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Bob Leffler's RV-10
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Date: 1-3-2010
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Number of Hours: 2.00
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Manual Reference: 41-7, 41-8
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Brief Description: Cowl HInges #2
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41-7, Steps 1, 2, & 3
Fabricate eight Cowl Attach Shims from .020 thick 2024-T3 (2-15", 2- 14 1/8", 2 - 8 7/8", 2 - 6"). Locate a #40 hole in each shim as shown. Use a sharpie pen to draw a centerline on each shim.
Drill a #40 hole in the F-1001N-AFT-L &R Cowl Attach Hinges. Drill a #40 hole in the F-1001P-AFT-L & R Cowl Attach Hinges.
41-7 Completed
41-8, Steps 1, 2, 3, & 4
Cut pieces of hinge pin material to be approximately 1" longer than the cowl attach hinges and slightly round the ends.
Join the forward and aft hinge segments by mating the hinges and inserting the hinge pins. The hinge segments are kept joined during the fitting process to be sure that they do not become distorted and will fit together properly after installation.
Cleco the cowl attach hinges and shims to the fuselage as shown. Orient each of the shims such that the surface with the centerline mates to the firewall flange, not to the hinge.
While clecoed in place, align each hinge and shim so that they are parallel to the forward edge of the fuselage skin and that the shim edge does not protrude forward of the skin edge. The centerlines drawn on the shims should be visible through the holes in the skins and firewall flange. The centerlines will deviate slightly from the hole centers in the middle of the shims when properly aligned at the ends. Use spring·clamps to hold the hinges and shims aligned.
Match Drill #40 the shims and hinges to the fuselage using the holes in the skins and firewall flanges as drill guides. Begin match-drilling at the pUot-drilled ends of the shims/hinges and progress to the other end re-checking alignment every few holes. For the F-1001N-AFT-L & R Cowl Attach Hinges match-drill one hole past the end of the F-1001 N-SHIM-INBD Cowl Attach Shim, cleco the F-1001N-SHIM-OUTBD Cowl Attach Shim in place, then align the centerline and continue match-drilling.
The garage started out at 32 this morning, but was able to heat it up to 60.
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Right top hinge match drilled
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Cowl Hinges with starting hole drilled
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Shims with starting hole drilled
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