are you talking about the winch motor? The Goshen lift system used on the Rockwood and Flagstaff popups do not have a whiffletree, I believe that is/was a Coleman lift part.
If so, the carefree winch motor on the newer pups is noisy and yes, IIRC the manual says it does NOT require grease.
There was an older model winch motor that did require grease BUT that motor was discontinued around 2013 or so. The old style motor was on our 2011 pup, it was quieter but did not last, we had to replace it after 5 years with the new model. Took awhile to get used to the noise it made.
HTT: "EscapeII" 2016 Shamrock 23WS (current)
PUP: "Escape" 2010 Rockwood HW 277 (gone)
TV: "Bruce" 2011 Dodge Durango V8 Hemi Crew
Just us gals (me, Sis and our daughters)
Traveled 19520 miles and 209 nights in 7 years and counting