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Crush Hazard! Stay back a safe distance from the powered stairway when it is being raised or lowered. Failure to stay back may result in injury or death. |
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Make sure that the area is free of obstacles before raising or lowering the powered stairway. Forward or reverse machine travel with the powered stairway lowered could result in contact with the ground or an obstacle resulting in damage to the powered stairway. |
The powered stairway is a set of electrohydraulic controlled retractable steps that can be lowered close to the ground level for mounting and dismounting the machine.
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| Illustration 1 | g06334832 |
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(1) Manual lowering control
(2) Control switch (3) Latch release control (4) Latch release control (5) Control switch (6) Manual lowering control | |
The powered stairway can be raised or lowered under normal conditions with one of two different control switches. Control switch (5) is on the side of the powered stairway, near the bumper. Control switch (2) is on the front handrail of the stairway platform.
The Battery disconnect switch must be in the ON position and the shift control must be in the P (parking brake applied) position to operate the powered stairway control switches.
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Powered Stairway Lower - To lower the powered stairway with one of the control switches, perform the following steps: |
- Verify that the area around the powered stairway is clear of people and obstacles before lowering the powered stairway.
- Hold control switch (2) or control switch (5) in the lower position to lower the powered stairway. Release the switch to stop the powered stairway from moving.
Note: When one of the control switches is used to move the powered stairway, an audible alarm will sound while the powered stairway is in motion.
Note: If the stairway latch does not automatically release, raise the stairway to the upper stop, then use latch release control (3) or (4) to release the latch.
- Always place the powered stairway in the fully lowered position before mounting and dismounting the machine.
- Verify that the area around the powered stairway is clear of people and obstacles before lowering the powered stairway.
- Pull manual lowering control (2) or (5).
- If the stairway latch does not release, pull the stairway to the upper stop, then use latch release control (3) or (4) to release the latch.
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Illustration 2 g06337410 - After power is restored to the stairway, reset the manual control valve by pulling lever (7) to the down position.
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Powered Stairway Raise - To raise the powered stairway with one of the control switches, perform the following steps: |
- Verify that the area around the powered stairway is clear of people and obstacles before raising the powered stairway.
- Hold control switch (2) or control switch (5) in the raise position to raise the powered stairway. Release the switch to stop the powered stairway from moving.
Note: An audible alarm will sound while the powered stairway is in motion.
- Always place the powered stairway in the fully raised position before operating the machine.
Note: If the engine is running and the parking brake is released without the powered stairway in the fully raised position, a warning category 2S will activate. If a warning occurs, take the following action:
- Safely stop the machine.
- Apply the parking brake.
- Investigate the problem.
Refer to Operation and Maintenance Manual, "Monitoring System" for more information on the conditions that will occur during each warning category.