6
Step 3.
Identify the four EXR Struts of the correct size for this level of the EXR.
Keep in mind that the EXR is being assembled upside-down, and so the first EXR
Horizontal Support Assembly is the top level. The struts will provide component
spacing equal to 3.5 inches less than their total length (including threads).
e.g. Struts that measure 13.5 inches end-to-end will provide 10 inches of spacing.
If you will be using HRS Isolation Bases in your EXR, remember that the isolation
bases are approximately 3 inches tall when determining your required spacing.
Fully thread one strut onto the threaded cap in each EXR Frame Mount (photo 3).
Use the provided HRS Grip Pad (photo 4) to tighten each strut between
1
/
4
and
1
/
2
rotation past when it contacts the polymer ring.
Photo 3
Photo 4
Step 4
.
Place a polymer ring around the threads of each strut just as you did for
the caps on the top level. Be sure the polymer rings sit fully on the strut as shown
in photo 5. The polymer ring should sit on the non-threaded shoulder just below
where the thread stops. Apply a few drops of WD-40 3-in-1 oil to the ends of these
threads as well.
Photo 5