Huh, well I went and looked in the service manual for the 73, 106, 107, 126, 127, and 147, and nowhere for any of the 3 gear drive units specified in the book does it mention the torque for bolting the creeper unit. Closest I could find was the main reduction housing. I then looked in the Operator's manual for the same tractors, and there was almost nothing on the creeper unit at all.
Starting to wonder if there's even any specification for it at all
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'70 107 with k301 engine swap
'71 106 with 38" deck
'70 147
R with factory replacement k321, 42" deck
'61 Original with 38" timed deck
'63 70 "pinkie"
1863 with 54" deck
'46 Farmall H, '50 Farmall Cub
105 x2 (parts)