GUARD ASSEMBLY 7U2273 - Caterpillar

When you operate the hammer, make sure that the hammer does not make contact with the host machine's boom or host machine's hydraulic lines.
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Preheat the hammer tool before you start to operate the hammer in extreme cold temperatures that are below -20 °C (-4 °F). Use a torch in order to heat the tool until the tool is at least 0 °C (32 °F). Do not heat the tool to a temperature that is greater than 100 °C (200 °F).
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Do not use the hammer as a floor sweeper. The host machine can be damaged.
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Note: Remove the lifting eye and replace the lifting eye with the bolt that is supplied before you use the hammer. Operating the hammer with the lifting eye in place can cause damage to the housing or to the hammer.
Do not use the hammer or the hammer tool for lifting. Use the lifting eyes for storage and for maintenance only.
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If the hammer is properly modified, the hammer can be used under water. Refer to Special Instruction, REHS1078, when you need to modify the hammer for underwater operation.
The hydraulic hammers can be equipped with an automatic lubrication system. The automatic lubrication system must be set to operate only when the hammer is active.Special Applications
The special applications in the list below may require the following items: modifications to the work tool, special operating techniques, increased maintenance and special wear items:
tunnelling
foundry cleaning
underwater operations
operation in extremely cold conditions or extremely hot conditions
use of special hydraulic fluids
other special conditionsConsult your Caterpillar dealer for information on the use of the hammer in special conditions.Noise Dampening
The operation of a hammer near areas that are sensitive to noise can cause noise pollution. Please follow these basic rules in order to avoid unnecessary noise:
Keep the tool at 90° to the material.
Keep the force of the feed in line with the tool.
Replace the parts or fix the parts that are worn out, damaged, or loosened.This will extend the life of the hammer. The noise level of the hammer will be reduced.Automatic Lubrication (If Equipped)
The automatic lubrication system provides grease to the hydraulic hammer. The flow of grease is controlled by a timer that is located in the pump assembly. The cycle of the pump is started when the hammer is activated.In order to verify proper operation of the automatic lubrication system, look for the collar of grease that is on the top part of the hammer tool. The collar of grease should be below the lower tool bushing. Lift the hammer off the ground and point the tool downward. The collar of the grease should be equal on both sides of the tool that move in and out of the bushing.If the collar of grease is not visible, you must verify that the pump assembly is operating. If the pump assembly is operating, adjust the cycle time of the timer. Refer to the maintenance section for the procedure to adjust the timer.Underwater Operation
Note: In order to use any hydraulic hammer