Doc # 6.02.01 Page 203
Rev. 4 09 Jan 2003
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AMM
Rear Main Bulkhead Bushes
Figure 3: Wing Main Bolt Installation
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Wings
AMM
%
DA 40 Series
Detail Steps/Work Items Key Items/References
WARNING: USE 3 PERSONS TO LIFT THE WING. IF YOU DO NOT, YOU CAN CAUSE INJURY. CAUTION: DO NOT LIFT ON THE FLAP. YOU CAN DAMAGE THE FLAP.
Note: For the rest of this procedure, one person must lift the wing tip. One person must lift the leading edge at the root rib. One person must lift the trailing edge at the root rib.
(12) Remove the main bolts: S Take the weight off the wing. S For each bolt: S Install the main bolt removal tool. S Extract the bolt. If necessary, move the wing tip a small amount up and down to help release the main bolts.
(13) Lift the wing away from the center section. Make sure that the electrical cables do not catch on the center section conduit.
(14) Put the wing on trestles or a wing stand.
Note: If you use trestles, put one trestle under the spar stubs. Put the second trestle under the wing end rib.
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C. Pre-Installation Check
Do this check before you install the wings.
DA 40 Series
Detail Steps/Work Items Key Items/References
(1) Examine the inner faces of the front and rear main bulkheads. Look specially for: S Damage to the main bolt bushes. S Damage to the structure round the bushes. S Looseness between the bushes and the main bulkhead. S Damage to the top and bottom shells of the center section (where the spar stubs can touch the shells during wing removal). S Delamination between the main bulkheads and the shells. Refer to the manufacturer if you find damage in any of these areas. Clean the bushes.
(2) Examine the front, middle and rear end ribs in the center section. Look specially for: S Damage to the A and B-bolt bushes. S Looseness between the A and B-bolt bushes and the end ribs. S Delamination between the end ribs, the main bulkheads and the shells. Refer to the manufacturer if you find damage in any of these areas. Clean the bushes.
(3) Examine the wing spar stubs. Look specially for: S Damage to the main bolt bushes. S Damage to the spar stub around the bushes. S Looseness between the bushes and the spar stub. S Delamination between the spars and the shells. Refer to the manufacturer if you find damage in any of these areas. Clean the bushes.
Page 206 Doc # 6.02.01 09 Jan 2003 Rev. 4
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Wings
AMM
DA 40 Series
Detail Steps/Work Items Key Items/References
(4) Examine the wing root ribs. Look specially for: S Damage to the A and B-bolts and bushes. S Damage to the front and rear root ribs around the bushes. S Looseness between the bushes and the root ribs. S Delamination between the root ribs, the spars and the shells. Refer to the manufacturer if you find damage in any of these areas. Clean the bolts and bushes.
(5) Examine the main bolt assemblies. Look specially for: S Corrosion of the end-pieces or tube. S Corrosion of the main bolts. S Scratches on the bearing surfaces. S Deformation. S Damage to the threads for the removal tool. Clean the main bolt assembly. Remove corrosion. Repair the surface finish. Refer to Section 51-20. No corrosion permitted. Maximum depth 0.1 mm (0.004 in). No deformation permitted. Replace the bolt if you cannot attach the removal tool correctly.
(6) Measure the radial play of each main bolt in the related main bulkhead bushes. Maximum radial play 0.2 mm (0.008 in).
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