Cessna 510 Mustang Structural Repair Manual page 51

C. The swage lock pin is usually installed in an interference fit hole to increase the strength of the joint.
6. Hi Torque Bolts
A. Bolts per NAS1580 with the Hi Torque recess are used in a number of locations. Use the proper sized MS33750 driver for
removal or installation of this bolt. The appropriate driver makes sure of the proper installation torque of the bolts. Refer to
Figure 6.
7. Adhesive Rivetless Nutplates
A. General
(1) Click Bond adhesive rivetless nutplates are installed with adhesive. To install a Click Bond adhesive rivetless
nutplate, it is only necessary to drill one hole in the structure and not three holes. A silicone rubber rod is used to pull
the adhesive rivetless nutplate through the hole (for correct alignment of the nutplate with the hole in the structure and
for a good bond between the nutplate and the structure).
(2) Click Bond adhesive rivetless nutplates are used in some screw installation locations such as the installation of the
windshield.
B. Removal (Refer to Figure 7).
CAUTION: When you break the adhesive bond between the nutplate and the structure, make sure that you do
not do damage to the adjacent structure.
(1) Put a 0.375-inch closed-end wrench over the dome of the nutplate and apply force on the opposite end of the wrench
until you break the adhesive bond (between the nutplate and the structure).
(2) Remove the nutplate.
(3) If the nutplate washer does not come loose from the structure when you remove the nutplate, remove the washer as
follows:
(a) Use Vise-Grips™ (or an equivalent tool) as a clamp and apply force on two opposite sides of the washer until
you break the adhesive bond between the washer and the structure.
(b) Remove the washer.
CAUTION: As you clean the structure where the adhesive nutplates are installed, do not remove the
(c) Do not remove the adhesive that is left on the structure after you remove the adhesive nutplate and the nutplate
washer.
NOTE:
C. Replacement (Refer to Figure 8and Figure 9).
(1) Make a cloth moist with isopropyl alcohol.
CAUTION: As you clean the structure where the adhesive nutplates are installed, make sure that you remove
only the weak surface layer of the adhesive footprint. If you remove the adhesive footprint, you will
not know the correct direction to install the pointed end of the new nutplate. In some installations,
the nutplate can come loose if not installed with the pointed end turned in the correct direction.
(2) With the cloth, clean the installation area carefully to remove only the weak surface layer of the adhesive footprint.
(3) If there is bare metal in the installation area, clean the bare metal and apply chem film protective aluminum surface
treatment. Refer to Protective Treatment of Metal.
(4) With a hand or pneumatic dispensing gun, apply sufficient 3M DP820 (or Pliogrip 7779) Adhesive to completely
cover the base of the adhesive rivetless nutplate. Apply sufficient sealant for the space between the assembled faying
surfaces to be fully filled with adhesive and for a small quantity to be pushed out in a continuous bead around the
periphery of the joint between the nutplate and the structure.
(5) For a more flush and perpendicular installation, put the nutplate in position with the pointed end of the nutplate in the
correct direction in accordance with the adhesive footprint.
Copyright © Textron Aviation Inc.
Retain printed data for historical reference only. For future maintenance, use only current data.
adhesive footprint (the adhesive left behind where missing or loose nutplates were installed).
If you remove the adhesive, you will not know the correct direction to install the pointed end of
the new nutplate. In some installations, the nutplate can come loose if not installed with the
pointed end turned in the correct direction.
The adhesive footprint (the adhesive left behind on the surface of the structure after the
nutplate is removed) of the missing nutplate will show you the correct direction to install
the pointed end of the new nutplate.
FOR TRAINING PURPOSES ONLY
ISSUE 02 , JAN 2018
Model 510 Structural Repair Manual (Rev 2)
51-40-03-0 (Rev 1)
Print Date: Wed Mar 21 05:10:19 CDT 2018
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