<font color="blue"> Just curious why you had to replace a wheel motor. Where did you buy it, what were the symptoms, how was it to replace? I think you have the model prior to the higher torque motors, is that right? </font>
Hi Duane,
The right rear motor's shaft seal starting leaking when the temperature dropped well below freezing over the winter. The machine wasn't in use at all. One day I noticed oil on the floor and starting watching it. Unfortunately, it just got worse.
Last winter, the left rear had done the same thing, but it stopped leaking as soon as it warmed up, so I wasn't real concerned about the right side. However, when it warmed up it became clear that it wasn't going to stop.
At certain times of the year, we can't afford to be down, so I decided to purchase a new motor, along with a seal kit for the one that is leaking. As soon as I get the seal kit installed on the old motor, we will have a spare.
Our PT-425 does have the high torque motors. I bought the replacement from the local White Hydraulics distributor. White's web site lists the distributors. Nationally,
Precision Fluid Power sells them over the web, although you need to ask for a quote. They run about $320 plus shipping.
To replace the motor, you need a very stout commercial quality puller to get the hub off. I used a 3/4" drive 38 MM socket and a 42" bar to loosen the hub nut. I don't have a big enough torque wrench, so I had to estimate the 300-400 ft lb tightening torque. Since it took everything I had to break it loose, I just gave it everything I had putting it back on. /forums/images/graemlins/crazy.gif
Just to be sure, I am hunting for a 3/4" drive, 600 ft lb torque wrench at a reasonable price. Meanwhile, I am watching it like a hawk.
BTW, the time honored method of striking the end of the shaft to loosen the hub is a no-no. Somewhere there is a forum post which suggests the opposite. White says it should never be done on these motors.
