Manitowoc Grove RT9150E - Page 195

3-121
RT9150E OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES
3
Published 2-23-2017, Control # 644-00
Grove
1. Press the button (1).
2. The lifting cylinders (2) turn:
Yellow: Intermediate position
Green: Locked
To rotate lifting cylinders to unlocked (Figure 3-118):
1. Press the button (1).
2. The lifting cylinders (2) turn:
Yellow: Intermediate position
Red: Unlocked.
Locking/Unlocking the Counterweight
The counterweight is secured to the crane with a pair of
horizontal locking cylinders. After the counterweight has
been pretensioned the locking cylinders need to engage the
counterweight to secure it to the crane.
Locking the Counterweight
After pretensioning the counterweight:
1. Press the engage button (1) (Figure 3-119). When the
lock cylinders are fully engaged the lock cylinders icon
(2) turns green.
Unlocking the Counterweight
In order to remove the counterweight the locking cylinders
must be retracted:
1. Press the retract button (3) (Figure 3-119). When the
lock cylinders are fully retracted the lock cylinders icon
(2) turns red.
FIGURE 3-118
FIGURE 3-119
1
3
2
Reference Only