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Toms RV9-A project
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Date: 7-22-2012
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Number of Hours: 0.00
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Manual Reference: 9-2
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Brief Description: Installing the Canopy Release
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Make the C-620 bearing block shown on DWG 47. Drill the bolt holes to the dimensions shown.
Fabricate and/or install the canopy release mechanism components C-620, C-621 , C-622, Wd-618, Wd-619, Wd620,
and the modified AN438-16 bolts. See DWG 47. The entire pushrod/bellcrank assembly can be preassembled
on the bench, with all its clevis pins, thin washers, and cotter pins. This will allow you to install it in one
piece without having to lie on your back installing cotter pins, etc. Experiment with installing the assembly with the
top skin removed so it will be familiar when it is time to install it after the skin is riveted on.
When drilling the Wd-618 to the Wd-619 be sure the arm on the Wd-619 is llclocked" to the correct position (with the
ears on the Wd-619 pointed outboard) and that the elevation is correct. It must center vertically as it swings through
the pre-punched cutout in the F-768 bulkhead.
Fit the mechanism to the forward fuselage and align the C-620 bearing block on the F-697 channel. The horizontal
position is determined by the side-to-side pushrods. The vertical position is determined by the fore-and-aft pushrod.
Clamp the block to the channel and work the mechanism. Adjust the block position if necessary to align the
pushrods and eliminate any binding. When the block position is correct, drill the C-620 to the F-697 using the holes
pre-drilled in the block as guides.
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