OL2STROKER
Well-Known Member
Recently snagged a D31A-17 at a local auction. Sadly I got it home and was only able to push over a few stumps before the transmission lost all movement forward and reverse. Thanks to the guys here I was able to see the problem was most likely the strainer plugged so I dumped the fluid and removed strainer and it was just absolutely full of metal. Lots of metal sludge in the bottom of trans, didn't look like it had even been cleaned out and didnt appear to be fresh. I cleaned it all out and thoroughly cleaned strainer.
Once refilled with the proper oil to the proper level I was only able to operate the dozer again for about 2 minutes and then lost all movement again with the same cavitating pump sound. I dumped the oil again and it was back completely full of metal this time fresh looking along with plugging the strainer again. Oil looked like paint.
I again cleaned the strainer and refilled the oil in an attempt to get the dozer to make it to my trailer so I didn't have to work on it where it was. Of course it died completely in forward speeds with a thunk right here:
So my only option is to remove the transmission where the dozer lays, typical. I still had reverse so I was able to get it back up on some lumber to give me some more room to work. I then began the removal process which is pretty simple for this machine. It's tight in places but we made steady progress.
She's finally free!
At least the bevel gear and trans output look like new. I was really impressed with this for 7600 hours on the machine.... it had to have been done already right?
Once refilled with the proper oil to the proper level I was only able to operate the dozer again for about 2 minutes and then lost all movement again with the same cavitating pump sound. I dumped the oil again and it was back completely full of metal this time fresh looking along with plugging the strainer again. Oil looked like paint.
I again cleaned the strainer and refilled the oil in an attempt to get the dozer to make it to my trailer so I didn't have to work on it where it was. Of course it died completely in forward speeds with a thunk right here:
So my only option is to remove the transmission where the dozer lays, typical. I still had reverse so I was able to get it back up on some lumber to give me some more room to work. I then began the removal process which is pretty simple for this machine. It's tight in places but we made steady progress.
She's finally free!
At least the bevel gear and trans output look like new. I was really impressed with this for 7600 hours on the machine.... it had to have been done already right?
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