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I bought a new Husqvarna GT52xls from the dealer last spring. I just use it for cutting grass, not towing anything heavy, and I'm only 190lbs. Recently I noticed the tranny getting a little slow, then yesterday it got really slow and died. I pushed it back to the garage and looked around underneath. I touched the rear axle and it was really hot. After an hour of letting it cool down it drove fine, but I didnt use it.

I called the dealer but didnt get an answer, might be on vacation this week??

Any idea why its running hot?

I believe your transaxle is Tuff Torque with locking differential, should still be under warranty.

Bump to see if any development on the hot TuffTorque axle??

What temp did it get to?

Was this before you mowed or after you mowed ? they do get pretty hot when worked.

Still under warranty, I would think anyhow.

Check the fluid lever and fan blades?

How tell temperature? Infra red flash gun and add factor to estimate oil temp? They add a pump and cooler to race differentials. Wonder what the oil temp should run ? Thought the "i" added to XLS indicated locker? There is a limited slip on another Husqy model lawn tractor.

What trans do you have?

Have not seen tag or stamp, but data base says K-66 with locking diff and visual shows fan and tank. Use synthetic auto 5W50 per TuffTorque. Dash mounted locker switch.

The expansion tank is optional. I have not found the operating temp either.

I sampled 6 industrial sites which state max oil temp 160F to 200F. None of the TuffTorque specs online show operating temp. I called them but did not leave a message. I will email the question. The sites all say the oil should be maintained below max with a cooler if necessary. The temp should be taken from an active line and not a tank.

Edit: Second try at TuffTorque. They do not come to the phone and the email inquiry page was not functional last nite. I had talked to a person there couple weeks back. Did not leave message.