27
Installing Above Deck Unit (ADU)
NOTE
NOTE
• Make sure the cable from the mast is aligned with the cable entry on the bottom of antenna for
stable connection.
• Refer to
"12.1 Appendix A. Tightening Torque Specification" on page 89
for the bolt
tightening torque.
Use a torque wrench.
M12 Flat Washer
M12 Spring Washer
M12 x 60L
Hex. Bolt (BUMAX)
5.8 Mounting Antenna on Mast
1. Bring M12 x 60L Hex Bolt sets (4 ea) for antenna-mast assembly from the ACU box.
2. Place the antenna on the mast and align the mounting holes of the antenna with those of the mast.
3. Before assembling bolts, apply Loctite #263 to the bolt threads to ensure the bolts are fastened firmly.
Insert the bolts and washers from under the mast into the radome, and lightly tighten them by hand
into the built-in nuts on the bottom of radome. Install 4 bolts in a criss-cross sequence as shown in the
figure.
4. After installing all 4 bolt sets, fully tighten the bolts using a torque wrench.
5. After mounting the antenna on the mast, remove the lifting strap.
Figure 13: Installing Sequence of Bolts
1-1
2-2
2-1
1-2
Figure 14: Installing Bolts for Antenna-Mast Assembly
WARNING
WARNING
If a bolt does not fit into the mounting hole when installing the bolt by hand, stop installing
and check the bolt size. DO NOT tighten the bolts forcefully. It may cause damage to the inner
threads of the mounting holes of antenna. In this case, the damage is not covered by the
warranty.
