Carmanah M850 & M860 Self-Contained LED Lantern Instructions
v1.
1
Jan
201
6
19
bolts and the top of the lantern’s base, as shown in the above figure. The mounting bolts
should be torqued to 40 to 44 ft-lbs (4.5 to 5 N m).
Fixed-Aid Mount
½”-13 UNC All-Thread,
3 ea on a 7-7/8” bolt circle
Lantern
Jam Nut
Nut
Flat Washer
Platform
Nut
All-Thread
Or Bolt
Lock Nut
Washer
Washer
Mount the lantern
on a fixed aid
as shown in the figure above. The lantern should
ALWAYS be mounted with 3 bolts (or lengths of all-thread), never 4. The bolts will
shadow the solar panels if they extend too far above the lantern’s base. Therefore, after
securing the bolts (or all-thread) to the structure’s mounting plate as shown in the figure,
install three jam nuts and washers on the bolts so that only about 1” of thread is exposed
on top. Place the lantern on top of the jam nuts, then drop on the washers and position
the uppermost locknuts at the very upper end of the thread. Do not tighten these
uppermost nuts yet – they are positioned at this time to ensure that the lantern doesn’t fall
off. Level the lantern by adjusting the jam nuts (use a torpedo level on the base plate of
the lantern - use the “T” method described in the Short Range Aids to Navigation
Servicing Guide COMDTINST M16500.19A). When the lantern is level, tighten the
upper-most nuts to 40 to 44 ft-lbs (4.5 to 5 N m).
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