BOARD 3N7539 - Caterpillar

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Make sure that transmission control (2) is in the Parking Brake Applied (P) position (1). Refer to Operation and Maintenance Manual, "Changing Direction and Speed" for more information.Note: When the transmission control is in the P position, the parking brakes are automatically engaged and the transmission is not in any gear (Neutral).
Move the hoist control to the FLOAT position to lower the dump body. Refer to Operation and Maintenance Manual, "Operator Controls" for more information.Note: If equipped, verify that the rear cab access walkway handrail, fall protection rails, and folding walkways are in the stored position before lowering the body.
Install wheel chocks on the machine. Refer to Operation and Maintenance Manual, "Use of Wheel Chocks" for more information.
When wheel chocks cannot be used, ensure that the machine is unable to roll by turning the wheels into a suitable bank or placing with the wheels in a suitable ditch.
Ensure that the pressure is released from any closed system that will be opened during the maintenance procedure. Refer to Operation and Maintenance Manual, "System Pressure Release" for more information.Note: The Advisor display can be used to verify the amount of pressure in each system.
For maintenance that requires the dump body to be in the raised position, install the truck body retaining cables. Refer to Operation and Maintenance Manual, "Cable (Truck Body Retaining)" for more information.
This machine is equipped with lockout controls to suit the following types of machine maintenance:
Maintenance that requires the engine to be running
Maintenance that DOES NOT require the engine to be running
Maintenance that requires the electrical system to be disabled
For maintenance that requires the engine to be running, perform the following:
Personal injury or death can occur if personnel are trapped between the wheel and the frame.The steering system is hydraulically controlled and wheels can crush personnel during movement.Use caution when working between the wheels and the frame. If the wheels must be turned, ensure that all personnel are clear of the machine before any movement.
Run the engine at an idle.
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Activate machine lockout control (5). Refer to Operation and Maintenance Manual, "Machine Lockout Control" for more information.
For maintenance that DOES NOT require the engine to be running, perform the following:
Move the engine start switch to the OFF position. Refer to Operation and Maintenance Manual, "Operator Controls" for more information.
Activate engine lockout control (4). Refer to Operation and Maintenance Manual, "Engine Lockout Control" for more information.
For maintenance that requires the electrical system to be disabled, perform the following:
Move the engine start switch to the OFF position. Refer to Operation and Maintenance Manual, "Operator Controls" for more information.
Move battery disconnect switch (3) to the OFF position. Refer to Operation and Maintenance Manual, "Battery Disconnect Switch" for the proper procedure.
For maintenance that requires access to the rear of the cab:For machines that are equipped with a folding rear handrail.
Lower the folding handrail before lowering the body.Lowering the body with the handrail in the raised position will result in damage to the machine.
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Access and remove pins (7) and (8)