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.
Raise the spotter to the desired hole location using the pile line (aux. hoist).
Release the manual release on the spotter slide and the spotter slide pin will
engage the desired hole in the lead tower.
Impact Hammer Installation
The impact hammer, connected via four gibs (two on each side), travels vertically along rails on
the front of the lead tower.
Prior to hoisting the impact hammer, inspect the cable on both
crane hoist drums to ensure it is straight and undamaged.
Perform the following procedure to install the impact hammer on the lead tower:
Verify that the guide plate installed on the direct drive assembly of the impact
hammer is the correct size for the diameter of the piles to be driven. Install the
correct size guide plate if necessary. Refer to the "Guide Plate Installation"
Ensure the Load Moment Indicator (LMI) system on the crane is configured for
Rear Hoist, Outrigger Position 100%, and Two (2) Parts of Line.
If necessary, attach the 89-inch lifting sling with a 7/8-inch shackle to the upper
cylinder lifting lug on the impact hammer (center of upper cylinder) and attach the
96-inch lifting sling with a 7/8-inch shackle to the lower cylinder lifting lug (at top of
direct drive assembly). Using the pile line (aux. hoist), hoist and place the impact
hammer in front of the lead tower, parallel to the front outriggers. Disconnect the
96-inch lifting sling but leave the 89-inch lifting sling attached to the impact
Attach the headache ball of the pile line (aux. hoist) to the free end of the 89-inch
lifting sling. Using the pile line (aux. hoist), hoist and lift the top of the impact
hammer approximately four to five feet (1.2-1.5 m) off of the ground.
Remove the catch ring weather cap, the piston transport pin, the trip transport bolt,
and the intake/exhaust port weather cap and store them in the tool box. Refer to
The storage and transportation parts are red in color.
Open the two fuel tank plug/vent valves located on the top of the fuel tank and the
two fuel pump feed and return shutoff valves (handle parallel to the lines) located
Open the oil tank plug/vent valve located on the top of the lubricating oil tank and
the oil pump feed shutoff valve (handle parallel to the lines) located directly below
the lubricating oil tank. Also open the waste fuel drip tank vent valve located on
Attach the trip safety lever cord to the hole on the trip safety lever. Refer to Figure
H-48 Change 1