stevasaurus 23,452 #26 Posted August 19 After checking around a little, I found this file which is for 1977 "B" & "C" 8 speed transmissions. Check out the axle bearing part number for these transmissions. Shows axle bearing #105912 with a seal #100443. I have no idea what this #105912 looks like. Could this be what @Bar Nuthin found ?? 1 Share this post Link to post Share on other sites
wallfish 18,625 #27 Posted August 19 11 minutes ago, stevasaurus said: After checking around a little, I found this file which is for 1977 "B" & "C" 8 speed transmissions. Very nice detective work Steve! They refer to everything else as "needle bearing" but not those. Maybe Bar should measure those bushings and compare it to someone measuring the needle bearings for him. I'm going to guess that the needle bearings will still fit into the trans case and WH cheaped out on those lower cost model tractors. Doubtful they would change the dimensions of the trans case just for that bushing. 1 1 Share this post Link to post Share on other sites
stevasaurus 23,452 #28 Posted August 19 Right John. The needle bearing that would be axle bearing in a #5091 would be a B-1816 and wouild measure 1 3/8" OD ---1 1/8" ID---and 1" high. 1 Share this post Link to post Share on other sites
wallfish 18,625 #29 Posted August 19 39 minutes ago, stevasaurus said: Right John. The needle bearing that would be axle bearing in a #5091 would be a B-1816 and wouild measure 1 3/8" OD ---1 1/8" ID---and 1" high. But wouldn't he would need the needle bearings with a 1" ID for that one? 1 Share this post Link to post Share on other sites
Racinbob 12,231 #30 Posted August 19 (edited) The 76 & 77 B's had 1-1/8" axles. Edited August 19 by Racinbob 3 Share this post Link to post Share on other sites
Bar Nuthin 1,477 #31 Posted August 19 (edited) 2 hours ago, stevasaurus said: After checking around a little, I found this file which is for 1977 "B" & "C" 8 speed transmissions. Check out the axle bearing part number for these transmissions. Shows axle bearing #105912 with a seal #100443. I have no idea what this #105912 looks like. Could this be what @Bar Nuthin found ?? I've observed that as well, but this is the only reference I find to part # 105912. Perhaps they abandoned the ideal of a synthetic bushing. His model and serial would indicate a late 1976 build. Edited August 19 by Bar Nuthin Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,719 #32 Posted August 19 The 100443 seal is for a 1-1/8" axle so the the 105912 bearing must be also. 105912 bearing has been replaced by 9416 bearing used 1980-1983 in the 103916 transmission. The 103916 transmission was used 1978-1984 9416 also listed for the 1980 D-160 with a Sundstrand hydro. 1 1 Share this post Link to post Share on other sites
wallfish 18,625 #33 Posted August 19 3 hours ago, Racinbob said: The 76 & 77 B's had 1-1/8" axles. Ah HA. I thought all the Bs had 1" axles. Thanks 3 Share this post Link to post Share on other sites
Racinbob 12,231 #34 Posted August 19 17 minutes ago, wallfish said: Ah HA. I thought all the Bs had 1" axles. Thanks The 74-75 years were 1" as well as being a medium frame (2" shorter wb). In 78 the B's became lawn tractors. 2 1 Share this post Link to post Share on other sites
stevasaurus 23,452 #35 Posted August 19 @Bar Nuthin measure the depth of the hole where the bearing goes. If you use a bearing that is 1" high, you will need at least 1 1/8" for room for the seal to sit flush with the end of the axle housing. Thanks @gwest_ca ! 1 Share this post Link to post Share on other sites
Bar Nuthin 1,477 #36 Posted August 20 (edited) 3 hours ago, stevasaurus said: @Bar Nuthin measure the depth of the hole where the bearing goes. If you use a bearing that is 1" high, you will need at least 1 1/8" for room for the seal to sit flush with the end of the axle housing. Thanks @gwest_ca ! Here are some better photos of the bushings. They appear to have the same dimensions as the 9416 needle bearings. The one on the right is the one that was wallered out and had shifted back into the housing (not in the machined area). The one on the left was seated where you would expect to see the bearing. The machined area measures 1-1/8" deep. There's no lip at the back to stop the bearing, so I'm assuming it's just a matter of pressing the bearing in until you have room to install the seal??? I've seen posts about people putting the bearing in the freezer before installing. Any tips? Ordered parts from Lowell, but it says he's at a show in Illinois, resuming shipping on 8/27 Edited August 20 by Bar Nuthin 1 Share this post Link to post Share on other sites
Bar Nuthin 1,477 #37 Posted October 19 (edited) On 8/19/2025 at 11:27 AM, wallfish said: Maybe Bar should measure those bushings and compare it to someone measuring the needle bearings for him. I'm going to guess that the needle bearings will still fit into the trans case The new needle bearings were an exact fit in place of the synthetic bushings. The tractor is performing flawlessly, with no further axle seal issues. Edited October 19 by Bar Nuthin typo 2 1 Share this post Link to post Share on other sites
wallfish 18,625 #38 Posted October 19 6 hours ago, Bar Nuthin said: The new needle bearings were an exact fit in place of the synthetic bushings. The tractor is performing flawlessly, with no further axle seal issues. Yeah, someone cheaped out and made bushings. You never know what the circumstances were that made them make that decision but at least they didn't modify the case 1 Share this post Link to post Share on other sites
