First set tire pressure as high as you can or want to. Then I would jack up rear end to grease king pins. Don't know about the RWA but the 2WD units need to be jacked up to get grease to pressure points especially if the bushings are getting worn. Third I would check and adjust the steering pressure. I believe the '94 was the first year with an external steering relief setscrew after a few years of not being able to adjust. We adjusted most all our machines for most were low. There was a bulliton on that valve for some of the first ones had to snug of a fit for spool and some would hang up. I replaced one of them valves but the main problem was pressure set to low. The previous years to the '94 when they had gear type hydralic pumps had a pressed in plug within a spool which was non adjustable unless you were brave enough to press in a bit more and give it a try. I had a couple of them systems with low pressure so I replaced the spool assembly. Prior to 1989 1_2 with piston pump systems were generally pretty good about having the right pressure but there is a couple things that can limit them too. I've havn't had to even check the pressures on the latest system for they have been perfect. Remember tire pressure, grease, and tee pressure gauge into steering line and compare with specs.