Functional Check - JLG 400SJ Operation And Safety Manual

SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION

Functional Check

First, using the ground controls, check all functions con-
trolled by the ground controls. Next, using the platform
controls, check all functions controlled by the platform
controls.
1. Telescope boom IN and OUT several cycles at various
degrees of elevation lengths. Check for smooth tele-
scope operation.
2. Swing turntable to LEFT and RIGHT a minimum of 45
degrees. Check for smooth motion.
NOTE: Step 3 is only applicable for machines prior to S/N
0300140365.
3. Check the oscillating axle valve (if equipped) under the
turntable at the top front of frame. Observe that the
valve plunger is depressed when turntable is posi-
tioned forward, and centered. Swing the turntable until
bracket is past the valve. The plunger should be fully
extended.
NOTE: Step 4 is only applicable for machines prior to S/N
61718.
4. With the aid of an assistant to monitor the CHASSIS
OUT OF LEVEL indicator light on the platform control
2-6
console, manually activate the indicator light by com-
pressing any one of the three tilt indicator mounting
springs. If the light does not illuminate, shut down
machine and contact a qualified service technician
before continuing operation.
NOTE: Step 5 is applicable for machines built from S/N
61718 to present.
5. Check the chassis out of level indicator located on the
platform control console by driving, with the machine in
level position, up a suitable ramp of at least 5° slope.
Check the out of level indicator, with the machine on
the ramp. If the light does not illuminate, return the
machine to a level surface, shut down the machine, and
contact a qualified technician before resuming opera-
tion.
6. Check that platform self-leveling system functions prop-
erly during raising and lowering of boom.
7. Check rotator for smooth operation and assure plat-
form will rotate 90 degrees in both directions from cen-
terline of boom.
8. Drive forward and reverse; check for proper operation.
9. Check boom horizontal limit switches to see that they
are operable and not damaged. Raise and lower Boom.
Check for smooth operation.
– JLG Lift – 3121216