Lull 644E-42 Operation Manual - Manual (Page 41)

Operation
39 Model 644E Origin 3/04
Leveling The Vehicle
When placing a load while on a slope, use the frame sway control. Keep the vehicle
level. The operator should observe the frame level indicator (5) to assure that the
vehicle is level at all times. The frame sway is capable of tilting the vehicle 12 in
either direction.
Frame Level Indicator
The frame level indicator (5) is mounted on the top inside of the cab. It is a bubble
type indicator which allows the operator to tell if the vehicle has been positioned in a
level condition. Always frame sway the vehicle either right or left until the indicator
reads zero degrees (0 ). If zero cannot be achieved, then reposition the vehicle until
it is level before placing the load.
DANGER:
Use of the frame sway control with the boom raised
above horizontal can cause tipover resulting in death or serious personal
injury. Always use the frame sway control to level the vehicle before
raising the boom above horizontal. If the vehicle cannot be leveled using
the frame sway control, reposition the vehicle.
OS0232
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