621H Wheel Tractor-Scraper Caterpillar


Equipment Lowering with Engine Stopped

Usage:

621H EAZ

------ WARNING! ------

Be sure all personnel are clear of equipment while equipment is being lowered.

Failure to stay clear may result in personal injury.


Note: The implement controls must have electrical power in order to move the implements.

Lowering The Equipment With Electrical Power



Illustration 1g02725487

When the electrical system is operating properly, use joystick (2) to lower the implements. The parking brake must be disengaged. Lower the implements within 10 minutes of shutting the engine down. The joystick is located on the right side of the operator compartment. Engine start switch (1), which is located on the front dash, must be turned to the ON position. Push the joystick forward in order to lower the scraper bowl. Move the thumb lever to the left in order to lower the apron. When the implements have been lowered to the ground, turn the engine start switch to the OFF position.

Lowering The Equipment Without Electrical Power



Illustration 2g02138192

If the electrical system has malfunctioned or if the electrical system has failed, use shutoff valve (3) to lower the implements. The parking brake must be disengaged. Lower the implements within 10 minutes of shutting the engine down. The valve is located on the top of the tractor transmission. The valve must be opened in order to lower the bowl and the apron to the ground. Turn the head of the valve clockwise in order to open the valve. Use a wrench or pliers in order to turn the head of the valve. When the implements have been lowered to the ground, turn the head of the valve counterclockwise in order to close the valve.

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