Having trouble finding the gaskets for these areas.

1- Rubber gasket between clutch cover and transmission cover.

2- felt seal over gear box.

3- felt seal over bevel gears.

The parts book doesn’t show detail very well. Anyone have any ideas for gaskets or something to seal compartments?

I only have a 6U1-up parts book but the part numbers from it are the same as the 7U.
1- Rubber gasket between clutch cover and transmission cover.
Can't find a gasket on either the transmission housing nor the clutch housing
2- felt seal over gear box.
3B889 2of
3- felt seal over bevel gears.
3B880
3B881
3B882
2 of each

Hi Zzzopp,
I have marked in red the gasket that you will require to put it back together in the images,

 
 
 

regards

you could probably use neutral cure rtv slicone for those areas although there has to be a reason why they used felt. these old things dont have gear box breathers do they? so the felt may be to allow for thermal expansion and release of that vapour pressure.

you can buy felt buy the roll from craft supply joints like spotlight.

smear it with grease both sides to help it seal.

another place to try is engineering and bearing suppliers.

Try some Graphite valve packing rope about 1/2" That's what we used to seal our D4 bevel gear cover with some silicone.

www.mcmaster.com/9518K87

 

the case is vented. i think the seal for the transmission cover comes in a roll. pretty sure about any gasket supply can get it for you. measure the width and depth of the groove in the cover and just buy a roll. you can also call cat to get the specs. another more modern alternative would be to buy the roll of oring material that would fit the groove

www.acmoc.org/bb/discussion-d72/26814-tr...et-d4-7u36219#219511

www.midwestsealingproducts.com/materials/felt/

www.mcmaster.com/9700K15/

As I recall years ago I got square cork from Cat. I cannot remember if it was 1/4" or 3/8" but definitely square cork, whatever fits in the channels. Are they not available from Cat any more? I am sure square cork can be sourced.

The updated seals are: Seal Group 6K0856  Effective with Ser.No, 7U33913 For Bevel Gear Shaft and Cover.
2-4K7470 Seal
2-4K7472 Seal
2-6K0949 Seal
2-6K0950 Seal
2-4K4390 Seal
8-6K0840 Pin
4-4B4280 Washer
2-5B2383 Nut
1-36247 Form Instruction

Hi Zzzopp,
I just checked with Cat and all the gaskets/seals are available from them.

If the part number is 3b882 it converts to 3b0882 as some parts guys dont know how to update them.

Regards