1937 A Flywheel play

Try cleaning the crankshaft flywheel area then see if the oil leak is between the flywheel spacer & crankshaft or between the outside of the oil slinger & it’s housing cover..

If the oil leak is between the flywheel spacer & crankshaft then pull the flywheel off [mark it to the crankshaft first but there should be a locator pin in the crankshaft so it only goes on one way] Then remove that pin & ALL the burrs from the crankshaft splines,, then mark the position of the flywheel spacer slot to the crankshaft position,, then pull the flywheel spacer cover off & pull the spacer off,, then dig the old CORK “O” ring from inside the spacer groove,, then install a new cork seal in the spacer groove & use a large diameter socket to roll & push that seal into the groove all the way.. Now lightly lubricate the crankshaft spline area & slide the spacer back on [do not rotate the spacer while pushing straight on.. Make sure the spacer slot is in the same position as before as there is a drive pin on the back of the flywheel that must match that slot.. The re-install the outer D shaped cover using a new gasket with a little gasket sealer on it.. Before tightening the cover bolts place about 3-4 strips of .003” feeler gage [or thin cardboard] between the spacer’s snout & the cover’s center hole to center the cover over the spacer [properly centering that spacer cover is important to do]..

When re-assembling be sure to re-install the flywheel locator pin, then snap the clutch in & block the R/H side of the crankshaft all the way over to the L/H side [flywheel side], then push the flywheel all the way on.. Then un-block the clutch side of the flywheel, then give crankshaft an easy swat right in the center of the flywheel to drive it back through the flywheel just slightly.. When set correctly you should have about .005”-.010” of crankshaft end play [or without a dial indicator that would be a very very light thunk,, not a clunk as a clunk means too much end play]… Then re-tighten the flywheel pinch bolts & re-check those bolts after a few hours of running.

If the oil is coming out from between the outside of the spacer & the spacer cover check ALL the things mentioned above..

Any questions on the above just post back..

JDClooney@aol.com

Depending on what tractor, many have a cork (I think some later ones used a neoprene type seal????) seal located inside that D shaped housing behind the flywheel on the tractors side where the crank comes through. We remove the flywheel,,,,,the D shaped housing,,,,, ,,soak the new seal in warm oil to soften it up,,,,, ,,,clean/polish the crank in the sealing area nice n smooth,,,,, ,,,install the new cork seal and oil slinger,,,,, ,,reinstall the flywheel on the same correct spline it came off of THATS IMPORTANT, GET IT BACK ON CORRECT SPLINE,,,,, ,,,be sure n get the flywheels lil inner tip into the open notch in the oil slinger (its in the D housing),,,,, ,,,,run the flywheel in to within 0.010 end play,,,,, ,,,torque the flywheel back down and repeAt after some running.

Flywheels aint my cup of tea or what I like working on lol, but this may get you going until others offer more detailed tips n opinions of what your problem might be.

Let us know, Good luck n God Bless

John T