My husband greased the axles on our 2017 2109S and got replacement rubber parts that fit on to the end of the axle. He has been working all afternoon trying to get them back on. He's hot and frustrated. I'll try to attach photos of the part and the axle. How do you get the darn things on?
put lip of cap in groove and work around in a circle. turn wheel 1/ 4 turn while pump 3-4 pumps ,turn ,pump repeat. i just pull trailer forward to do this. till grease comes out of front axle. i pull and inspect every few years. worked for me 15 years
I think they are referring to the dust cap reinstall.
I would try some windex or soapy water in the groove of the cap, slip one edge into place and work around till it pops in place.
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Marc in sunny California
2013 Crusader 260 RLD
2012 RAM 2500 Laramie CTD and 4:10