I have broken an adjustable lift link on my yanmar 1700 while moving dir with a rear scoop. my guess is the constant banging of pushing into a pile, and then scooping out 500# of irt finally got it after about 30 loads.
I buzzed one together froma universal one found at TSC.
Have also had old antique unis have the threads gice out and had to fix them with big nuts or threaded rod.. etc.
soundguy