Drive train seal leaking.

Pairodox · Jul 27, 2008

Am doing my first restoration on a 42 H. One of this first things I've done is to look for leaks. I had one at the rear 'inspection window' that allows you to see hydraulic drive shaft (bottom) as well as the drive train (top). I wrote the other day and seem to have the seals on either side of the hydraulic shaft figured out. Now, what about the tranny-side of the drive train? That big coupler way up there looks like a knuckle-cruncher. Any suggestions? And, what do I do then if I do manage to remove the coupler? Do I have to split the tractor? If so .. adding oil might be easier.

CNKS · Jul 27, 2008

You do not split the tractor to replace those seals. Everything is done inside the clutch housing. The knuckle cruncher will come loose, at least it did for me.

Wayne in MN · Jul 27, 2008

Both transmission drive shaft & PTO drive seals are located behind the belly pump.
Remove the pump drive shaft & the PTO seal is right there where the pump drive connector was located. Put the transmission in reverse & lock the brakes. Use a bar or pipe wrench to unscrew the drive lug, lefty-loosey.
Remove the 3 cap screws & the housing comes off with seal attached. Replace the seal & gasket, replace the 3 cap screws, screw the drive lug in, righty-tighty, & you are done. Some oil will leak thru the bearing while you are replacing the seal. No need to tighten the drive lug much, it self tightens when the pump is used.
Transmission drive is similar but you must remove the drive shaft coupler to get at the seal. Tip: when the nuts are off the tapered bolt, hold the coupler drive with a pipe wrench & turn the tapered bolt to loosen. Don’t try to drive it out or damage will happen.

Drive train seal leaking.

Pairodox

Member

CNKS

Well-known Member

Wayne in MN

Well-known Member

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