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I have a John Deere 4120 tractor and would like to know where I can purchase a service manual for the 400x loader and 448 backhoe online. I need to do some piston rebuilding on the 400x loader, so I'd like to have a service manual. Even if you have the part# it would be helpful Thanks so much! andy

I have a 2006 JD 4120 with 400cx loader. I have fork and bucket attachments. With either, if I have a load or not, the tilt part will not hold. In other words I can lift the forks all the way up and leave the machine idling for 5 min. The lift stays the same, but it won't hold the tilt. It...