CAB BODY REPAIR - CONTINUED
ALUMINUM REPAIR - CONTINUED
Rivet patterns are denoted by rivet spacing and rivet edge distance. Rivet edge distance is distance from center of
rivet to nearest edge of sheet. Rivet spacing is defined from center of rivet to center of adjacent rivet.
Required rivet spacing is determined by strength needed in joint. General feel for strength required can be obtained
by inspecting rivet patterns in surrounding areas. Body repairs made using single rows of rivets should be per-
formed using rivet spacing not greater than 1-1/2 in (4 cm), and not less than 5/8 in (16 mm). Use 1 in rivet spacing
as general practice for repairs. Rivet spacing used in original construction may be greater due to additional strength
obtained by using foam adhesive tape. Do not use rivet edge distances less than 3/8 in (5 mm).
High-strength joints or large area patches may require use of double or multiple rows of rivets to obtain sufficient
Be careful not to distort original holes to prevent damage to equipment.
Care must be taken to ensure rivet hole patterns are transferred accurately in the case where part with no holes is
mated to one which already has rivet holes. Hole patterns may be transferred using one of the following:
Lay new part in place and use holes in mating part as drill template. New part must be underneath mating
Use removed part as drill template by clamping old and new parts together. Parts must nest flat and rivet
flange must be undistorted.
TRIPLE OR MULTIPLE ROW RIVETING PATTERN
D= DIAMETER OF RIVET
3X THICKNESS OF
DOUBLE ROW RIVETING PATTERN