Caterpillar 931 Steering Clutches

I show production year as 1974.
If you have a part number for the discs I may be able to dig up the dimensions.
Usually the bronze faced discs are preferred to minimize sticking.
Might not be bad to use the late friction discs if they are made of some wonder material that doesn't tend to stick.

Hi Team,
I seem to recall that the early 931's were dry steer clutch and brakes and a Field Conversion could be done to part fill the steer compartments with oil --likely announced in a Service Magazine, later than I have.
The lined discs were also fully made from the disc material--ie--no steel in the centre like the ones pictured.
I think the ones pictured are for wet rear ends. I stand to be corrected.
Cheers,
Eddie B.

I believe the p/n is 8E4075 (earlier p/n's:6Y4912 or 6S3183). The discs pictured are from General Gear and Machine in Boise, ID. (steeringclutch.com) They are supposed to be a direct replacement for the fiber discs and the steel core is to prevent broken off teeth. Thanks for your Help!
Patrick McDonough

All three part numbers are Fully Organic 303.5mm x 213mm x 4.9mm (71 outside tooth)

Looking at the D3 parts manual these discs would be used with 2H6936 steel plates 289mm x 194mm x 2.3mm (8 inside lugs).

These are all dry clutch numbers.
Wet clutch is a completely different set of numbers.

Hi OM,
thanks for helping out to keep us on track yet again.
I do not have literature for anything this late and have to go from memory.
My favourite machines are from day 1 until about mid 1960's.
Cheers,
Eddie B.

Thanks to all for the help. Greatly appreciated.
Patrick McDonough