Lull 644E-42 Operation Manual - Manual (Page 76)

74 Model 644E Origin 3/04
Operation
Understanding the Stabil-TRAKô System
The following describes the three basic modes of the patented
Stabil-TRAK system. The vehicle may operate in any one of
these three modes.
Free Pivot Mode
With the boom below 40 (1), the Stabil-TRAK system is in the FREE PIVOT MODE
(2) and the rear axle is allowed to pivot freely. The frame sway control will function
normally. Both Stabil-TRAK lights on the front dash panel will be OFF (3).
Stabil-TRAK System
OS1970
0000000
RPM X 100
5
10
15
30
20
25
F
1/2
E 104
176
80
248
120 °C
°F
D
r/min
OU0100
2
3
1