Grove Published 11-10-2014, Control # 524-00 5-13
RT880E SERVICE MANUAL HOISTS AND COUNTERWEIGHT
4. Ensure that the counterweight removal cylinder support
pins are securely attaching the counterweight to the
turntable wing/support brackets. Disengage the counter-
weight mounting pins using the pinning control lever
(center).
5. Using the control levers (left and right), simultaneously
extend (lower) the counterweight onto the frame coun-
terweight supports. Feather individual controls as
required to lower the counterweight in a level position.
6. Remove the counterweight removal cylinder support
pins from turntable wing/support brackets and using the
control levers (left and right), fully retract the counter-
weight removal cylinders.
7. Disconnect and secure the counterweight removal cylin-
der hydraulic lines and replace the counterweight
removal cylinder support pins on the turntable wing/sup-
port brackets.
8. Properly attach the slings to the counterweight lifting
holes and use a crane to carefully transfer the counter-
weight to the ground or a suitable transport vehicle.
Installation of Counterweight Without
Auxiliary Hoist
1. Position the crane on a firm, level surface. Fully extend
and set the outriggers. Level the crane.
2. Position the superstructure over the front of the machine
and engage the turntable lock.
3. Properly attach the slings to the counterweight lifting
holes and use a crane to carefully transfer the counter-
weight to the frame counterweight supports over the rear
outrigger box.
4. Attach the counterweight removal cylinder hydraulic
lines.
5. Using the control levers (left and right), extend the coun-
terweight removal cylinders, one at a time, guiding them
into the turntable wing/support brackets. Pin securely.
6. Using the control levers (left and right) simultaneously
retract (raise) the counterweight removal cylinders until
the counterweight round bar engages the lugs on the
turntable and the counterweight pinning holes are
aligned with the counterweight mounting pins. Feather
individual controls as required to raise the counterweight
in a level position.
7. Engage the counterweight mounting pins using the con-
trol lever (center).
8. Attach the ball detent pins securing the counterweight
mounting pins.
9. Relieve pressure on the counterweight removal cylinder
so that weight is fully supported by the counterweight
mounting pins.
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