JLG M4069 Operator Manual - Manual (Page 29)

SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION AND INSPECTION
3121220 – JLG Lift – 2-7
2.4 OSCILLATING AXLE LOCKOUT TEST (IF EQUIPPED)
NOTICE
LOCKOUT SYSTEM TEST MUST BE PERFORMED QUARTERLY, ANY TIME A SYS-
TEM COMPONENT IS REPLACED, OR WHEN IMPROPER SYSTEM OPERATION IS
SUSPECTED.
NOTE: Ensure platform is fully lowered prior to beginning lockout
cylinder test.
1. Place a 6 inch (15.2 cm) high block with ascension
ramp in front of left rear wheel.
2. From platform control station, select LOW drive speed.
3. Place DRIVE control switch to FORWARD position and
carefully drive the machine up ascension ramp until
left rear wheel is on top of block.
4. Raise machine platform approximately 7 ft (2.1 m) on
the 3369LE or 9 ft (2.7 m) on the 4069LE.
5. Place DRIVE control switch to REVERSE position and
carefully drive the machine off the block and ramp.
6. Have an assistant check to see that the left rear wheel
remains locked in position off the ground.
7. Lower the machine platform; the lockout cylinder
should then release and allow wheel to rest on the
ground. It may be necessary to activate DRIVE to
release cylinders.
8. Place the 6 inch (15.2 cm) high block with ascension
ramp in front of right rear wheel.
9. From platform control station, select LOW drive speed.
10. Place DRIVE control switch to FORWARD position and
carefully drive the machine up ascension ramp until
right rear wheel is on top of block.
11. Raise machine platform approximately 7 ft (2.1 m) on
the 3369LE or 9 ft (2.7 m) on the 4069LE.
12. Place DRIVE control switch to REVERSE position and
carefully drive the machine off the block and ramp.
13. Have an assistant check to see that the right rear
wheel remains locked in position off the ground.
14. Lower the machine platform; the lockout cylinder
should then release and allow wheel to rest on the
ground. It may be necessary to activate DRIVE to
release cylinders.
15. If the lockout cylinders do not function properly, have
qualified personnel correct the malfunction prior to
any further operation.