B oil seals and clutch return spring

Moondoggie · Dec 1, 2015

I'm working on a '39 B. I removed the final drives to install new oil seals and adjust the bearings. When I received the oil seals for the upper inner shaft, they appeared to be too tight. The shaft diameter is 1.250"; the bore of the seal is 1.187". Although the seals were specified as being for this application, shouldn't the bore be just a tad larger? If I put these seals on, I believe they will wear out fairly soon. Any advice on this would be helpful.
I am also trying to determine where the rear end of the clutch rod return spring is supposed to be attached. The one on it now is attached to a piece of wire wrapped around the Clutch pedal stop. There is a hole in the clutch pedal, below the pivot pin. Is that the mounting hole for the spring?
One last question. When I removed the bearing carrier from the transmission housing, there were 3 metal shims, but no gasket. Is there supposed to be a gasket, or paper shim, between the bearing carrier the housing? Neither the IT manual nor the parts manual show a gasket. I would think it would leak without one.
Thanks for your help!

4wdtom · Dec 1, 2015

Oil seal, That is 1/16" difference between the oilseal and axle size. I don't think that sounds too tight. Slide the axle in with grease on it.

Clutch spring. I think the spring does go from the rod to the pedal below where the rod connects.

Bearing carrier. If you put gaskets in it will change the adjustment on the tapered roller bearings. If it wasn't leaking just put it back dry. If it leaked put a VERY thin coat of some gasket sealer on the shims. Get a reprint of an AC B,C repair manual it will tell you more about the tractor than the ITT.

Moondoggie · Dec 1, 2015

Thanks for the comments and advice. There is no mention of a gasket for the bearing retainer in the B service manual either, so I'll follow you advice and install only the metal shims, once I have thoroughly cleaned them. I don't know if it leaked before, because the entire rear end was covered in old grease and dirt.

4wdtom · Dec 2, 2015

If it was old dry grease and dirt it wasn't leaking much if at all. If it was wet or shinny with oil and dirt it was leaking. But could the leak have been the seal you are replacing?

Moondoggie · Dec 3, 2015

The upper outer and lower seals on the final drive appeared to be leaking badly (original leather seals) but the pinion shaft from the transmission to the Brake drum was also coated with oil and junk, as were the brake shoes. That would implicate the upper inner seal itself rather than the gasket at the bearing retainer, I think.

B oil seals and clutch return spring

Moondoggie

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4wdtom

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Moondoggie

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4wdtom

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Moondoggie

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