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Hole in hydraulic oil cooler
Posted: Thu Jan 12, 2023 4:08 pm
by Eugen
There was a small leak which seemed to get worse over time so I had a look. Found it. Someone in the past tried to fix it with some sort of green melted plastic, and it held for a while until it didn't. Unfortunately all my parts tractors have the other style radiator, with inlet on the other side as the outlet.
Tried fixing it with aluminum stick and the torch.
Didn't hold. I'm thinking maybe JB Weld. What do you guys think?
Re: Hole in hydraulic oil cooler
Posted: Thu Jan 12, 2023 4:30 pm
by propane1
I would think it would have to be cleaned very good to get some thing to stick. Maybe you did that though. Was thinking those aluminum rods used with a torch at the first when I started reading the post. J B weld might work.
I’ll keep thinking.
Noel
Re: Hole in hydraulic oil cooler
Posted: Thu Jan 12, 2023 5:12 pm
by DavidBarkey
Eugen wrote: ↑Thu Jan 12, 2023 4:08 pm
There was a small leak which seemed to get worse over time so I had a look. Found it. Someone in the past tried to fix it with some sort of green melted plastic, and it held for a while until it didn't. Unfortunately all my parts tractors have the other style radiator, with inlet on the other side as the outlet.
BE9950AD-17DD-480B-B28E-6E68FD8429C3.jpeg
CA00DBE7-6F47-4010-9491-43027F817A9D.jpeg
Tried fixing it with aluminum stick and the torch.
8C447898-EB2F-4E75-B784-FD4D47E96211.jpeg
Didn't hold. I'm thinking maybe JB Weld. What do you guys think?
I will look and see if I have one .
Once the aluminum get contaminated with oil , it is very hard to get it clean enough to get a proper seal .
What tractor did it come off ?
Re: Hole in hydraulic oil cooler
Posted: Thu Jan 12, 2023 5:15 pm
by DavidBarkey
I have seen this damage before . So what I do now is to put a sleeve of clear tubing (Fuel hose) over the screw so that it comes loose it will not do this kind of damage to the cooler .
Re: Hole in hydraulic oil cooler
Posted: Thu Jan 12, 2023 5:22 pm
by Eugen
Well, tried my best to clean it, even filed the area some. This is from the 444 on snow duty. There's no real pressure there. Maybe a piece of hose with ring clamps will do. I'll see what I come up with tonight.
Re: Hole in hydraulic oil cooler
Posted: Thu Jan 12, 2023 5:27 pm
by RoamingGnome
An "old school" rad shop should be able to flush out that cooler and braze up the leak...
Out of curiosity were you using a brazing rod like this
https://www.princessauto.com/en/7-pc-1- ... 0008676884 -
There shouldn't be much pressure going through the cooler - If you had it really cleaned up JB weld might do the trick...
Re: Hole in hydraulic oil cooler
Posted: Thu Jan 12, 2023 5:50 pm
by Eugen
Yes, I used this brazing rod
Either it wasn't clean enough or I didn't heat it up enough out of fear I melt the spot.
Re: Hole in hydraulic oil cooler
Posted: Thu Jan 12, 2023 6:44 pm
by RoamingGnome
That rod should do the job, - one of the issues I found with welding / brazing something like an oil cooler or hyd tank was residual oil could creep into the joint when the base metal heats up and prevent a 100% seal with no pinholes.
You are on track for a short term fix - rubber hose, slit lengthwise and held on with lots of hose clamps (skinny ones if you have them) and then afterwards some sandpaper, lots of brake clean and give the JB weld a try - I've used it to patch more than a few rotted oil pans and fuel tanks.
Re: Hole in hydraulic oil cooler
Posted: Thu Jan 12, 2023 9:20 pm
by Eugen
RoamingGnome wrote: ↑Thu Jan 12, 2023 6:44 pm
That rod should do the job, - one of the issues I found with welding / brazing something like an oil cooler or hyd tank was residual oil could creep into the joint when the base metal heats up and prevent a 100% seal with no pinholes.
You are on track for a short term fix - rubber hose, slit lengthwise and held on with lots of hose clamps (skinny ones if you have them) and then afterwards some sandpaper, lots of brake clean and give the JB weld a try - I've used it to patch more than a few rotted oil pans and fuel tanks.
I cleaned it as well as I could with brake cleaner but didn't flush the oil from inside. I was afraid to heat it up too much because it's pretty thin. I once did that on a different job and the spot I was trying to fix melted so fast.
Cleaned it again and rubbed some sandpaper on a larger area, then applied jb weld. Will test tomorrow.
Thanks guys! And
@DavidBarkey , I applied your method with a piece of hose around around the bolt, great idea!
Re: Hole in hydraulic oil cooler
Posted: Fri Jan 13, 2023 4:31 am
by propane1
Hope you got it Eugen. Lucky me I have a tractor buddie only 5 minutes away from me who does that aluminum welding work. He’s fixed a few things for me over the years.
Noel
Re: Hole in hydraulic oil cooler
Posted: Fri Jan 13, 2023 3:15 pm
by Eugen
Brazing with the aluminum rod would have been the right way to fix it, but my brazing skills are not up to par.
Re: Hole in hydraulic oil cooler
Posted: Sat Jan 14, 2023 8:36 am
by Harry
I have TIG welded a few of mine and cleanliness is the key. Heat it up a little then wire brush it with a SS brush. A regular brush would put carbon in the area. I also have used JB Weld with success. Hope your repair is successful.
Harry
Re: Hole in hydraulic oil cooler
Posted: Sat Jan 14, 2023 10:36 am
by DavidBarkey
@Eugen If you can not get that one fixed . I have one , but it is still on the parts frame in the back tent. So you would need to bring a couple of wine corks to plug the hoses when we cut it off .
Re: Hole in hydraulic oil cooler
Posted: Sat Jan 14, 2023 4:31 pm
by Eugen
DavidBarkey wrote: ↑Sat Jan 14, 2023 10:36 am
@Eugen If you can not get that one fixed . I have one , but it is still on the parts frame in the back tent. So you would need to bring a couple of wine corks to plug the hoses when we cut it off .
Thank you Dave, I think it's fixed momentarily. Let's see if it holds.
Re: Hole in hydraulic oil cooler
Posted: Sat Jan 14, 2023 5:38 pm
by DavidBarkey
Eugen wrote: ↑Sat Jan 14, 2023 4:31 pm
DavidBarkey wrote: ↑Sat Jan 14, 2023 10:36 am
@Eugen If you can not get that one fixed . I have one , but it is still on the parts frame in the back tent. So you would need to bring a couple of wine corks to plug the hoses when we cut it off .
Thank you Dave, I think it's fixed momentarily. Let's see if it holds.
You know where I am if it doesn't .
Re: Hole in hydraulic oil cooler
Posted: Sat Jan 14, 2023 5:45 pm
by RoamingGnome
Good to hear you've got it licked... Rubber hose and clamps or did you go with JB Weld?
The cooler on my 446 is the same style - when I'm out in the tent garage tomorrow I'm going to pull the screws and look at mine...
Re: Hole in hydraulic oil cooler
Posted: Sat Jan 14, 2023 6:19 pm
by Eugen
RoamingGnome wrote: ↑Sat Jan 14, 2023 5:45 pm
Good to hear you've got it licked... Rubber hose and clamps or did you go with JB Weld?
The cooler on my 446 is the same style - when I'm out in the tent garage tomorrow I'm going to pull the screws and look at mine...
I used jb weld. Most likely my wire brush was not clean, so I used clean 100 grit sandpaper, applied jb weld to a larger area, and allowed it to stay in the hot air coming from the diesel heater. In 20 minutes it was rock hard. Not sure how it behaves in regards to heat/cool cycles, we'll see.
Re: Hole in hydraulic oil cooler
Posted: Sun Jan 15, 2023 6:33 am
by DavidBarkey
Eugen wrote: ↑Sat Jan 14, 2023 6:19 pm
RoamingGnome wrote: ↑Sat Jan 14, 2023 5:45 pm
Good to hear you've got it licked... Rubber hose and clamps or did you go with JB Weld?
The cooler on my 446 is the same style - when I'm out in the tent garage tomorrow I'm going to pull the screws and look at mine...
I used jb weld. Most likely my wire brush was not clean, so I used clean 100 grit sandpaper, applied jb weld to a larger area, and allowed it to stay in the hot air coming from the diesel heater. In 20 minutes it was rock hard. Not sure how it behaves in regards to heat/cool cycles, we'll see.
Did you use a stainless steel wire brush ? Normal steel brushes will contaminate the aluminum with carbon . Any oil left in the cooler will wick to the heat as well .
Re: Hole in hydraulic oil cooler
Posted: Sun Jan 15, 2023 10:18 am
by Eugen
I did not have a ss brush. I've learned this now from
@Harry and you.
Re: Hole in hydraulic oil cooler
Posted: Tue Jan 17, 2023 11:25 am
by THEOTHERHALF
sure hope this fix works for you, after its cured maybe clean real good again and apply another coat to trap first coat in between, I have a cooler leak in a wilmar wrangler, have it sitting on work bench now, been searching everywhere i can think of to replace it, so far no luck, had it repaired at local radiator shop but started leaking about 3 hours later, kyle