INSTALLATION
MANUAL
Section 1: MECHANICAL INSTALLATION
5) Apply large bead of Plexus adhesive to
the hull structure as shown in the
figure to the right. Apply
approximately 1 ½ cartridges at each
of the four locations. Work deliberate
and fast as it takes some time to apply
the adhesive to the structure. MA590
has a 90 minute working time at room
temperature (23°C / 73°F). This
working time can reduce to 40-50
minutes at elevated temperatures.
Two workers should apply the
adhesive at the same time to finish
the installation before the adhesive
starts to cure.
6) Lower fixture and saddles over the
hull structure and apply light
downward pressure to each of the
four saddles until the four nylon screws
rest on the hull structure (SEE FIG. 8).
The adhesive will be forced towards the
forward and aft ends of each saddle
and partially down the sides of the
foundation beams.
7) Insert full adhesive cartridge along with
mixing wand / nozzle assembled in step
3 above into gun.
8) Begin to inject adhesive into the six
holes provided on each side of each of
the four saddles. Follow the numbered
sequence shown until the adhesive
pushes out the edges of the saddle
perimeter. The intent is to pump in the
adhesive working from the top down
and from the middle to the ends to fill the gaps and displace any air. A complete bond is required –
excess adhesive will be needed to make sure all bond gaps are filled.
9) Repeat above step for remaining 7 sides of the saddles.
10) When gaps have been completely filled, clean off excess adhesive, remove foam tape, remove plugs,
and remove masking tape.
11) Allow adhesive to cure per manufacturer’s recommendations. Follow adhesive guidelines for curing
time versus temperature.
12) Bonding of gyro saddles onto the hull is now complete. Remove installation fixture.
OF PLEXUS IN ONE
LARGE BEAD, 4 PLACES
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