97SHOgt 2 #1 Posted April 21, 2015 Proud owner of a 1986 310-8 but about to be given I believe a 1986 312-A that my grandfather owned since it was new. He passed away ten years ago and my grandmother has been using it up until now. Once warmed up it barely moves at a crawl. She ended up getting something new and told me I could have it. I'm going to start with trying to change out the fluids and making sure the correct stuff is used. Then I'm guessing I'm looking at the pump. Can somebody verify what model transmissions/transaxles with the 1100 can bolt onto this model? Years? I thought I saw the 520-H from my initial research but wasn't sure if there was something else. I figured I'd start keeping an eye out. I'm picking the tractor up this weekend. Any feedback is appreciated. Share this post Link to post Share on other sites
daveoman1966 3,762 #2 Posted April 21, 2015 Toro site says the 312-A has the Ekaton 700 series unit...here is a snipe Share this post Link to post Share on other sites
shallowwatersailor 3,213 #3 Posted April 21, 2015 There are two fluids for the rear end. The transmission uses 20W non detergent oil, and the transaxle uses 10W-30 motor oil. When you pull the right wheel off, there is an allen head on the bottom of the transmission portion that you can use to drain it. It is opposite the bleed screw on top. http://www.eaton.com/ecm/groups/public/@pub/@eaton/@hyd/documents/content/pll_1616.pdf Share this post Link to post Share on other sites
bmsgaffer 2,045 #4 Posted April 21, 2015 As for the swap: You can swap an Eaton 1100 onto that model from any model that had an eaton 1100 (gotta love how universal wheel horse generations were). You will have to provide provisions for a lift circuit or bypass it, but the charge pump must be in the circuit (i.e. you will have to make a new hose to bypass the lift or install the whole hydraulic lift from the donor unit). After you get done swapping all of that its generally easier to just use the frame and everything from whatever tractor the 1100 came from. Im going to PM you... Share this post Link to post Share on other sites
KC9KAS 4,741 #5 Posted April 21, 2015 I sent you a personal message. Share this post Link to post Share on other sites
Aussie 98 #6 Posted April 22, 2015 as shallowwatersailor pointed out, the Eaton 700 has a separate fluid supply to the rear axle, unlike the 1100 which utilises the rear axle fluid. There is no provision for draining the 700 fluid on the machine, other than removing the plastic reservoir, which will only get a portion of the oil out. If you wanted to change the transmission fluid you would have to remove the 700 from the tractor and turn it upside down and rotate to get the fluid out. Share this post Link to post Share on other sites
shallowwatersailor 3,213 #7 Posted April 22, 2015 (edited) I was mistaken about the location of the drain. A dealer told me there was and I misunderstood about the location. It is actually the hex head screw on top. Here is a procedure to replace the fluid on an Eaton 700 with a Peerless 1320 tranaxle. The procedure is to remove the screw and pour fresh oil into the reservoir and force the old fluid out the bleed. Bring the fresh fluid to the correct level in the reservoir, raise the rear end (safely) and rotate the rear by disabling the engine for starting. Then crank the engine to remove any trapped air. If it makes any noise there is still air in the system. After looking at the Toro parts site, it appears that the bleed screw hole is used for the reservoir on a 312-A, so Aussie would be correct. Other than the linkage, it is self-contained and should be easy to remove to drain upside down. https://lookup3.toro.com/partdex/index.cfm?xCaller=Toro Enter "312-A". Edited April 22, 2015 by shallowwatersailor Share this post Link to post Share on other sites
97SHOgt 2 #8 Posted April 22, 2015 This is all great information. I'm looking forward to getting into it this weekend. I'm sure I'll be back with more questions. Share this post Link to post Share on other sites
