Our 8800 wheel motor seal went in the new mower after coming back from a pump replacement . .Just one of those things that happens on rare occasions. . The other 8800 and JD fleet are working great . We needed this guy out mowing ASAP but dealer couldn't make it out till the end of the week . Having some time on my hands and a great shop to work out of I offered to do the job for them if they liked .
For me it's giving a hand up to get my machine out as early as possible .
First thing was to engage park break and loosen axle nut . You may need a good 10' extension ( fence post pipe) to get it started .
You will have to jack the axle up pretty high off the floor . The axle housing is also the reservoir for the hydraulic fluid . The idea is to get the oil to the other side to prevent most of it from leaking out . Put a couple of jack stands under the axle and leave jack under .
Remove brake callipers and pads on both side of hub . Ran into a small problem . I didn't receive any 3 jaw pullers yet .
So ....Drilling and tapping for a 3/8 ths 16 thread I'm able to use my bearing puller .
With a little heat and pull it popped off fairly easy .
Remove hub and key
Loosen off the 2 hydraulic lines
Remove the remaining 4 bolts
Pretty much falls out . Lost about 1.5 litres of hydraulic fluid .
Putting the motors side by side to move hydraulic fittings to new one . Top up the new one with hydraulic fluid to keep it lubricated till the air works its way out . Also use a new O ring .
Connect the hydraulic lines first loosely . Then torque wheel motor down to spec .
Reassemble in reverse order and top up hydraulic fluid . Let run up to operating temperature and move steering wheel back and forth to the stops . Check for leaks and done . The wheel motor axle nut is 160 ft lbs.( new lock axle nut ) do not put on with air gun you may damage the wheel motor .