pirlbeck - 9/13/2020 16:06
TdsID - 9/13/2020 13:32
pirlbeck - 9/13/2020 13:21
I just re-read you original post and now I am second guessing myself. For some reason I took you original post to mean that you were running a hydraulic DRIVEN hay rake, that would use a hydraulic motor to run the basket. If that is not the case, and the only hydraulics being used are a lift cylinder, then disregard my posts pertaining to hydraulic motors.
If it is just the lift cylinder, then I am thinking something is messed up with the way the clutch is put together or the way it is adjusted.
I still don't like to see those manual by-pass valves opened because all too often they are forgot about and left open and it will cause accelerated clutch wear.
Sorry for the confusion.
No worries! After reading your previous post, I deducted that it wasn't caused by the bypass valve because it would only be used at the end of each windrow and would therefore have plenty of opportunity to keep the clutch lubed. Yes, the rake is a ground driven wheel rake that uses hydraulic controlled cylinders to adjust it. I should've clarified that earlier.
This is not entirely true. If the system was working 100% normal it would or should be true, but if you had a high pressure leak
(SCV or rockshaft valve problem
) to the return circuit with the manual by-pass valve open, it would dump the return oil to sump and it could short the charge/lube circuit. If you had a hi pressure leak to return with the manual by-pass valve closed, the only symptom might be heating of the hydraulic oil if the leak was large enough and possibly short on HP/excessive fuel consumption.
JD 4430 burning up clutches
