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Message: <blockquote data-quote="OldMachinist" data-source="post: 46417" data-attributes="member: 437">Here's a few things to check.Raise the bucket a about 18" , get out and lift the front edge and see how much play the pivot pins have.Pull the plug on the front of the chaincase, oil should be level with hole and not milky. If oil is milky it will need to be changed(it holds 8 gals.). If oil is clear but way over full then one or both of the motor seals are leaking.Check the hydraulic fluid to make sure its clear and isn't foamy after working it.Lift cab and look for any fresh oil that may be leaking from hoses or the control valve. If everything has been recently cleaned do this after running it.Drive it up to a solid object like a large tree and see if it will spin the tires in dirt.If it has a BobTach make sure its working and the bucket will come off.If they allow do a compression check on the engine. If you can't do that see how easy it starts cold.Jack the machine up, hold one tire and rotate the other back and forth to see how much play the drive chains have and if both sides are about the same.Have a look around the axle flanges for leaking axle seals.</blockquote>