520-H tractor with Eaton 1100 Transaxle "bucking"

[qudrcps 6]

I recently started experiencing "bucking" on my 1997 520-H with the Eaton 1100 series transaxle.  This occurred after 500 hours of heavy use with the 60" mowing deck, with all transaxle oil changes performed per specs.  In reviewing causes of "bucking", I came across this for a similar complaint in a Simplicity 4711 that used the same transaxle.  ( simpletractors.com/forums/topic/7441-simplicity-4211-hydro-bucking-problem/ ).  One thought was that this was due to missing or loose bolts securing the transaxle to the frame.

 

This turned out to be precisely the reason for the "bucking" in mine.  One securing bolt replaced, all other securing bolts tightened (along with the engine bolts), and the Forward-Reverse lever/linkage adjusted and tightened, and the tractor is back to "usual".

 

It's just something to consider before the nightmare of a transaxle overhaul...

[19richie66 17,500]

Glad you got it figured out.👍

[953 nut 55,155]

That is some good information,              thanks for sharing.

[WHX?? 48,813]

Always has been a weak point, the f frame to transaxle point, specially when hauling around a heavy 60 incher and even on early tractors with light attachments. Many posts here on how to reinforce it.  Check the frame where the the 3/4 floorboard attaches.Another known weak point when toting a 60 around.