Lull 644E-42 Operation Manual - Manual (Page 80)

78 Model 644E Origin 3/04
Operation
Stabil-TRAK System Test Procedures
Step 1
a. Place the vehicle on a level surface with 0 sway.
b. Have the boom fully retracted and horizontal.
c. Place an 8" (203 mm) wood or cement block in front of
the front left tire.
d. Enter the vehicle.
e. Fasten the seat belt.
f. Turn the ignition switch to the RUN position.
g. Check to be sure the Stabil-TRAKô lock light and
the slow pivot light are both OFF.
Step 2
a. Turn the ignition switch and start the engine.
b. Turn the parking brake switch OFF.
c. Move the range select lever to (1) FIRST gear.
d. Move the travel select lever to the (F) FORWARD
position.
e. Drive the vehicle up on the block and stop the vehicle.
f. Use the frame sway control to level the vehicle back to 0 .
Step 3
a. Depress the service brake pedal.
b. Move the travel select lever to the (N) NEUTRAL
DETENT position.
c. Raise the boom to exactly 60 . The Stabil-TRAKô lock light
should come ON when the boom angle is at about 40
and remain ON. The Stabil-TRAKô slow pivot light should
be OFF.
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