Haulotte HT23RTJ O, Maintenance Book

Page: 402 / 534

402 4001055250 E 10.21 USA / GB
Chassis
Front axle locking function check
MP0008
5 - Procedure
The front axles will oscillate when the boom is in transport
position (i.e. when the boom is less than 15° above horizontal
and not extended beyond 30cm (12in) on the machine and drive
is selected.
Ensure the axles are extended and the boom is fully retracted,
lowered, and centered betweeen the rear wheels prior to
beginning lockout cylinder test :
• Place a ramp 15 cm (6 in) high in front of the front right wheel.
• From platform control box, start engine.
• Place the drive control lever to the forward position and carefully drive
machine up ascension ramp until left front wheels is on top of block.
• Carefully extend the boom just enough to get it out of the transport
position.
• With boom in this position, place drive control lever to reverse and
carefully drive machine off of block and ramp.
• Have an assistant check to see that left front or right rear wheel remains
elevated in position off of the ground.
• Carefully return the boom to the transport position. When boom reaches
the transport position, carefully activate drive to release cylinders. To
lockout cylinders should release and allow the wheel to rest on ground.
This operation must be realized with extremes precautions by standing
strongly on the platform by the contact with the ground.