Oscillating Axle Lockout Test; Basket Rotator Brake - JLG 40H Service And Maintenance Manual

SECTION 2 - PROCEDURES
10. With DRIVE CONTROLLER activated and engine at
idle, open all four bleeder screws (two on each lock-
out cylinder), one at a time, then close bleeder
screws when all air is dissipated (bled).
11. Using a suitable lifting equipment lift front of
machine and remove the 6 in. (15.2 cm) high block.
12. Transfer the 6 in. (15.2 cm) high block to the left front
wheel and repeat steps 2 thru 7, substituting the
word "right" for "left" in step 5.
13. Perform oscillating axle lockout test.

2.36 OSCILLATING AXLE LOCKOUT TEST.

LOCKOUT SYSTEM TEST MUST BE PERFORMED QUARTERLY,
ANY TIME A SYSTEM COMPONENT IS REPLACED, OR WHEN
IMPROPER SYSTEM OPERATION IS SUSPECTED.
NOTE: Ensure boom is fully retracted, lowered, and cen-
tered between drive wheels prior to beginning lock-
out cylinder test.
1. Place a 6 in. (15.2 cm) high block with ascension
ramp in front of left front wheel.
2. From platform control station, activate machine
hydraulic system.
3. Place HIGH ENGINE, DRIVE SPEED and WHEEL
MOTOR SPEED control switches to their respective
LOW positions.
4. Place DRIVE control lever to FORWARD position
and carefully drive machine up ascension ramp until
left front wheel is on top of block.
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5. Carefully activate SWING control lever and position
6. With boom over right side of machine, place DRIVE
7. Have an assistant check to see that left front wheel
8. Carefully activate SWING control lever and return
9. Place the 6 in. (15.2 cm) high block with ascension
10. Place DRIVE control lever to FORWARD and care-
11. Carefully activate SWING control lever and position
12. With boom over left side of machine, place DRIVE
13. Have an assistant check to see that right front wheel
14. Carefully activate SWING control lever and return
15. If lockout cylinders do not function properly, have
Figure 2-47. Basket Rotator Brake.
– JLG Lift –
boom over right side of machine.
control lever to REVERSE and drive machine off of
block and ramp.
remains locked in position off of ground.
boom to stowed position (centered between drive
wheels). After boom reaches stowed position, acti-
vate DRIVE and lockout cylinders should release
and allow wheel to rest on ground.
ramp in front of right front wheel.
fully drive machine up ascension ramp until right
front wheel is on top of block.
boom over left side of machine.
control lever to REVERSE and drive machine off of
block and ramp.
remains locked in position off of ground.
boom to stowed position (centered between drive
wheels). After boom reaches stowed position, acti-
vate DRIVE and lockout cylinders should release
and allow wheel to rest on ground.
qualified personnel correct the malfunction prior to
any further operation.
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