[arcticdude]

That's a very interesting find.  I've now had 2 coaches with Chelsea hydraulic pumps.  With the first one, I went to the local Chelsea dealer inquiring about spline grease.  They gave me a little packet that looked exactly like the one shown at the bottom of the spec sheet Steve posted.  Even though the Chelsea sheet says the data sheet is on the back of the packet, there's only what to do if somebody consumes it on the back of the packet I have.


For the second coach, I ordered a tube of spline grease from Chelsea.  I was sent a tube of Schaeffer's #279 Spindle & Coupling Compound NGLI #2 Aluminum Complex.  I have not been able to find a spec sheet specifically for the Schaeffer's grease.  The only place that seems to sell it is either Schaeffer's directly or Chelsea.  Schaeffer's wasn't willing to give me the specs on the grease.

The Wanderlodges have the hydraulic pump driven off the transmission, instead of the engine.  They don't break shafts, but they do have fretting that can occur, so there's all kinds of ideas about how to stop that.  I just grease mine and that seems to be enough to prevent issues so far.