Manitowoc GROVE RT890E Operator's Manual page 68

SET-UP AND INSTALLATION
Counterweight and Auxiliary Hoist
Removal
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. Remove any load and handling device from the auxiliary
hoist cable and retract all cable onto the hoist drum.
Secure the cable.
4. Disconnect the auxiliary hoist hydraulic lines and
electrical harness and secure. Do not disconnect the
counterweight removal cylinder hydraulic lines.
5. Remove the ball detent pins which secure the
counterweight mounting pins.
6. Ensure that the counterweight removal cylinder support
pins are securely attaching the counterweight to the
turntable wing-support brackets. Disengage the
counterweight mounting pins using the pinning control
lever (center).
NOTE: It may be necessary to retract the counterweight
removal cylinders to relieve weight from the
counterweight mounting pins.
7. Using the control levers (left and right), simultaneously
extend (lower) the counterweight onto the frame
counterweight supports. Feather individual controls as
required to lower the counterweight in a level position.
8. Remove the counterweight removal support pins from
turntable wing-support brackets and using the control
levers (left and right), retract the counterweight removal
cylinders fully.
9. Disconnect and secure the counterweight removal
cylinder hydraulic lines and replace the counterweight
removal cylinder support pins on the turntable wing-
support brackets.
10. Properly attach chains with clevis to the counterweight
lifting holes (see Figure 4-7) and use a crane to carefully
transfer the counterweight and auxiliary hoist to the
ground or a suitable transport vehicle.
Installation
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.
4-6
3. Properly attach chains with clevis to the counterweight
lifting holes (see Figure 4-7) and use a crane to carefully
transfer the counterweight and auxiliary hoist 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
counterweight removal cylinders, one at a time, guiding
them into the turntable wing/support brackets and 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
control 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.
10. Attach the auxiliary hoist hydraulic lines and electrical
harness.
Counterweight Without Auxiliary Hoist
Removal
1. Position the crane on a firm, level surface. Fully extend
and set the outriggers.
2. Position the superstructure over the front of the machine
and engage the turntable lock.
3. Remove the ball detente pins which secure the
counterweight mounting pins.
4. Ensure that the counterweight removal cylinder support
pins are securely attaching the counterweight to the
turntable wing/support brackets. Disengage the
counterweight mounting pins using the pinning control
lever (center).
NOTE: It may be necessary to retract the counterweight
removal cylinders to relieve weight from the
counterweight mounting pins.
RT890E