Oscillating Axle Lockout Test (If Equipped) - JLG 1250AJP Operation & Safety Manual

User Responsibilities, Machine Preparation, and Inspection
2.8

OSCILLATING AXLE LOCKOUT TEST (IF EQUIPPED)

The front axles will oscillate when the boom is in the transport position.
Lockout system test must be performed quarterly, any time a system component is
replaced, or when improper system operation is suspected.
Note: Ensure the axles are extended (if equipped) and the boom is fully retracted, low-
ered, and centered between the rear 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. 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 extend the boom just enough to get it out of the transport position.
5. With boom in this position, place Drive control lever to Reverse and carefully 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 the ground.
7. Carefully return the boom to the transport position. When boom reaches the
transport position, carefully activate Drive to release cylinders. The lockout
cylinders should release and allow the wheel to rest on ground.
8. Repeat the procedure for the right oscillation cylinder checking to see that the
right front or left rear wheel remains elevated in position off of the ground.
9. If lockout cylinders do not function properly, have qualified personnel correct the
malfunction prior to any further operation.
34
NOTICE
31222384 1250AJP