20
20
111628E
Revision date: 02.16.23
1
3 Tek Screws
for each arm
5. Install additional Tek screws through the 4-way coupler and into
the support arm. Total number of Tek screws is three (3) for each
support arm.
Tighten all Tek screws in the center support.
6. Release the support arm and verify that the 2-way fitting remains
tight against the string line to indicate that the middle support arm
is level with the support arms at each end.
7. Remove the string line and repeat the steps to install the additional
Tek screws at each level.
8. Once all middle support arms are secured to the 4-way couplers,
continue with the next procedure.
2-Way
Fitting
STEP 4
String Line
Middle
Support Arm
Outer Rail
Assembly Instructions — Level Middle Support Arms (continued)
3. Have someone crawl between the outer rails to inside the frame.
That assistant will need FA4482B Tek screws, a Magnetic nut
setter (3/8" x 2-9/16"), and a battery-powered drill.
4. Next, push up or lift the outer frame rail
until the 2-way fitting is
tight to the string line. Hold in place
. If possible, lift the support
arm and outer rail an 1/8" higher than the line.
