Lull 644E-42 Operation Manual - Manual (Page 81)

Operation
79 Model 644E Origin 3/04
Step 4
a. Use your left foot to depress the service brake pedal.
b. Move the travel select lever to the (R) REVERSE position
and the range selector to the (2) SECOND gear position.
c. Ease your left foot partially off the service brake pedal,
just keeping the Stabil-TRAKô lock light ON
Approximately 3/4 pedal travel which will be 150 psi (10,3
bar) pressure in the brake valve.
d. With your right foot, increase the engine rpm slightly, as
necessary, to back the vehicle off the block. The
Stabil-TRAKô lock light should remain ON while backing
off the block, the front left tire should remain off the
ground. If the front left tire drops to the ground, repeat
steps 1 thru 4.
IMPORTANT: Perform Steps 5 thru 9 with the engine rpm at idle.
Step 5
a. Keep the service brake pedal depressed.
b. Move the travel select lever to the (N) NEUTRAL
DETENT position.
c. Take your foot off the service brake pedal. The
Stabil-TRAKô lock light should remain ON and the front
left tire should remain off the ground.
Step 6
a. With the travel select lever in the (N) NEUTRAL DETENT
position, engage the parking brake switch.
b. Move the travel select lever to the (F) FORWARD
position. DO NOT depress the service brake pedal. The
Stabil-TRAKô lock light should remain ON and the front
left tire should remain off the ground.
Stabil-TRAK System Test Procedures
LOCKE
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