Mongo 2 #1 Posted October 23, 2016 While cutting my lawn my 520h came to an abrupt stop. Couldn't get it re-started. I loosened off the belt from engine to hydrostatic pump, and the engine started right up. No movement in the pump shaft. So, do I have to remove the whole pump and try in getting it repaired or is there something else I can do?? Any help would be great. Thank you, Share this post Link to post Share on other sites
slammer302 2,155 #2 Posted October 23, 2016 If the pump pulley does not move freely. You have a problem. You can take it off and disassemble it and found out why it's not turning or start looking for a replacement pump or whole trans assembly. Share this post Link to post Share on other sites
DougC 2,641 #3 Posted October 23, 2016 Hope it's just the pump Mongo. Share this post Link to post Share on other sites
953 nut 55,895 #4 Posted October 24, 2016 Have you checked to be sure the pulley didn't slide in on the shaft and get wedged against the pump? Share this post Link to post Share on other sites
cleat 6,398 #5 Posted October 24, 2016 Did the idler pulley seize up ? Share this post Link to post Share on other sites
Mongo 2 #6 Posted October 24, 2016 I have removed the "cooling fan blade" and the pulley from the shaft. Before I did that, I was unable to turn the pulley I any direction. After removal of pulley, still unable to turn the shaft. There was some play of the pulley on the shaft, meaning I could slide towards and away from the pump. Seems to be a lot of work to get the pump off. Share this post Link to post Share on other sites
Detector 72 #7 Posted October 25, 2016 Here is a thread with some photos of the pump internals I found using the search that might be of some use. 1 Share this post Link to post Share on other sites
Mongo 2 #8 Posted November 2, 2016 Found and solved my problem. Shaft bearing fell apart, able to replace. Just have to put back together. Thanks everybody!! 2 Share this post Link to post Share on other sites
cleat 6,398 #9 Posted November 3, 2016 Are you talking the bearing on the lift pump ? What bearing number is it ? Did you take pics of your progress ? Cleat 1 Share this post Link to post Share on other sites