JLG RT3394 Operation & Safety Manual page 34

User Responsibilities, Machine Preparation, and Inspection
2.6.1 Left Side Wheel Test
1. Place a 4 in (10.16 cm) high block with ascension ramp in front of left wheel of the
oscillating axle.
2. From platform control station, select low drive speed.
3. Set the drive control switch into position and carefully drive the machine up
ascension ramp until left oscillating axle wheel is on top of block.
4. Verify the axle oscillates to maintain contact with the ground/ramp. (All four
wheels on the ground).
5. Raise machine platform above stowed position to drive cutout height.
6. Carefully drive the machine back off the block and ramp.
7. Have an assistant check to see that the left oscillating axle wheel that was on the
block is in position on the ground. The axle should oscillate so that all four wheels
maintain contact with the ground.
8. In the current position (platform raised and all four on flat and level surface),
carefully drive machine up the ramp block again.
9. Have an assistant check to verify that the axle did not oscillate and remained
locked (one wheel is off of the ground).
10. Carefully drive the machine back off the block and ramp.
11. Lower the machine platform; the lockout cylinder should then release and allow
the axle to oscillate. It may be necessary to activate drive to release cylinders.
12. If the lockout cylinders do not function properly, have qualified personnel correct
the malfunction prior to any further operation.
2.6.2 Right Side Wheel Test
1. Place a 4 in (10.16 cm) high block with ascension ramp in front of right wheel of
the oscillating axle.
2. From platform control station, select LOW drive speed.
3. Set the drive control switch into position and carefully drive the machine up
ascension ramp until right oscillating axle wheel is on top of block.
4. Verify the axle oscillates to maintain contact with the ground/ ramp. (All four
wheels on the ground).
5. Raise machine platform above stowed position to drive cutout height.
6. Carefully drive the machine back off the block and ramp.
7. Have an assistant check to see that the right oscillating axle wheel that was on the
block is in position on the ground. The axle should oscillate so that all four wheels
maintain contact with the ground.
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31221544 RT3394, RT4394