CARGO, BODY REPAIR (Con't).
Care must be taken to assure rivet hole patterns are transferred accurately in the case where a part
with no holes is mated to one that already has rivet holes. Hole patterns must be transferred using one
of the following methods:
Lay a new part in place and use holes in mating part as a drill template. This requires new
part be underneath the mating part. Care must be taken not to distort original hole.
Use removed part as a drill template by clamping the new and old parts together. This
requires that parts nest flat and rivet flange be undistorted.
For repair of huc rivets, punch damaged rivet out and replace rivet with self-tapping screw
(see page F-35, item 38 for parts information).
d. JOINT DESIGN
Loads are applied through a joint to fasteners that hold the joint together. These loads are applied to
fasteners in the form of shear loads or tension loads. If load is perpendicular to axis of fastener, the
fastener is loaded in shear. If load is along axis of fastener, causing a pull on each end of fastener, the
fastener is loaded in tension.
Rivets (1) are designed to be loaded in shear. Do not create any new joints during repairs that cause
rivets to be used in a tension application. Bolts (2) should be used for tension applications or substituted
for rivets in very high shear load applications.