Retorquing Mounting Bolts; Figure 4-1 Sequence For Torquing Mounting Bolts - ADB F-Range L-850C Manual

F-Range Type L-850C Style 3 Inset Lights
Cleaning Light Channel and
Prism (contd.)

Retorquing Mounting Bolts

Figure 4-1 Sequence for Torquing Mounting Bolts

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2. Clean the outer surface of the prism (3) using liquid glass
cleaner. If the prism is coated with a substance impervious to the
cleaner, apply a suitable solvent sparingly with a wad of cotton or
a patch of cloth. After the solvent has acted, remove the
softened coating with a clean piece of cotton or cloth. Dry the
prism with gently, dry, oil-free compressed air at a pressure no
greater than 10 psi (69 KNt/m
remaining cleaner.
When retorquing mounting bolts, apply one drop of Grade AV Loctite
to each of the six 3.8-inch- (9.525-mm-) diameter mounting bolts.
Torque the bolts to 185 5 inch-pounds (20.902  0.565 Nt-m).
Torque the bolts across the corners.
See Figure 4-1. To torque the outer bolts across corners, tighten
bolts in noted sequence: #1 and #4, then #2 and #5, then #3 and #6.
NOTE: Applying more than one drop of Loctite to the screw and bolt
threads will create future difficulty in removal of the bolts.
NOTE: After several relampings, threaded holes may accumulate
with dirt and excessive Loctite. If this occurs, screws may not seat
properly. Clean holes with light weight oil or diesel fuel using a small
fiber brush. Wipe the holes clean with alcohol to remove all oil or
diesel fuel and dirt. Clean with dry, oil-free, low-pressure air.
96A0285D
Issued 04/13
Maintenance
) to evaporate or remove all
2
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