Hey guys, I've lurked around here for a couple years mostly finding answers to a lot of my tractor conundrums.
I find myself back to ask a few more. I recently got a bison II 25 hp diesel tractor basically free. When I got this tractor it had water in the tank but the fuel line was not attached to the pump. It had sit for a few years never cranked.
The plungers were stuck. I did unstick them with light tapping of a brass rod. I am a master machinist and understand tolerances so I did nothing more than wipe them with solvent, oil then reinstall.
The tractor is a two cylinder as I had not mentioned. I had to pull the tractor off with a truck as I suspect the rings were lightly stuck in the pistons. At first I had tons of blow by but after five mins of run time it is basically steam from oil fill.
It starts and runs well with no smoke. However the exhaust is mildly warm to touch after five mins of runtime.
My question is this, it sounds like I hear a slight knock toward the front cylinder. very faint.
What exactly would you all do to make sure this tractor is field ready.
How would you inspect the knock?
Since the plungers were stuck maybe the knock is pump timing?
It is hard to get parts for this tractor so I want to make sure I don't overlook and do something entirely stupid and end up with trash. I do what I have to based on risk reward and worth of the ole tractor but would like to get it to work in the field.
I find myself back to ask a few more. I recently got a bison II 25 hp diesel tractor basically free. When I got this tractor it had water in the tank but the fuel line was not attached to the pump. It had sit for a few years never cranked.
The plungers were stuck. I did unstick them with light tapping of a brass rod. I am a master machinist and understand tolerances so I did nothing more than wipe them with solvent, oil then reinstall.
The tractor is a two cylinder as I had not mentioned. I had to pull the tractor off with a truck as I suspect the rings were lightly stuck in the pistons. At first I had tons of blow by but after five mins of run time it is basically steam from oil fill.
It starts and runs well with no smoke. However the exhaust is mildly warm to touch after five mins of runtime.
My question is this, it sounds like I hear a slight knock toward the front cylinder. very faint.
What exactly would you all do to make sure this tractor is field ready.
How would you inspect the knock?
Since the plungers were stuck maybe the knock is pump timing?
It is hard to get parts for this tractor so I want to make sure I don't overlook and do something entirely stupid and end up with trash. I do what I have to based on risk reward and worth of the ole tractor but would like to get it to work in the field.