Not sure about the 16 but my Q20 has to have the plastic "pin" in it so the jaws will close. Then I can get to the zerk. One of them is down through the hollow plastic pin I think. Been awhile, overdue.
You may have to buy a plastic pin from a dealer. It took me awhile to figure out why they gave it to me.
May not be your issue though.
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2018 Ram 3500 Laramie CC DRW LWB 4X4 Cummins Aisin 3.73
Reese Goosebox 20K
2018 Heartland Landmark 365 Oshkosh
2008 Bigfoot 25C9.4 LB Cabover
2023 CanAm Defender SXS
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