The seal for the steering box is part # 48137-44000. Measurements are 32 x 45 x 8 mm. Found the measurements doing a cross reference, but they have been hand written in the 1978 Service Manual by Pancho, who originally scanned it.
Yesterday I did some measurements of lateral movement of the "sector shaft" with a micrometer dial mounted on the magnetic base, and prying the shaft with a crowbar. Only about 0.003" inches, which is nothing and way beyond what the manual calls for replacing the bushings that are in that part, when the wear has surpassed 0.011".
So I ordered a seal and call it good. I don't want to open a can of worms.
http://www.ebay.com/itm/Metric-Oil-Shaf ... 1531390454
The one I ordered is 7mm in thickness, since that's what I found on eBay yesterday. By checking at the store site of the seller, I found the 8mm ones. However, I will stick with the 7mm since the shaft could have developed a groove.
http://www.oringsandmore.com/oil-shaft- ... -for-1-pc/
This site has an amazing variety of seals and O-rings. If someone could take measurements at the speedometer shaft seal will be wonderful. All Patrols tend to leak at this seal.