Posted 3/16/2011 11:21 (#1673201 - in reply to #1673169) Subject: Re: John Deere 9520
North of Iowa
I would pull the drain oil plug of front and rear diff. had a friend with a 9620 had to replace both, cost him over $50,000. He bought tractor new, never was run low and does good maintance. Was about 3000 hrs.on when front went out in 2009 and rear 2010, not sure.