Need a part number

Getting it together to replace the trunnion balls and bearings on my d8 14a. It has the angle dozer. As far as I can tell the bearing is part number 6F2904 with the cap number 6F2905. What is the correct replacement ball that fits with this bearing? Looks like it was still used on D6C. Thanks

What's the blade s/n? Looks to be a 3F4714 trunion by blade part number and appears to be replaced by 1J3930

What I have done in the past to fix the trunions is buy the balls and a pair of caps, cut the ball socket off of the casting in the dozer arm and weld the caps on to take their place. Naturally you need to bevel everything good and get a quality weld job. Typically the original caps are not worn much because the pressure is against the other half. Never had a problem doing it this way, it saved buying the expensive casting on the end of the arm which you probably can't get anyway. Just finished tightening up my D4D, in that case the balls were still good ( lucked out), so we milled .225 in. off the caps to take out the slack then added shims to get it perfect, got by real cheap on that one.

1962 D4C

Thanks for the info gents. I searched for the trunnion balls and didn't find anyone who likes shipping to Canada. Cat wants around $550 Cad for each. Plus I need a set of caps. Now I have another plan. I have a set of really good larger trunnion balls that would have been used with the straight arms on a straight or semi U blade. They were on the late model 14a under carriage (over 9000 serial number) that I put on Mr. Cat. I used the original smaller angle dozer trunnions that go with the c-frame. The bigger ones mount a foot further back and around 6 inches higher. They look like the same as an 8H or 7F. Since I already have the balls http://acmoc.org/bb/images/icons/shocked.gif I'm thinking I should use them. The mounting plate is totally different and will require some fitting but nothing I can't handle. Way heavier duty. I like the idea from Dpete to use a cap as the push bearing. I see there is an outfit in Texas that makes a "special" cap that is probably intended for this purpose. Has a raised area on the back already chamfered for welding. Probably reliable steel as well. Not sure about the off shore stuff. Anybody use the aftermarket korean stuff? Any thoughts?