1973Auto 80 #1 Posted February 22, 2011 Posted this in the regular WH area. Found the Trany section. Also looking for an exploded view. Thanks for any help or advise!!!!! Trouble with The 1973 Auto. 12 hp Sunstrand auto trany. Only have forward. No reverse, and when I push in the Brake/Clutch it does nothing. Wheels go forward at full speed. Any thoughts /help before I send it some place, preferably not the swap sheet. I am willing to haul it to one of you guys that like/can work on these types of tranys. I am really not that confident in this area. But if it is not too complicated I will give it a shot. I can travel about 100 miles from zip code 14701 to drop off. Share this post Link to post Share on other sites
B-8074 19 #2 Posted February 22, 2011 I can send you pdf. of the manual if you want. Just pm me your e-mail. Share this post Link to post Share on other sites
MikesRJ 552 #3 Posted February 22, 2011 Your 12hp Auto has transmission 90-2046 (models 1-0460) or 90-1136 (models 1-0465): http://www.mywheelhorse.com/graphics/file/...n_1965-1982.pdf Share this post Link to post Share on other sites
1973Auto 80 #4 Posted February 26, 2011 Thanks Guys!!! The plastice cam is broken in 2.....Do they still make these after market??? Does anyone know where I can get one :thumbs: Share this post Link to post Share on other sites
TT-(Moderator) 1,127 #5 Posted February 26, 2011 P/N 5996 - still available from Toro @ about $9 Buy a spare too...... they won't be around forever. :thumbs: Share this post Link to post Share on other sites
can whlvr 991 #6 Posted February 27, 2011 i agree with tt i bought five last year,might get a few more Share this post Link to post Share on other sites
Tankman 3,515 #7 Posted July 16, 2012 Thanks guys, copied the *.pdf for my Horse's library. I have a minor problem with my parking break, seems the tranny works great. Just no parking break, stuck or something? Lever is stuck. 1973 12 HP, automatic, Model No. 1-0465 B. Share this post Link to post Share on other sites
sorekiwi 761 #8 Posted July 16, 2012 I have a minor problem with my parking break, seems the tranny works great. Just no parking break, stuck or something? Lever is stuck. . Probably someone has put the brake on while the tractor was still rolling and broken off the pawl that engages with the gear inside the transmission. Nothing you can do without splitting the halves. To confirm this, watch the lever on the right hand side (towards the front) as you try to engage the brake. If the pawl is broken, the lever will move, but the brake wont engage. Share this post Link to post Share on other sites
Tankman 3,515 #9 Posted July 16, 2012 sorekiwi, thanks for the reply. Lever doesn't move at all. Stuck full time. Using the Horse isn't a problem but, can roll away a bit without the parkin' break. I'll take a peek-a-boo under the sheetmetal, perhaps something is blocking the lever although perhaps stuck inside the tranny. Share this post Link to post Share on other sites
