10
S
ECTION
4
6. Unlock the mast arm from the mast arm
support and move it into position.
a. Remove cotter pin from locking pin.
b. Remove locking pin.
c. Swing the mast arm towards the front of the
machine.
d. Line up holes on mast arm with holes on
mast arm support.
e. Put locking pin in hole.
f. Put cotter pin in locking pin.
7. Unlock the mast arm support from the signal
post and move into position.
a. Remove cotter pin.
b. Remove locking pin.
c. Swing mast arm support towards the rear of
the signal.
d. Continue swinging the mast arm until it stops
at the signal post.
8. Raise the main light post.
Note: Ensure there is no overhead wires or
obstructions when raising the main light post.