Polarization Drive Installation - Andrew 4.9-Meter ESA Operating And Maintenance

Polarization Drive
Installation
Step 1
Step 2
Step 3
Attach the Polarization Drive Assembly as shown in Figure 11. Measure and cut chain to
proper length.
Attach chain to coupling link on each end with supplied connecting link.
Pull pillow blocks and sprocket assembly back until chain is tight. Tighten bolts holding
pillow blocks in place.
Note: If a motorized polarization drive or LNA support kit is to be installed, ensure these
installations are complete before installing the combiner.
Note: When installing the feed combiner, rotate the feed tube all the way in either direc-
tion. The polarization orientation can be better determined while in this position.
Pillow
Blocks
Chain
1/4 x 3/4" Socket Head Screw (9972-6),
.19 x 1.25" Socket Head Screw (9972-59)
and #10 Lock Washer (9974-68)
#6-32 UNC x 1/2" (9972-46)
and #6 Lock Washer (9974-67)
Rear View
Figure 11
21
302342
Coupling Link
302374
Chain Connecting
Link
3/8 x 3/4"
Socket Head Bolt
(9972-87)
302365
Manual
Polarization
Drive Assembly
Installation Procedures
302346
Tube
Rotation
Stop