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Installation of the DXE-RT4500HD Rotator
NOTE: If you are replacing an existing Rotator – you must verify rotator mounting holes in your existing
rotator shelf, and your existing mast OD does not exceed the OD specification on the chosen Mast Clamp (2
or 3 inch OD).
Additionally, you may want to use two of the DXE-MASTLOCK - Mast Anti Rotation Assemblies for Use on
Antenna Towers to hold your existing 2 or 3 inch OD mast in place while the old rotator is removed
and the DXE-RT4500HD rotator is installed.
If you are using a non-DX Engineering rotator shelf, ensure the rotator bolt pattern is correct (see Reference
Information later in this manual) and there is an opening on the bottom to allow moisture drainage from the
weep holes on the bottom of the DXE-RT4500HD.
The following installation example uses a Rohn 45G tower, DXE-AS455G Rotator Shelf,
DXE-RTMC-2 Two Inch Mast Clamp, DXE-TB300 Thrust Bearing. A temporary 2” aluminum
tube to simulate a mast (it will be replaced with the steel mast in a later step),
DXE-ST200CM-22 Two Inch OD Mast
and JTL-12555 Jet-Lube
®
SS-30™ Anti Seize
NOTE: Your installation may vary – this is only one example of the installation.
The Thrust Bearing (DXE-TB300) is installed on the upper flat bearing plate on the Rohn 45 tower.
The four bolts holding the TB-300 in place should be fully and properly tightened in place and use Jet-Lube
®
SS-30™ to avoid galling and Loctite
®
- 242 Medium Strength Threadlocker (blue).
The three bolts that snug against the mast should be evenly loose to allow the 2 inch mast to pass through.
These bolts will be tightened in a later step.
