BobbyD218 7 #1 Posted July 26, 2016 (edited) Hello Horse Nuts, Someone nearby is selling a C hydro rear end. My 312a has no issues at the moment, but I'm aware from the posts here that the Eaton 7 in my machine doesn't have the heft of the 11 from the C. Does anyone know if I would be able to swap that C rear end into the 312a without going too nuts? Is it a very involved project? The C rear end also has the port for hydro lift. Thanks, Bob D Edited July 26, 2016 by BobbyD218 Share this post Link to post Share on other sites
953 nut 51,926 #2 Posted July 27, 2016 If you go to the manuals section on here you can download the manuals for both tractors and check for similarities and differences. Either that or load up your 312 and take it over to the seller.s house and take a close look. Share this post Link to post Share on other sites
scotty 252 #3 Posted July 27, 2016 I sold a guy an eaton 1100 to swap out his bad 700 on his 518. He did end up doing it. If you dont use the hydraulic lift i believe you had to loop the hydro hoses. Share this post Link to post Share on other sites
BobbyD218 7 #4 Posted July 27, 2016 Thanks for the replies, gentlemen....I'll see what I can find out. Share this post Link to post Share on other sites
shallowwatersailor 3,213 #5 Posted July 27, 2016 Is it an Eaton or Sundstrand? Share this post Link to post Share on other sites
BobbyD218 7 #6 Posted July 27, 2016 Good question.....The seller didn't say if it is an Eaton or Sundstrand; only that it came off a C tractor. The pump looks very similar to the Eaton that is in my Bolens. Here are the two pics from the ad. What do you think???? Share this post Link to post Share on other sites
oldredrider 2,547 #7 Posted July 27, 2016 Definitely a Sundstrand. 1 Share this post Link to post Share on other sites
BobbyD218 7 #8 Posted July 27, 2016 "The 1980 C-175 used a Sundstrand in the early models (oil filter faces the right side with an S in the model number) and an Eaton 1100 in the late models (filter faces the rear with an E in the model number)" I found this in an earlier post on this subject. From the operator's seat, the oil filter would be facing the right. So if this is true, than I suppose this rear end has a Sundstrand pump. Thanks OldRed... I assume a complete rear end swap isn't in the cards... Share this post Link to post Share on other sites
953 nut 51,926 #9 Posted July 27, 2016 None of the linkage from your Eaton will line up with that Sundstrand unit. Glad you posted the pictures, the seller is misinformed. Share this post Link to post Share on other sites
953 nut 51,926 #10 Posted July 27, 2016 None of the linkage from your Eaton will line up with that Sundstrand unit. Glad you posted the pictures, the seller is misinformed. Share this post Link to post Share on other sites
pfrederi 17,169 #11 Posted July 27, 2016 Sudstrand Piston to piston with brake. Putting on your 312 would require a lot of work/fabrication Share this post Link to post Share on other sites
shallowwatersailor 3,213 #12 Posted July 28, 2016 My advice is to run your 312A until you have issues. Mine has over 1100 hours and is still strong. 2 Share this post Link to post Share on other sites
bmsgaffer 2,043 #13 Posted July 29, 2016 You will be able to swap in an eaton 1100 when its time, but knowing that they are plentiful just run it till she dont move no more! Youve got nothing to loose. 1 Share this post Link to post Share on other sites