TM5-3810-307-10
k.
When the pin on the spotter slide is aligned with the seventh hole up from the foot
roller (or higher if required), pull the spotter slide pin back and hold. Remove the
retainer pin, release the spotter slide pin, and it will engage the hole in the back of
the lead tower.
l.
Using the crane boom, lower the lead tower and spotter. Disconnect the pile line
(aux. hoist), wire rope lifting sling, and headache ball from the center lifting lug on
the spotter.
Perform the following procedure to install the spotter on the crane with a 60-foot (18.3 m) four-
section lead tower:
a.
Ensure the Load Moment Indicator (LMI) system on the crane is configured for
Rear Hoist, Outrigger Position 100%, and Two (2) Parts of Line.
b.
If not installed, attach a rope tag line to the manual release on the spotter slide.
c.
Attach a wire rope lifting sling with a shackle to the center lifting lug on the spotter
and attach the headache ball on the pile line (aux hoist) to the wire rope lifting
sling.
d.
Using the pile line (aux. hoist), hoist the spotter and place on wood blocks directly
in front of the rear of the crane with the slide pointing away from the crane with
approximately eight feet (2.4 m) between the crane and the spotter. Wood
blocking under the spotter slide must be high enough for the slide to pivot without
contacting the ground.
e.
Disconnect the pile line (aux. hoist), wire rope lifting sling, and headache ball from
the center lifting lug on the spotter.
f.
For spotter installation use a boom length of 59-feet (18 m) for a 60-foot (18.3 m)
lead tower (four sections).
g.
Using the crane boom, move the lead tower and place above the spotter slide.
Then, holding the spotter slide vertical, align the lead tower with the spotter slide
and lower the lead tower to engage the spotter slide.
h.
Attach the wire rope lifting sling with a shackle to the front lifting lug on the spotter
closest to the lead tower and attach the headache ball on the pile line (aux hoist) to
the wire rope lifting sling.
i.
Using the pile line (aux. hoist), raise the spotter slide along the lead tower to a
height of approximately four feet (1.2 m) from the ground.
j.
Remove the retainer pin in the spotter slide, and pull the rope tag line attached to
the manual release on the spotter slide to disengage the pin from the hole in the
lead tower. Hold the spotter slide pin in the retracted (disengaged) position.
CAUTION
The spotter slide pin should not be allowed to engage a hole in the
lead tower lower than the seventh hole up from the foot roller.
This will ensure that the spotter will not make contact with and
damage the spare tire mounting bracket.
k.
Using the pile line (aux. hoist), raise the spotter slide until the pin on the spotter
slide is aligned with the seventh hole up from the foot roller. Release the manual
release on the spotter slide and the spotter slide pin will engage the hole in the
lead tower.
H-46 Change 1
