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L-804 Elevated Runway Guard Light
96A0218 Rev. X
Installation
© ADB bvba All Rights Reserved
10
2.3.5.1 Horizontal Aiming
NOTE:
See Figure 5 and “Installing Coupling (Unmonitored)” on page 14 or “Installing
Coupling (Monitored)” on page 14 before proceeding. Back out or remove the two hex head
set screws that are in the side of the baseplate hub so that the coupling can be screwed into
the hub.
Before screwing the coupling into the baseplate, use a black marker to put “tick mark” in line
with the slot and above the frangible groove as shown in the photo below. The tick-mark will
aid in locating the slot after the coupling is screwed into the baseplate hub
1. Apply anti-seize paste on threads and then screw the frangible coupling into the hub on
the baseplate until the frangible groove is just above the top edge of the hub.
Locate the set screw hole in the side of the hub that is nearest to the slot in the coupling by
locating the “Tic-mark.” Rotate the coupling, either clock or counter-clockwise, until the
“tick-mark” on the coupling is in line with the set screw hole in the hub.
NOTE:
It is important to make sure that the slot and the set screw hole are aligned
because of the close fit between the slot and the ¼-20 screw. The close fit between the
screw and the slot prevents the coupling from turning and loosening when the face of the
RGL is subjected to jet engine exhaust or wind.
2. Thread the set screw into the hub and through the slot in the coupling. The screw must
pass through the slot so it does not tightened against the screw threads on the coupling.
Hand-tighten this screw only until final horizontal aiming has been completed.
2.3.5.2 Adjusting Horizontal
Setting
To adjust the horizontal setting, perform the following procedure:
1. 1. Thread the set screw into the hub and through the slot in the coupling. The screw must
pass through the slot so it does not tightened against the screw threads on the coupling.
Hand-tighten this screw only until final horizontal aiming has been completed.
2. See Figure 3 and photo below. Locate the four Phillips head screws – ref Item 8 in Fig 3
and loosed them so that the frangible coupling can be inserted into the hub. Also, if
necessary, loosen the two 3/8-16 allen hex head set screws in the RGL adjustable joint –
Ref Item 7 in Fig 3.
NOTE:
The Zero (“0”) on the horizontal label that is affixed to the frangible coupling, has
been aligned at the factory with the index pin pressed into the lower hub of the adjustable
arm. This alignment will then allow the 10-32 screw to be screwed into the top center
Zero (“0”) hole and pass through the Zero (“0”) hole that is located at the top of the
coupling. See figures above.
Place “Tick-
Mark” Here
Zero (“0”) Screw Hole
Zero (“0”) Hole