H driveshaft seals

wfd2 · Apr 11, 2012

My '47 H is leaking gear oil pretty bad. It's coming out of the area around the clutch inspection cover. Looks like the driveshaft seals for the driveshaft and hydraulic pump (?) is leaking.

It looks like I can remove the ujoint bolts, slide out the drive shafts and put the seals in that way. Does anyone know if that can be done or does the tractor have to be split?

Thanks in advance,
wfd2

Bob M · Apr 11, 2012

Replacing the seals is relatively straightfoward and can be done without splitting the tractor.

Most difficult task is dropping the belly pump - it's heavy and awkward to handle if working alone. Once the pump's out, removing the couplings and seal retainers is a simple matter.

New seals are cheap and readily available from any bearing supplier (no need to purchase seals from the CIH dealer). New seals will be about 1/2 the thickness of the originals. But they fit and work fine.

rustyfarmall · Apr 11, 2012

I've got the new seals on-line if you can't find them locally.

wfd2 · Apr 11, 2012

Thanks! I already purchased them from IH late last summer but have been putting it off over the winter. Now it's time to do the work as I'll need the tractor soon!

Bob M · Apr 11, 2012

If the transmission is nearly full of gear oil, drain 2 or 3 gallons out before you begin. Otherwise that much oil will come out - and come out FAST - when you remove the lower (hyd pump drive) seal retainer!

H driveshaft seals

wfd2

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Bob M

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rustyfarmall

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wfd2

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Bob M

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