Tenn_Blue
Silver Member
- Joined
- Nov 14, 2007
- Messages
- 154
- Location
- N.E Tennessee
- Tractor
- Deere 2320, Bobcat 322 mini-ex, Bobcat 763 skidsteer
I have a Deere M665 Zero turn mower. Unfortunately, with a blown engine. On this model, the hydraulic pumps are driven off a flywheel stub on the horizontal engine driveshaft (25hp kohler command) Each hydraulic pump is belt driven with a single serpintine type belt. Then the mower deck runs off an electric pto belt that runs off the back side of the engine, around a couple idler pulleys, and under the frame to the deck - it's a long belt....
I have a 27 hp VERTICAL shaft engine that runs good that I am considering adapting the mower to. The vertical shaft would be an easier fit to the mower deck IF I can adapt the drive pumps.
I can turn the drive pumps 90 degrees so the shafts turn down instead of back horizontally - making new brackets would be easy. The control lever tightens onto a shaft on the side of the pump, so that should swivel around with no problem either. My question is - will the pump "care" that it is now sitting at a different angle (on it's side...)? Basically would be switching from a horizontal plane to a vertical plane... Doesn't seem like it would make any difference, but figure if anybody knew.....
I know that the proper thing would be to get the "right" motor to go in it, but I already have the vertical shaft. Also, it seems that horizontal shaft motors demand a premium price over the same hp in a vertical shaft. Switching to a vertical orientation (seems most zero turns are vertical shaft now a days anyway) seems to be less loss (shorter belt, no idler pulleys, no plane change).
So how about it, hydraulic experts? Anybody know if this wouyld be a problem with the pumps?
I have a 27 hp VERTICAL shaft engine that runs good that I am considering adapting the mower to. The vertical shaft would be an easier fit to the mower deck IF I can adapt the drive pumps.
I can turn the drive pumps 90 degrees so the shafts turn down instead of back horizontally - making new brackets would be easy. The control lever tightens onto a shaft on the side of the pump, so that should swivel around with no problem either. My question is - will the pump "care" that it is now sitting at a different angle (on it's side...)? Basically would be switching from a horizontal plane to a vertical plane... Doesn't seem like it would make any difference, but figure if anybody knew.....
I know that the proper thing would be to get the "right" motor to go in it, but I already have the vertical shaft. Also, it seems that horizontal shaft motors demand a premium price over the same hp in a vertical shaft. Switching to a vertical orientation (seems most zero turns are vertical shaft now a days anyway) seems to be less loss (shorter belt, no idler pulleys, no plane change).
So how about it, hydraulic experts? Anybody know if this wouyld be a problem with the pumps?