraulic hoses? I can't seem to find a diagram of the blade hydraulics. [color=darkred:36ab37ce8a][/color:36ab37ce8a][b:36ab37ce8a]

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dozerbill66 · Feb 1, 2018

(quoted from post at 20:29:14 01/31/18) I am tracking down a hydraulic leak and seems to be coming from inside the u frame. Is this hard line plumbed inside or is it just hydraulic hoses? I can't seem to find a diagram of the blade hydraulics. [color=darkred:6cdaaa997c][/color:6cdaaa997c][b:6cdaaa997c]

I can see it is cold there , you really need to pressure wash that area and start and watch where Hyd. oil is coming from .

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marloweg · Feb 1, 2018

all the lines in the frame are hard and will get holes in them from stuff getting in the frame and rubbing holes in them they are not fun to change out . you can not get new one anymore just replace with GOOD high pressure hyd. hose. good luck because the old piping has clamps that hold the pipe to the frame rail and was put in before the engine was put in no room to get bolts loose. changed mine out when i had engine out and that way you can clean the crud out of the frame rail and it will be backed full

tomtinker · Feb 1, 2018

Just rubber hoses loose in there when new, but get cruded tight after a while,run garden hose in for a while sometimes loosens them. Use adapter to fasten new hose and pull in with old hose.

Byronlenz · Feb 1, 2018

OK thanks guys I figured it won't be a walk in the park. I did finally find a picture of the hydraulic lines.

Byronlenz · Feb 1, 2018

OK thanks guys I figured it won't be a walk in the park. I did finally find a picture of the hydraulic lines.

tomtinker · Feb 1, 2018

The easy redneck way is to just run new hoses out over the hood and down back of the blade,don't ask me how I know.

Byronlenz · Feb 1, 2018

haha thanks but I like to keep things original. If I was in a hurry that's how I would probably do this.

Byronlenz · Feb 1, 2018

well now I have the hydraulic hoses almost out but they are stuck. Inside the frame was a bunch of oil and dirt mix that hardened. Does anyone have experience with replacing these hoses? I have run out of ideas besides cuthing the frame open and I don't want to do that.

1975 case 450 dozer

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