Thanks for information re owner of H321. Any information re Hayes has my interest- and hopefully others. I guess I am "insatiable"
. H321 came in a series of 6 units to MB all preloaders; numbered #H316 to #H321. They all had set forward axles. As far as I know only #H316 has been scrapped
the rest are still going strong/parked. #H317 is working as a tractor for Surespan, Vancouver. #H318 present owner is LLL. Truck runs with a huge dump trailer. Re #H319 later HFP #T8158 I am not sure if it has been sold. As you mentioned HDX #H320 is still running with you guys. Re #H321 I think it might be at QCI, but Trackloader will know.
TorkelH has posted a picture of #H316. See link:
https://www.heavyequipmentforums.com/showthread.php?t=16755&page=14
Pic1 shows #H317 summer 2000, Pic2/3 show #H318 at LLL shop summer 2005, Pic4 shows HFP #T8158 ex #H319 at Sarita summer 2005.