mrc 840 #1 Posted October 17 hi all, i have an oddball type leak on an 8 speed tranny. i placed the tractor on jackstands. i removed the wheels and power washed the tranny. you could almost eat off the tranny at that point. i started the tractor and with the hubs spinning i thought the brake shaft seal was leaking so i changed that seal. nope. the leak is coming thru a 'plug' just to the left of the brake shaft. the 'plug' seems to be like a freeze plug in the case of the tranny. this 'plug' is just under the tab where the brake band bolts onto the tranny. i have never seen this before and do not know how to proceed. any help is appreciated thank you mike Share this post Link to post Share on other sites
ri702bill 8,479 #2 Posted October 17 Mike - that is a thin steel closing plug - they do rot out - either from the inside, or the outside. Perhaps @stevasaurus can shed some light on removal & replacement... Share this post Link to post Share on other sites
stevasaurus 22,841 #3 Posted October 17 OK...you say it is an 8 speed, that tells me the brake shaft is on the cluster gear shaft. What you call a plug is actually a capped bearing on the end of your mushroom gear. Sorry, but if that is what is leaking, you will have to open the trans and change out the capped bearing. I show the bearing to be 1" x 1 1/4" x 3/4" which is Wheel Horse #1532 that crosses to Torington #M-16121. It is #00090903 in Motion Industries catalog. Our vendors, Auto Zone, or any auto place should be able to order it. When and if you go to replace it, you will have to drop and open the trans. The bearing is probably bad or suspect at this point. You need to tap it out from the inside and then tap the new bearing in to flush with the outside. What horse are we talking about?? When you say left of the drain plug...is it the hole closest to the axle housing or the hole toward the front of the trans?? If it is the hole toward the front...cluster gear...the closed bearing is WH #1529 which equates to Torington #M12121. Share this post Link to post Share on other sites
mrc 840 #4 Posted October 17 (edited) here are a couple pics. i'm looking at it and i think it is on the shaft that has the drive belt pulley on the other side of the tranny Edited October 17 by mrc Share this post Link to post Share on other sites
stevasaurus 22,841 #6 Posted October 17 That is your input bearing shaft...you still have to open the trans to replace it. That is a 5/8 x 13/16 x 3/4 WH#1531 Torington #M-10121. Thank you fior the picture...the information in this post is correct. 1 Share this post Link to post Share on other sites
stevasaurus 22,841 #8 Posted October 17 Your trans is probably a #5091...I have videos of opening that one up. Not a big deal, if the hubs and pullies come off easily. Share this post Link to post Share on other sites
mrc 840 #9 Posted October 17 steve, i know you are the manual tranny guru of RS. i just do not understand how changing the bearing will stop the leak. there must be a seal outboard of the bearing??? once i split the cases what else am i in for? Share this post Link to post Share on other sites
Lagersolut 669 #10 Posted October 18 (edited) 3 hours ago, mrc said: steve, i know you are the manual tranny guru of RS. i just do not understand how changing the bearing will stop the leak. there must be a seal outboard of the bearing??? once i split the cases what else am i in for? It’s a closed cup needle bearing - from what I see it shows rust - the cup probably rusted through - you have a pin hole on the facing of the bearing cup . Edited October 18 by Lagersolut 3 Share this post Link to post Share on other sites
stevasaurus 22,841 #11 Posted October 18 Motion Industries has the bearing, Like was said above, it is closed (capped) on one end. For now a finger of bondo would stop the leak or maybe even silacone might work. There is no real presure behind there. If the bearing sounds good you may be alright. https://www.motion.com/products/sku/00090868;origin=sayt 3 Share this post Link to post Share on other sites
