Grouse Feathers
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Equipment
BX2370, FEL, Snowblower-BX5455, Homebuilt Forks, LP RB1560, LP GS1548
Bruce and NFWASAE specifications call for Cat 3 hooks for Cat 1 quick hitches.
My Land Pride QH05 Cat 1 hitch has Cat 2 bottom hooks and a Cat 3 top hook.
My HF Cat 1 hitch is all Cat 3 hooks.
Larger hook size on Cat 1 hitches isn't for larger implements, as the bottom hook spacing is too narrow for Cat 2 or 3 implements. I've no idea why they were designed that way, but maybe so replaceable bushings and pins would wear out instead of permanent hooks wearing out.
Bruce
Thanks for correcting me. Sometimes I learn when I am corrected for being stupid. At least I feel stupid for that post, but hey learning is always good.