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Late 1958 D4 7U

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3 years 2 months ago #231489 by projectanavita
Replied by projectanavita on topic Late 1958 D4 7U
We have confirmed the extra fluid to be diesel ... we are going to drain it all out, replace it, then put a ball valve that is easier to turn inline with the supply line as a "quick fix"

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3 years 2 months ago #231491 by bursitis
Replied by bursitis on topic Late 1958 D4 7U
probably the o ring seal between the fuel tower and the injection pump. pretty sure it is a number 8 o ring that can be hpurchased just about anywhere. probably just as easy to fix the oring as to install a valve. and the valve won't prevent the oil from diluting anyway.

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3 years 2 months ago #231494 by trainzkid88
Replied by trainzkid88 on topic Late 1958 D4 7U
fix it properly saves hassle later. diluted oil can destroy bearings and that gets expensive fast. engines can also run on and over rev if the oil becomes too contaminated with fuel and thats real bad as they will keep running till they sieze or break apart.

the other location they can leak is the lift pump seal. both are reasonably cheap fixes and not difficult to do.
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3 years 2 months ago #231517 by 8C 361
Replied by 8C 361 on topic Late 1958 D4 7U
If you are not a purist don't be afraid to cut the supply line. I have done it on several Cats. Half inch fuel hose fits well with screw clamps. There is only gravity pressure, you do not want any air intrusion however.
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2 years 8 months ago #236752 by projectanavita
Replied by projectanavita on topic Late 1958 D4 7U
Back into the swing of things ... mud season here and we didn't use brutus over the winter.

Last we left him with a inline fuel line mod for the diesel and a repaired / cleaned radiator. The problem remaining however was a coolant leak seeming to come from the top right of the radiator AND if that wasn't enough from the mounting screw for the right stabilizing arm off the engine to the radiator ... the latter I think we might have purchased a head gasket but I can't recall.

Really don't want to take this thing off again to braze it so might see about getting some DIKE and throwing that in there ...

Thoughts on the mounting screw though?
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2 years 8 months ago #236754 by neil
Replied by neil on topic Late 1958 D4 7U
I had a leak from the front cover on my 5U that looked like it was coming from the radiator mount. Had to reseal the front cover but that fixed it

Cheers,
Neil

Pittsford, NY
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2 years 8 months ago #236774 by projectanavita
Replied by projectanavita on topic Late 1958 D4 7U
flickr.com/photos/71805301@N05/51344800602/

The two bars at the top of this image go to the engine ... one furthest away is what I am talking about. Will try to get a better photo when I am at property tomorrow.
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2 years 8 months ago #236794 by Ray54
Replied by Ray54 on topic Late 1958 D4 7U
Fix the fuel system with a few bucks of o rings. Some times the o rings go away fast. I thought it was gaining oil on dip stick, and looked thin. Changed oil, did 6 or 7 hours of work and a gal or better over full. Parked in the yard and it gained more sitting. They only run on diesel for lube oil so long then its the big BIG bucks to fix. A very short day with 2 armature wrench turners and all fixed, on my D6.

If I am understanding your last post , you want limb lifters on your canopy? Do not attach them to the top of the radiator. Been there done that, broke top tank. A friend did that with a tractor and had no problems, even being a rather ruff operator. So I start at the frame rail and go up to top of radiator and then back to canopy. A bit more tubing is cheap when compared to finding a top tank and changing it out.
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2 years 8 months ago #236890 by projectanavita
Replied by projectanavita on topic Late 1958 D4 7U
Problem Bolt by callmeburton , on Flickr

Location of the bolt which spits out coolant like it is going out of style when I am turning the machine over.
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2 years 8 months ago - 2 years 8 months ago #236893 by Rome K/G
Replied by Rome K/G on topic Late 1958 D4 7U
Head gasket must be blown from the cylinder to the stud hole, hopefully, or the head is cracked from the exhaust valve seat to the stud hole.
Last edit: 2 years 8 months ago by Rome K/G.
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