Farmall M h.p.

taba · Dec 28, 2008

Can anyone tell me the H.P. on a farmall m. Mine seems to have alot of power. Also, when changing the fan belt there is no way I see for adjustment. Goes around the fan pulley and to the crankshaft. Am I missing something??

Anonymous-0 · Dec 28, 2008

The top pully is a 2 part pully. the frt. half screws in to tighten making the belt ride higher in the groove. be sure to loosen the set screw on the pully half , you don't want to strip it out.

Rich Griffin · Dec 28, 2008

The first Ms I believe were rated @ 38hp.

The frt half of the top fan pulley unscrews{regular thread direction}. Sprey with pent.oil,remove small set screw,unscrew,remove belt.{May have to tap lug on pulley 1/2 to get it started to turn}

taba · Dec 28, 2008

Thanks alot

john d · Dec 28, 2008

The M was about 38 hp when it left the factory. Most of them have been overhauled multiple times by now, and very few escaped the thin-wall sleeves with oversize pistons when rebuilt. Depending on the sleeve-piston combination and any other tricks applied to it, the hp can even reach into the 50-52 hp range.

Ditto what others have said about the fan belt. Take a small wire brush and CLEAN the threads on the front of the pulley hub. Penetrating oil, even a spray can of carb cleaner will help. When the nut and setscrew have been removed, turn the hole to the top side and fill it with penetraing oil. Let it set for an hour or so, then TAP the pulley boss with a long punch and hammer. Once it moves, tap it in the other direction, and apply more oil. Eventually it will spin freely with your hand, but not until the years of accumulated dust are out of the threads. Resist the urge to clobber it out of frustration, as you'll crack it.
When you replace the belt, it does not have to be very tight to work effectively.

Farmall M h.p.

taba

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Anonymous-0

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Rich Griffin

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taba

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john d

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