When the lead tower is clear of the impact hammer gibs, retract the spotter and
using the crane boom, lower the lead tower to within six inches (15 cm) of the
Do not lift the impact hammer with the hammer line (main hoist)
alone. This could seriously damage the hammer trip system. Use
a combination of the pile (aux. hoist) and hammer (main hoist)
lines when the impact hammer is not mounted on the lead tower.
Slowly hoist the impact hammer using a combination of the hammer (main hoist)
and pile (aux. hoist) lines. Then lift the impact hammer off of the ground and rotate
it so that its attachment gibs are facing towards the position or direction it is to be
Using a combination of the hammer (main hoist) and pile (aux. hoist) lines, slowly
lower the impact hammer and allow it to lean back towards the gibs. Continue
lowering until the impact hammer reaches approximately a 60-degree angle
relative to the ground. Maintain the hammer trip assembly in position at the middle
of the hammer trip track rails.
Remove the fuel tank plug/vent valve from the fuel tank, apply Kleen-Flo Tumbler
Industries (Stock #789) engine storage/fog oil spray or equivalent to the inside of
the fuel tank, and reinstall the fuel tank plug/vent valve. Close both fuel tank
plug/vent valves on the fuel tank.
Close the fuel pump feed and return shutoff valves (handle perpendicular to the
lines) located directly below the fuel tank.
Close the oil pump feed shutoff valve (handle perpendicular to the lines) located
directly below the lubricating oil tank.
Apply Kleen-Flo Tumbler Industries (Stock #789) engine storage/fog oil spray or
equivalent to the following: inside surfaces of the catch ring cap, exposed surfaces
of the hammer trip track rails, through the trip slot in the rear of the upper cylinder
and onto the exposed surface of the piston, hammer trip assembly, exposed face
of the striker plate, and any other exposed, unpainted metal surfaces (other than
Remove the tension on the hammer line (main hoist) by lowering and support the
impact hammer at the 60-degree angle with the pile line (aux. hoist).
Ensure that the crane operator is aware that removing the
hammer line (main hoist) will be performed while under a
suspended load (impact hammer).
Have the crane operator turn the CRANE FUNCTION POWER switch to the OFF
position to remove power from the crane functions controlled by the armrest
joysticks. This prevents accidental operation of the controlled crane functions
caused by bumping the joysticks.
Remove the pin from the wedge and socket of the hammer line (main hoist) and
remove it from the lifting lug on the hammer trip assembly. Temporarily attach a
weight to the hammer line (main hoist) wedge and socket to prevent slack in the
H-80 Change 1