Manitowoc 777 - Page 93

Reference Only
Manitowoc Published 10-01-12, Control # 044-05 v2 3-35
777 OPERATOR’S MANUAL OPERATING CONTROLS AND PROCEDURES
3
are to the front, the crane will travel in the direction
opposite of handle movement.
7. To TRAVEL STRAIGHT (Figure 3-17), move both
crawler handles/pedals same amount in desired
direction from off.
8. To make a SHARP LEFT TURN (Figure 3-18), move
right crawler handle/pedal to front from off and leave left
crawler handle/pedal in off; crane will pivot about left
crawler.
9. To make a SHARP RIGHT TURN, reverse step 8.
10. To make a GRADUAL LEFT TURN (Figure 3-19), move
both crawler handles/pedals to front from off, but move
right crawler handle/pedal farther to front than left
crawler handle/pedal; right crawler will turn faster than
left crawler.
11. To make a GRADUAL RIGHT TURN, reverse step 10.
12. To COUNTER-ROTATE LEFT (Figure 3-20), move right
crawler handle/pedal to front from off and move left
crawler handle/pedal to rear from off.
13. To COUNTER-ROTATE RIGHT, reverse step 12.
14. Slowly move both crawler handles/pedals to off to stop
traveling and to hold crane in position.
15. Turn on travel park.
FIGURE 3-17
A968
Forward
Left
Crawler
Handle
Right
Crawler
Handle
Reverse
Reverse
Forward
Left
Crawler
Pedal
Right
Crawler
Pedal
OFF OFF
FIGURE 3-18
Forward
Left
Crawler
Handle
Right
Crawler
Handle
Forward
Left
Crawler
Pedal
Right
Crawler
Pedal
A968
OFF OFF
FIGURE 3-19
Forward
Left
Crawler
Handle
Right
Crawler
Handle
Forward
Left
Crawler
Pedal
Right
Crawler
Pedal
A968
OFF OFF
FIGURE 3-20
Forward
Left
Crawler
Handle
Right
Crawler
Handle
Reverse
Reverse
Forward
Left
Crawler
Pedal
Right
Crawler
Pedal
A968
OFF OFF