4 oscillating axle lockout test (if equipped), Oscillating axle lockout test (if equipped) -15, 4 oscillating axle lockout test – JLG 740AJ ANSI Operator Manual User Manual
Page 41
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
3121650
– JLG Lift –
2-15
2.4
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
drive wheels prior to beginning lockout cylinder test.
1.
Place a 6 inch (15.2 cm) high block with ascension ramp in
front of left front wheel.
2.
From platform control station, start engine.
3.
Position Drive Speed/Torque Select switch to Slow.
4.
Place Drive control lever to Forward position and carefully
drive machine up ascension ramp until left front wheel is on
top of block.
5.
Carefully activate Swing control lever and position boom
over Right side of machine.
6.
With boom over right side of machine, place Drive control
lever to Reverse and drive machine off of block and ramp.
7.
Have an assistant check to see that left front or right rear
wheel remains elevated in position off of ground.
8.
Carefully activate Swing control lever and return boom to
stowed position (centered between drive wheels). When
boom reaches center, stowed position, lockout cylinders
should release and allow wheel to rest on ground, it may be
necessary to activate Drive to release cylinders.
9.
Place the 6 inch (15.2 cm) high block with ascension ramp in
front of right front wheel.
10.
Place Drive control lever to Forward and carefully drive
machine up ascension ramp until right front wheel is on top
of block.
11.
Carefully activate Swing control lever and position boom
over left side of machine.
12.
With boom over left side of machine, place Drive control
lever to Reverse and drive machine off of block and ramp.
13.
Have an assistant check to see that right front or left rear
wheel remains elevated in position off of ground.
14.
Carefully activate Swing control lever and return boom to
stowed position (centered between drive wheels). When
boom reaches center, stowed position, lockout cylinders
should release and allow wheel to rest on ground, it may be
necessary to activate Drive to release cylinders.
15.
If lockout cylinders do not function properly, have qualified
personnel correct the malfunction prior to any further oper-
ation.