Oscillating Axle Lockout Test (If Equipped) - JLG 400S Operation Manual

2.3

OSCILLATING AXLE LOCKOUT TEST (IF EQUIPPED)

LOCKOUT SYSTEM TEST MUST BE PERFORMED QUARTERLY, ANY TIME A SYSTEM COM-
PONENT IS REPLACED, OR WHEN IMPROPER SYSTEM OPERATION IS SUSPECTED.
NOTE: Ensure boom is fully retracted, lowered, and centered between
rear wheels prior to beginning lockout cylinder test.
1. Place a 6 inches (15.2 cm) high block with ascension ramp in
front of left front wheel.
2. From platform control console, start engine.
3. Place the Drive control lever to the forward position and
carefully drive machine up ascension ramp until left front
wheel is on top of block.
4. Carefully activate Telescope or Main Boom Lift control and
take the boom out of the transport position.
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SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
– JLG Lift –
5. Place Drive control lever to Reverse and drive machine off of
block and ramp.
6. Have an assistant check to see that left front or right rear
wheel remains elevated in position off of ground.
7. Return boom to stowed position. When boom reaches cen-
ter, stowed position, lockout cylinders should release and
allow wheel to rest on ground, it may be necessary to acti-
vate Drive to release cylinders.
8. Place the 6 inches (15.2 cm) high block with ascension ramp
in front of right front wheel.
9. Place Drive control lever to Forward and carefully drive
machine up ascension ramp until right front wheel is on top
of block.
10. Repeat steps 4 thru 7 to check the opposite side of the oscil-
lating axle.
11. If lockout cylinders do not function properly, have qualified
personnel correct the malfunction prior to any further oper-
ation.
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