mg2361
Senior Member
Symptom was park brake slow to release or does not release at engine idle (Trans oil level good, always the first thing to check with this complaint). Found the transmission filter had come apart internally and pieces got stuck in the transmission pressure relief valve creating low pressure at idle (130 psi) but good pressure at 2000 rpm (300 psi). From the debris in the filter picture I discovered this was not the first filter to have failed on this machine. The big pieces came out of the pressure test port. If you own or work on any JD 310SJ's, SK'S or SL's, make sure you use the updated transmission oil filter AT466863 (white in color) and not the original filter AT179323 (black in color) or your machine could end up like the pictures.
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