Bleeding oil on MF135

Kalamazoo · Mar 20, 2017

Just got done with a in tractor rebuild, and I'm getting ready to break it in.

Any way to bleed the oil before starting?

I was thinking of keeping the valve cover off and spark plugs out while turning the motor, will this work? I would like to see oil flow to the top end.

Phil Tibbetts · Mar 20, 2017

I always oil and grease everything up good while assembling, including pistons, rod and main bearings, rocker arm shafts Etc, Crank motor over for 10 or 15 seconds before starting. Never had any problems with this method. IMO

DavidP, South Wales · Mar 20, 2017

Hi,
On a 'dry' engine it might need a little more than 10 to 15 seconds. Several bursts should be enough to send the
oil to the top. Give it enough time to fill the rocker tube and work its way through. Always very reassuring when
you put the cover back on that oil is definately getting there. You may have had something similar in the States
to the 'Sellarc' grease guns that were sold in the UK in the early 60s. It consisted of a metal cylinder that
would hold about 1 to 1.5 gals of grease. There was a fitting on the top to air pressurize the space on top of
the grease to help force it through the gun and then refill when the pressure had dropped after use. I changed
the gun fitting to fit Perkins oil pressure outlet and replaced the grease with oil. Using it to fill the oil
galleries on a 'dry engine made life a lot easier. Lost count of the number of engines it was used on. Not a lot
of work to make but great results.

DavidP, South Wales

rockepg · Mar 20, 2017

X2 on the lube. I use a mix of permatex assembly lube and moly grease. Slather it in there on everything that moves and you should be ok. Helps, a little, to poor a quart of oil over the rockers when you go to fill it up. Won't supply much but it does help until pump takes over.
Lost of track of how many auto and truck engines i built that way.

Kalamazoo · Mar 20, 2017

Should I then see oil pump to the top end by turning the engine with the starter and valve cover off? I tried this and got nothing.

ptfarmer · Mar 20, 2017

I always pack the oil pump with white lithium grease, it helps seal the oil pump so it can draw oil when its dry. If its a Perkins engine with a spin-on oil filter you can also fill the oil filter with oil so the oil pump doesn't have to fill the oil filter.

I made a oil primer system similar to this, but with sight glass so I don't push any air in after the oil (not my video, but it will give you an idea).
https://www.youtube.com/watch?v=thfTnYdeNz8

Bleeding oil on MF135

Kalamazoo

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Phil Tibbetts

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DavidP, South Wales

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rockepg

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Kalamazoo

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ptfarmer

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