TM 5-3810-307-10
NOTE
Ensure that the crane operator is aware that the hammer line
(main hoist) connection was removed from the hammer trip
assembly.
x.
When all personnel are clear of the suspended impact hammer, have the crane
operator turn the CRANE FUNCTION POWER switch to the ON position to return
power to the crane functions controlled by the armrest joysticks.
y.
Continue lowering the impact hammer with the pile line (aux. hoist) only. Prior to
placing the impact hammer completely on the ground, lower the hammer trip
assembly to the bottom of the hammer trip track rails. Install the red trip transport
bolt in the hammer trip assembly to secure it in place.
z.
Using the pile line (aux. hoist), completely lower the impact hammer to the ground
until it is resting fully on the gibs. Remove the 89-inch lifting sling from the
headache ball of the pile line (aux. hoist).
aa.
Remove the trip safety lever cord from the hole on the trip safety lever and place in
the tool box.
ab.
Install the red intake/exhaust port weather cap, piston transport pin, and the catch
ring weather cap with the securing strap.
ac.
Connect the 96-inch lifting sling to the lower cylinder lifting lug with a shackle.
Leave the 89-inch lifting sling connected to the upper cylinder lifting lug with a
shackle. Using the pile line (aux. hoist), hoist and place the impact hammer in
front of the lead tower, parallel to the front outriggers as shown on Figure H-12.
Leave both lifting slings in place until the impact hammer is loaded into the
shipping/storage container.
Spotter Removal
WARNING
This procedure presents several opportunities for pinching body
parts between moving parts.
WARNING
Never stand directly under the suspended lead tower.
WARNING
Be sure that the crane operator can see all ground personnel
including those on the crane. Ground personnel on the carrier
deck must always position themselves to prevent obstructing the
crane operator's view.
Perform the following procedure to remove the spotter from the crane with a 45-foot (13.7 m)
three-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.
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.
Change 1 H-81
