b 7100 hst issue

[tebeef]

Hi guys I recently bought a 80ish b7100 hst 4x4. I was told it was having trans issues in cold temps. I found it to work fine until it warmed up then it lost motion and made a screaching sound when pedal pushed in either direction, but if lightly pushed it would crawl. I did a full fluid change cleaned both screens and replaced filter. Now it goes awesome up to 3/4 pedal then it has a ratchet feel in pedal and looses speed, Am I too late(lots of metal in oil and screens completely plugged and sucked the filter center in) It almost seemed to improve as i drove around yard. Any thoughts

 

[ShaunBlake]

My thought, coupled with a sinking feeling in my gut: 'Uh oh!'

Soon one of the gurus (many here, several with the same configuration) will chime in with advice and steps to take to figure what's going on.

 

[tebeef]

Just an update. This morning it moves but wants full throtle to give any speed on flat ground. On incline barely moves / will crawl if light pressure on pedal. So not such a good deal after all. Any thoughts

 

[mwjoerin]

I would replace the screens and filters again in hopes that material left over from the first fluid change has plugged them up again.

Sent from my SAMSUNG-SM-G900A using Tapatalk

 

[tebeef]

I did a second change already. The screens had some particles but not much.The oil from first change had a lot of gold colored fine dust that could be seen when pouring it from catch pan (like metalic flake in paint) the bottom of catch pan looked like I was panning for gold and hit it big. Is it possible to have a relief valve sticking,everytime I try it it seems to perform differently.

 

[gatsby174]

The changes in behavior could be related to how warm/cold (thick or thin) the hydro fluid is at the time. Sounds like something let loose...The question is what? Sorry I can't help with that.