Brief Description: Installed Close Tolerance Spar Bolts
The remaining 3/16'' spar bolts were inserted in the right wing spar. This caused a problem with the two 1/4'' bolts that went into the outboard center section. Many bolts would not go in very easily and using a rubber hammer and tapping did not move the bolts. John McCreight was helping and reminded me that I had a brass rivet set for inserting the spar bolts. Using this set in the rivet gun and lightly tapping the bolt resulted in each bolt going in very easily.
The left wing did not have all of the nuts installed on the 3/16'' bolts and the 1/4'' bolts were much easier to insert. After inserting all of the bolts in the left wing, except for the NAS bolts, the outboard bolts in the right wing going thru the fuselage center section were removed. This allowed us to get the two 1/4'' bolts inserted thru the spar web holes.
The 3/16'' bolts were then reinserted and washers and nuts installed. The doublers for the front and aft sides of the spar were brought out, along with the NAS close tolerance bolts. I had placed the NAS bolts in the freezer overnight to see if they would shrink. The bolts warmed up very quickly, so the icing did not seem to have any benefit. A few bolts were inserted in the top front doubler, but did not go in easily.
John took each pair of doublers and found bolts that matched up to each hole. The brass rivet set was used to tap the NAS bolts into the top front doubler, spar and aft doubler. Joe Walker helped with inserting most of the bolts. Nuts and washers were installed and tightened using the pneumatic wrench. A torque wrench was used for tightening most of the 3/16'' bolts.
