May be time for a new rear axle. I've been told these things are disposable, but are rebuildable if you are inclined to do so. I don't know how to do it, but the procedure is available online if you do some searching. The axle is a Tuff Torq K46.
Maybe someone on here with the knowledge you nee will see this and post. Good luck.
#3
pugaltitude
Make sure belts are in good condition and the pulley is turning.
Only other thing you could try is an oil change if its got a filler cap.
Use fully synthetic 5w50 oil.
Apart from that its a new gearbox required as the seals on the pumps will be leaking internal and usually uneconomical to repair.
I never thought about the belt slipping, could be the whole problem. I think they do have a fill plug, but I'm sure they don't have a drain plug. The only way to change the fluid is to remove the axle and turn it upside down.
