[kdiel11]

Today myself and an AI started work on 34S not only to begin putting her back together after we pulled the back engine and tailbooms but also to begin her Annual. He was looking things over near the landing gear actuator and noticed one of the shear pins attached next to the universal joints had sheared off. A look inside the hole that the sheared pin left showed that the shaft inside the collar had rotated appx. half of the hole diameter. A look at the other side showed that one of the two shear pins in the inboard side had also sheared off and shifted appx. half of the hole diameter. The remaining shear pins on on each side (two at each point inboard and outboard) were still intact in the universal joint but with further inspection and removal I would tend to believe they are sheared as well but just remained in the hole vs falling out.
The question to you all is could this have caused my problem in the beginning vs the power pack. A scenario I am thinking of has the pins finally shearing the last time the gear were cycled into the up position. Once that occurred and the gear lever was moved to the down position the gear simply flopped out of the wheel well and dangled there. When we tried to pump them down and the hand pump was so stiff, that was because the power pack was also trying to put them down as well but could not due to the shear pins be sheared.
So any thoughts as to this scenario? I guess one way to check is to get it up on stands and then hook up to a mule and cycle the gear handle. IF I can see the inner portion of the gear actuator spinning in there with no movement of the gear, then it would be safe to assume that the shear pins caused the failure. IF the actuator does not move, then it is back to the power pack for trouble shooting.
Again, any thoughts on this would be greatly appreciated. KD