I have a d6r lgp 2002 and I am having trouble trouble steering , I had cat out twice and the mechanic told me the hydraulic pump wasn't putting up enough psi , I pulled pump off and had it took apart and re sealed and tested , nothing wrong with it , put it back on and same problem , it will barely turn when the oil he's hot , I felt like this is a common problem , has anyone else had this problem ?
I think there is a relief valve and compensate valve for the diff steer,so there might be something going on there.I was thinking that my mechanic said there is a office that can get debris in it and well affect the steering.You need to put gauges on it and check pressure while you are turning the machine.Good luck