piper184
Platinum Member
Does the transmission and hydraulics share the same fluid?
NO=engine oil can't get to the manual transmission unless someone did something wrong.
YES=same thing. A leaking hydraulic pump will leak fluid into the engine not the other way around unless someone did something wrong.
First thing I would do is get eyeballs on the inside of the bell housing. My bet it is dry. If not, you have a rear main seal or oil galley plug leaking.
Second, get the transmission fluid level down to the proper dipstick reading.
Change engine oil and filter. Put some kind of dye in the engine oil. Fluorescent dye will work with new or dirty oil but you need a black light to "see" it. Red or Blue dye can be had from CAT dealers. It will work best with clean engine oil. Run the engine for 30 minutes without driving the tractor, a high idle should work. Shut off and wait 5 minutes, check engine oil level. If oil level is fine run for another 30 and check again.
When you see engine oil drop significantly check the transmission fluid level. If it has risen, check that fluid for traces of your dye.
IF (BIG IF) you find engine oil in the transmission and the clutch housing is dry you will have to start tracing every hose and path you can find to figure out how that is happening.
What you have described so far indicates a closed path for engine oil to get to the transmission. As far as I know there is no such thing in a normal tractor setup with a dry clutch and manual transmission.
I would even go so far as to completely drain the transmission and run the engine experiment again with the drain to the trans open, just to see if you get engine oil running out. At that point maybe remove the top cover of the trans and watch for incoming oil.
This just really doesn't add up unless someone did something wrong.
Let us know what you find.
NO=engine oil can't get to the manual transmission unless someone did something wrong.
YES=same thing. A leaking hydraulic pump will leak fluid into the engine not the other way around unless someone did something wrong.
First thing I would do is get eyeballs on the inside of the bell housing. My bet it is dry. If not, you have a rear main seal or oil galley plug leaking.
Second, get the transmission fluid level down to the proper dipstick reading.
Change engine oil and filter. Put some kind of dye in the engine oil. Fluorescent dye will work with new or dirty oil but you need a black light to "see" it. Red or Blue dye can be had from CAT dealers. It will work best with clean engine oil. Run the engine for 30 minutes without driving the tractor, a high idle should work. Shut off and wait 5 minutes, check engine oil level. If oil level is fine run for another 30 and check again.
When you see engine oil drop significantly check the transmission fluid level. If it has risen, check that fluid for traces of your dye.
IF (BIG IF) you find engine oil in the transmission and the clutch housing is dry you will have to start tracing every hose and path you can find to figure out how that is happening.
What you have described so far indicates a closed path for engine oil to get to the transmission. As far as I know there is no such thing in a normal tractor setup with a dry clutch and manual transmission.
I would even go so far as to completely drain the transmission and run the engine experiment again with the drain to the trans open, just to see if you get engine oil running out. At that point maybe remove the top cover of the trans and watch for incoming oil.
This just really doesn't add up unless someone did something wrong.
Let us know what you find.
