1940willys 121 #1 Posted May 5, 2023 Sorry but I'm not sure what to put in the Uni Drive 4 speed manual transmission. B 80 Model 101409 Serial 59721 Thanx in advance Share this post Link to post Share on other sites
rjg854 11,472 #2 Posted May 5, 2023 85 weight gear lube Share this post Link to post Share on other sites
oliver2-44 9,848 #3 Posted May 6, 2023 80 or 90 wt gear lube. Even some 80w140 would be fine. I use store brand nothing exotic required. Share this post Link to post Share on other sites
1940willys 121 #4 Posted May 6, 2023 Ok thanx for the speedy replys. Next Question is where is the easiest place to add lube to the Trans? I can't seem to find a Fill Tube / Dip Stick on this model like the one on my C101? Share this post Link to post Share on other sites
rmaynard 15,583 #5 Posted May 6, 2023 I remove the shifter and pour in there. Share this post Link to post Share on other sites
1940willys 121 #6 Posted May 6, 2023 Once again thanx for you speedy replies! Are all seals and bearings available for this Transmission. B 80 Model101409 Serial 59721 ? Share this post Link to post Share on other sites
rjg854 11,472 #7 Posted May 6, 2023 yes, check with our vendor Wheel Horse Parts and More 1 Share this post Link to post Share on other sites
stevasaurus 22,842 #8 Posted May 6, 2023 (edited) I find it easier to remove the seat and fenders and use the 2 bolt holes on the top of the trans...one for a funnel, the 2nd for air release. Fill until it starts to flow out of the fill plug on the left side...1 1/2 to 2 qts. Edited May 6, 2023 by stevasaurus 1 Share this post Link to post Share on other sites
1940willys 121 #9 Posted May 9, 2023 How do I know what Transmission this is? I know it's a B 80 and a 4 speed it has 1" axles and the Serial 59721 and Model 101409. So if I want bearings and seals and go over to say Wheel Horse Parts and More I see Numbers. Where is a exploded diagram showing me my trans? Thanx. Share this post Link to post Share on other sites
rmaynard 15,583 #10 Posted May 9, 2023 Go to the manuals section and download the following: Share this post Link to post Share on other sites
