I just bought a HR 15 hydro, it has a stripped spline on one of the cutter deck motors as well as the female side on the pulley. The hydro motor works, can I just buy a new spline and rebuild the motor? Does anyone have a used hydro motor they would like to sell? The motor I have is a Ultra (Jacobsen part #163716). Jacobsen wants too much for new pump so I'd like to go with a used or rebuild mine. The new pulley with female spline is $185 from Jacobsen, anyone have one? Also looking for any manual about this HR 15, Ive been searching but cant find much info on the net. This unit is in good condition, runs great, not much rust and operates fine. The bad parts are not a single gauge works and the one stripped spline. I'm just starting to go through this thing, filters,oil, bearings, belts the usual stuff. If anyone knows much about these units Id love to talk to you and pick your brain.
Any help would be much appreciated
Dave 414 708 8839
Dave,
Jake problems? First the goodish news. The splined drive pulley, 185 bucks is a good price for that pulley. What you need to do now is also take the bearing assembly off the deck, pop off the big snap ring and press out the bearings. Check the (I call it the cup) for wear. The least bit, get a new one. As for the bearings, throw the old ones away and replace. What happened was you had a bit of bearing slop and it took the splines off the drive shaft. There is NO margin on that for slop.
Now for the bad news. You have to buy a new motor. If you can find a hydraulic shop that can repair the motor then you're in a better place than I am. Haldex made the motors to Genie Lift specs and Jacobsen supposedly bought the rights from Genie to use the motor. As it is, the motor is proprietary and you can't as much as get a seal kit for the motors. The drive shaft is nitrided steel and it can't be hardly touched with a grinder much less welded up.
I just had the same thing happen. Bearing slop, took all the splines out of the pulley and off the shaft. I waited 3 weeks for a motor from a warehouse in Italy and it was shipped via Australia. Got the pulley together, dropped in the motor and within 30 seconds the shaft broke off the new motor. Obviously a forging error as the shaft is crystallized. Jacobsen won't give a warranty because they can't send the motor back to anyone. So now I'm waiting for
another motor at 500+ dollars.
But when the mowers work, you can mow 80 acres in an afternoon.
As for the gauges, go thru the entire mower and replace the wiring and run it in split loom. You'll eventually thank me. The senders may be bad also. Anything on the mower that's subject such as bushings, hydraulic cylinders, RUBBER COUPLER BETWEEN CRANKSHAFT AND FRONT HYDRAULIC PUMP, whatever, get now as things are getting to be no longer available and it gets worse every year. I'm soon going to buy a junker to mine parts from.
Your's hydrostatic or a 4 speed?
I can copy a tractor manual, electrical schematic and a tractor & mower deck parts book for you.
Brian in WI 920-five38-3one4nine
