D8t transmission filter screen

[Franklin7]

Found this part in the screen filter for the transmission on a d8t. Wondering what it could be or came from. Sometimes when tracking when cold the tracks will lock up. Any thoughts?

 

[ahart]

First off, what is the serial number of the machine? Secondly, which screen did you find that inside? The magnetic screen at the pump or the sump screen at the back of the transmission?

 

[Franklin7]

Kpzoo775 is the serial.
Sump screen right before the pump

 

[Franklin7]

Kpzoo775 is the serial.
Sump screen right before the pump

Sorry not the sump one. It's the one right under the floor board next to the pump. The suction screen

 

[Nige]

Kpzoo775 is the serial.
Sump screen right before the pump

Do you mean this one (#1) in the area listed as "K" on the LH illustration.?

 

[Franklin7]

This one here the power train screen.

 

[Franklin7]

First thing in the morning the tracks won't engage then will after a couple trys. After that it is fine the rest of the day. Any ideas?

 

[Nige]

Do you mean it doesn't want to engage gear or that it engages gear but it appears as though the brakes don't want to release.?

Any recent repair work on the power train (converter, transmission, final drives, brakes)..?

 

[Franklin7]

Its always when you go to first fire it up and use it. You put it into first gear and it won't engage or move or it will sometimes move a few feet and then lock up and stop. Seems to just do it in first gear. If you put it into second gear seems to move fine. After you fire it up and are using it then it is fine the rest of the day. Even after it sits after being used and warmed up it doesn't do it.

 

[Franklin7]

No recent work has been performed just regular service. The perform service on the transmission filters has come up and I have changed those out a couple times within last 1500 hrs. Machine has 13000 hrs on it.

 

[Nige]

What brand & grade of oil is in the transmission.?

At 13k hours it is probably getting a bit tired in 1st speed if it moves OK in 2nd. I take it that it does the same both forward & reverse when it's cold.?

 

[Franklin7]

Cat to-4 sae 30

 

[Nige]

Cat to-4 sae 30

Well that answers that question. No issues there.

It might be about time to put pressure gauges on the transmission when it's cold and see if there is any difference between how the 1st and 2nd speed clutches react when engaged.

Was there anything else in the suction screen apart from the spool in your photo?
Still baffled as to what it is though.......

 

[Franklin7]

Yes both forward or reverse. That part I found in the suction screen has me stumped on what happened and where it came from

 

[Franklin7]

I'll have to check the pressures and see where they're at

 

[Franklin7]

Maybe just a few tiny pieces of rubber from maybe a hose or something was in there other than that pretty clean.

 

[Nige]

I'll be honest it doesn't look like anything I've ever seen in a transmission, converter, or anything else related to the rear-end.

 

[ahart]

I searched throughout the parts and service manual yesterday and couldn’t find anything that looked like it.

 

[Nige]

Same here. Nothing.

 

[Franklin7]

Well thanks for your help guys hopefully figure something out.