Jump to content

Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors

Sign in to follow this  
Guest

AC314 and simplicity hydro. transmission question

Recommended Posts

Guest
I have a 314 with hydro trans.Im told simplicity also used the same trans.Hera are my questions: 1.What model simplicity used this trans & who made it? 2.314 uses a electric lift but simplicity & other hydro trans mowers have a output for a valve/lift cylinder Does anyone know where this output is? Or where it is on a simplicity that has this same trans?

Share this post


Link to post
Share on other sites
Al
Hi, These tractors used the Vickers hydrostat. These were used in the Simplicity side until the 7000 series and the Allis 700 series. At this time they were replaced by the Sunstrand hydro. The tractors with the Sunstrand had the hydraulic lift added in the early 80,s about the second year of the 7100 family. When this change was made, I believe a different charge pump was spec'd on the tranny, one with about a 25% thicker gerotor to provide a larger volume of oil for the added activity. Anyway I don't think the Vickers is usable for hydraulic lift, I don't think the charge pump has the extra capacity, or the porting. Keep in mind that when power steering is incorporated in the system, you can only turn the wheel so fast as the charge pump capacity limits how fast the P.Steering can respond. Also in the early 90s, there was a problem with noise in the hydro pump. The fix was a new filter to replace the little 2+ inch high one on the side of the transmisssion. A new filter with higher capacity and about an inch taller corrected the noise problem, I don't remember if this was in synch with the higher volume charge pump or not. I believe this was about the time that Sunstrand merged with hydro-gear. May be wrong on that, but this is free and if I am wrong, I will return your money. Remember: "There ain't no free lunch." So that tells you how valuable this is. Good luck, Al Eden

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  

×