This design offered only limited protection. Because tunnel shielding is still open at the bottom, clothing, shoelaces, hair, etc. can be caught by the shaft or universal joints. If it must be used, power shafts and shielding should be replaced with safer, modern components. Proper installation A PTO shaft may break or separate during operation if improperly used or adjusted. If it does, the tractor-driven end can swing violently, with the potential for severe equipment damage and operator injury.
New equipment is fitted with the driveline recommended for that particular machine.
Make very sure that all replacement driveline components conform to the same specifications. The tractor drawbar should be adjusted to the length specified in the driven machine's manual. This ensures that the telescoping power shaft and shield will stay together when they lengthen in operation. This puts considerable strain on shaft and bearing supports, and the entire driveline may be damaged or bent. Use your safety sense To perform its intended function, farm machinery has to operate in a very powerful, aggressive fashion.