CCW 1,300 #1 Posted May 15, 2020 It is time to consider rebuilding the transmission on my 89 312-8. Any advice or links to existing postings here on RS would be great. - Thanks Share this post Link to post Share on other sites
meadowfield 2,594 #2 Posted May 15, 2020 38 minutes ago, CCW said: It is time to consider rebuilding the transmission on my 89 312-8. Any advice or links to existing postings here on RS would be great. - Thanks what is making you think it needs a rebuild? oil seals and oil change can be done without stripping... Share this post Link to post Share on other sites
wallfish 17,079 #3 Posted May 15, 2020 There's a plethora of trans threads to reference. Use the search feature up there 2 Share this post Link to post Share on other sites
CCW 1,300 #4 Posted May 15, 2020 14 minutes ago, meadowfield said: what is making you think it needs a rebuild? oil seals and oil change can be done without stripping... This is exactly why I asked this question. Tractor runs great, just very dirty and leaking oil from transmission area. Brake is very oily even after I cleaned it up. I think you just made me a very happy person because I did not really want to break down the tranny. See my pics below. Share this post Link to post Share on other sites
meadowfield 2,594 #5 Posted May 15, 2020 Looks like it needs dropping and putting on a bench. Drain the oil, pull the brake pulley and drive pulley. Then clean up with kerosene. seals can be pulled without splitting and it’s safer to fit them with the trans together - the lip can be damaged fitting them before... 1 Share this post Link to post Share on other sites
pfrederi 17,867 #6 Posted May 15, 2020 Jack it up and try wiggling the rear wheels. any up down front rear movement bad axle bearings. That much leakage could be the result of failing axle bearings 2 Share this post Link to post Share on other sites
CCW 1,300 #8 Posted May 15, 2020 Thanks all. I will do as you suggest. Dad was not the best at maintaining the horse over the years. Seepage is not atrocious as it seems. The drip pan has accumulated that layer over the winter and this spring. Transmission is still well supplied with oil. Debating whether to do this during the summer or winter. Most likely summer. Share this post Link to post Share on other sites
wallfish 17,079 #9 Posted May 15, 2020 The brake drum shaft seal is a common problem. Soak the brake band in gasoline for a day or 2 as you do all the seals. Let it dry out and evaporate, clean the drum well and it will stop on a dime when adjusted properly. Share this post Link to post Share on other sites
stevasaurus 22,863 #10 Posted May 16, 2020 Put the horse on a trailer and take it to a do it yourself car wash. Use the high pressure hose with some soap, it will do a good job. Take some quarters and wear a rain coat. Share this post Link to post Share on other sites
CCW 1,300 #11 Posted May 16, 2020 45 minutes ago, stevasaurus said: Put the horse on a trailer and take it to a do it yourself car wash. Use the high pressure hose with some soap, it will do a good job. Take some quarters and wear a rain coat. I like that idea. Then I can see where it is actually leaking from. 1 Share this post Link to post Share on other sites
clueless 3,011 #12 Posted May 16, 2020 (edited) 1 hour ago, CCW said: I like that idea. Then I can see where it is actually leaking from. Just be careful at the car wash, most have signs that say no oil or grease cleaning or something like. If they do and they catch you it can cost you a lot of money and possibly a fine. Edited May 16, 2020 by clueless 1 Share this post Link to post Share on other sites
CCW 1,300 #13 Posted May 16, 2020 41 minutes ago, clueless said: Just be careful at the car wash, most have signs that say no oil or grease cleaning or something like. If they do and they catch you it can coast you a lot of money and possibly a fine. Thanks. Maybe I will just use my pressure washer I have here at home. Share this post Link to post Share on other sites
stevasaurus 22,863 #14 Posted May 16, 2020 See if they have a sign. They don't have a sign around me. If you have one, it will do a nice job, and then you can work on it. Share this post Link to post Share on other sites