TUBE AS 4994523 - Caterpillar

The machine has different capacities when operating on tires compared with operating on outriggers. Also, the machine capacities for each type of attachment are different.
Machine instability can result in injury or death. To ensure stability during operation the following conditions must be observed:1. Tires must be correctly inflated and have the correct amount of ballast (if equipped).2. The machine frame must be level.3. The frame level switch must never be operated when the boom is raised.4. The frame level switch must never be operated when outriggers are lowered.5. Outrigger switches must never be operated when the boom is raised.6. The correct load chart for the machine as equipped must be referenced and the weights and load centers specified must never be exceeded.7. The machine must never be moved when the boom is raised.
The load charts are located on the dashpanel, ensure the correct load chart is used. Symbols at the top of the chart show the type of attachment for which the chart is intended, and whether for operation on tires or on outriggers. The load charts may be in metric units (meters and kilogrammes) or conventional units (feet and pounds).When operating on tires, the weight of the intended load determines the maximum height above ground and the maximum distance between the load center of gravity and the front wheels.When operating with outriggers lowered, the weight of the intended load determines the maximum height above ground and the maximum distance between the load center of gravity and the outrigger pads. The machine boom has two reference scales with must be used with the load chart to assess the lift. The boom extension reference scale (1) gives an indication of boom length. The letters "B", "C" and "D" correspond to the same letters on the load chart. The letter "A" on the load chart corresponds to the fully retracted position of the boom. The letter "E" on the load chart corresponds to the fully extended position of the boom.The boom angle reference scale (2) gives an indication of the angle of the boom. Assess the intended load as follows:1. Carefully move the machine into position ready to make the lift. The machine should be as close as possible to the intended load. Refer to the topic "Operating Techniques".2. Raise and extend the boom as required until the attachment is in position ready to make the lift. DO NOT MAKE THE LIFT.3. Look at the boom extension reference scale and the boom angle reference scale and note the readings. Refer to the load chart and use these two values to locate the equivalent load zone.4. If the intended load is EQUAL TO, OR LESS THAN the value in the equivalent load zone the lift can be attempted with caution.5. If the intended load is HEAVIER THAN the value in the equivalent load zone the lift cannot be made. EXAMPLES: In the examples that follow, the numbers are from the load chart opposite.This load chart is for illustrative purposes only and