Allis B No oil pressure

Chrisallis

New User
I put the 1 bottom plow on my B this weekend and then took the cap off the magneto and cleaned the points. Unfortunately I could not find any marks on the fiber gear to get it lined back up. I got that problem solved but in the process of getting it timed it did back fire two or three times. Now its running again but when I took it to the field and started plowing I noticed there was no oil pressure showing on the gauge. I went back to the garage and unscrewed the gauge while the tractor was still running, no oil. Then I unscrewed the line going to the oil filter, still no oil? I'm not sure if the backfiring had anything to do with it or not but I have no oil pressure now. Any ideas?
 
Has it sat a long time with out running?? If it has the pump may have lost prime so you need to prime the oil pump
 
It most likely as old said has lost its prime. Fastest and easiest way to prime it would be to remove the filter and fill the stand pipe with oil, let it seep down and fill again. Put the filter back on and try it. I personally like to put a gas line hose over the stand pipe and fill that and start with the hose in a can where I can watch the oil come out and start the engine with out making a mess. You don't make a mess with the filter back on but I like to see the oil.
 
Mag and oil pressure have nothing in common so you have to have an odd problem or as I said lost prime.
 
I got a chance to work on it this evening and it was the oil pump that had lost its prime. Until yesterday I didn't even know that was possible. So I took off the oil filter and put an old fuel hose on the standpipe like was suggested. Then I put a cap off a bottle of gear oil onto a fresh quart of oil and forced oil down the pipe a couple times. The I replaced the oil filter and started the tractor and slowly the oil pressure came into the normal range. Thanks for the advice, I don't know if I would have ever figured this out without your help. :D
 

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