Cat TH220B and TH330B Telehandlers Operation & Maintenance Manual (1)

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65 Operation Section

Removal Note: Follow the same mounting and dismounting guidelines that are detailed in the installation section. 1. Install the engine start key. If equipped, install the battery disconnect switch key. Start the engine. Slowly raise the boom until boom plates (6) are clear of location tongue (5). Stop the engine. If equipped, remove the battery disconnect switch key. Remove the engine start switch key. 2. Remove retaining clip (3) and pin (2). Remove boom cylinder lock (1) from boom cylinder and place the lock on the flat area of the main frame. Descend from the machine.

If the machine is positioned too close to electric power lines, electric current will pass through the machine. This will cause injury or death by electrocution. Keep the machine at least 8 m (25 ft) away from electric power lines. Always check for power lines before raising the boom.

The instability of the machine could result in injury or death. In order to ensure the stability during operation, the following conditions must be observed. The tires must be inflated correctly and the tires must have the correct amount of ballast (if equipped). The machine must be level. The frame level switch must never be operated when the boom is raised. The frame level switch must never be operated when the stabilizers are lowered. The switches for the stabilizers must never be operated when the boom is raised.

Illustration 83 Typical example of storage bracket

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3. Stow boom cylinder lock onto the storage bracket that is mounted on the machine. The bracket can be mounted on the left side of the machine or on the right side of the machine. 4. Install the engine start key. If equipped, install the battery disconnect switch key. Start the engine and fully lower the boom.

Operation Information

Do not operate or work on this machine unless training has been accomplished and you have read and understand the instructions and warnings in the Operation and Maintenance Manuals. Failure to follow the instructions or heed the warnings could result in injury or death. Contact your Caterpillar dealer for replacement manuals. Proper care is your responsibility.

The correct load chart must be referenced for the work tool that is installed on the machine. The specified weights and load centers must never be exceeded. The machine must never be moved when the boom is raised above the carry position.

If equipped, use the frame leveling control in order to level the machine on uneven ground. Use the level indicator in order to verify that the frame is level. Level the frame before you lift a load. Never operate the frame leveling control when you have raised the boom. Always use the boom in order to engage the load with the work tool. Do not move the machine in order to engage the load with the work tool. Always use the boom in order to position the load with the work tool. Do not move the machine in order to place the load with the work tool. Always use the boom in order to disengage the load from the work tool. Do not move the machine in order to disengage the load from the work tool. Operate the boom smoothly in order to avoid damaging or dislodging the load. Do not move the machine while the boom is raised or while the boom is extended. If it is necessary to reposition the machine, lower and retract the boom first. The transmission neutralizer switch operates in conjunction with the service brake. The switch must be in the OFF position when you travel on the roadways. Do not use the machine for lifting loads in tandem with other machines. The combined load weight and force of the other machine can exceed machine capacity. This could cause the machine to turn over.


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