The 800 Runs!

[CasebyCaseMN]

Hello all,
I got the 800 diesel tractor to run! The engine overhaul is performing well. Engine is very smooth, starts easy, and has lots of power. Running it for a while has freed up the governor and the Case-o-Matic drive works very well in all gears in both direct and converter drive. Stays nice and cool and is very clean burning. Only get a light haze at full bore with load.
Thank you to everyone on this site who has helped me through the project!
Now that it is running, I do have a couple of questions. Most importantly, the main rubber fuel line (see pic) into the injection pump rotor head is leaking like a sieve. Maybe a drop every 5 seconds or so when running, slows down when parked. There's no noticeable performance decrease, but I am loosing diesel and would like to avoid that. It appears to be leaking out around the threads, although the threads themselves look to be in good condition. Has anyone run into this problem before, what's the best way to fix it? Even tightened all the way does not stop this leak.

 

[Dieseltech]

If the HOSE is leaking replace it. If the THREADS are where the leak is, use sealer on them SPARINGLY or the hydraulic head may be damaged.

 

[Tgrasher]

I see that your hose has been replaced at some time as I had one made just like it. The collars were too long for the S bend that was necessary for my 730. Got a different one from John Saeli and it worked like the original. I would first try a sealant like Dieseltech suggested. I've had good luck with a Permatex gas/oil resistant, black in color sealant that comes in a small white container. Believe I bought it at NAPA.

 

[CasebyCaseMN]

Thank you very much for the responses. I will attempt the sealer, and will let you know how it goes.

 

[rustred]

even teflon tape will work.

 

[John Saeli]

Hello all,
I got the 800 diesel tractor to run! The engine overhaul is performing well. Engine is very smooth, starts easy, and has lots of power. Running it for a while has freed up the governor and the Case-o-Matic drive works very well in all gears in both direct and converter drive. Stays nice and cool and is very clean burning. Only get a light haze at full bore with load.
Thank you to everyone on this site who has helped me through the project!
Now that it is running, I do have a couple of questions. Most importantly, the main rubber fuel line (see pic) into the injection pump rotor head is leaking like a sieve. Maybe a drop every 5 seconds or so when running, slows down when parked. There's no noticeable performance decrease, but I am loosing diesel and would like to avoid that. It appears to be leaking out around the threads, although the threads themselves look to be in good condition. Has anyone run into this problem before, what's the best way to fix it? Even tightened all the way does not stop this leak.
View attachment 128060

Did you re-torque the heads as CASE says? Very important step!! CASE Says: On the initial warm up, while warm, start w/ the #1 stud in the pattern, back off 1/4 turn, then come back up to torque. Move on to # 2 and ect. If you put the torque wrench on and simply pull, it won't give, but after backing off 1/4 turn, getting a running start, and coming back, you may gain as much as 1/2 turn after the initial 1/4. On the later engines w/ bolts, you will gain 1/2 turn. Very Important!!