BUSHING 2427073 - Caterpillar

Introduction
The performance level of the cylinder, the cylinder seals, and the overload relief valves for the implements can be determined with the following procedure.The engine speed and/or the machine configuration that is used during this test can affect the results of this test. Refer to Testing and Adjusting, "Engine Performance - Test (Engine Speed)" for the engine speed that was used for this test. Refer to Testing and Adjusting, "Operational Checks" for the machine configurations that were used for this test.The relief valve pressure settings must be set to the relief valve pressure specification before performing this operational check. Refer to Testing and Adjusting, "Specifications".Required Tools
Table 3
Required Tools
Part Number Part Description Qty
- Tape Measure 1
- Stopwatch 1 Machine Preparation
Clear all personnel from the machine and from the area around the machine.
Start the engine.
Illustration 1 g02449876
Engine speed dial
Set the engine speed dial at "10".
Lower the left console.
Position the machine on level ground. Check the visibility and adjust the mirrors for the best vision close to the machine.
Fully depress the service brake pedal until the service brake pedal locks mechanically.
Lower the stabilizers and the blade tip.
Illustration 2 g02418817
Parking brake button on the soft panel switch
Push down on the parking brake button to activate the parking brake.Note: The indicator light will be illuminated when the parking brake control is activated.
Increase the hydraulic oil temperature to 46° to 60° C (115° to 140° F).Test Procedures
Personal injury or death can result from sudden machine movement.Sudden movement of the machine can cause injury to persons on or near the machine.To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine.
Note: The following test procedures apply to most machine configurations. Refer to each of the following procedure to identify the correct procedure that should be done for the machine that is being tested.Test (Boom Cylinders)
The following procedure applies to all machines.
One piece boom
Stub boom cylinder
Fore boom cylinder
Illustration 3 g03723034
Typical Example
Fully extend the boom cylinders.
Fully extend the stub boom and the fore boom, if equipped.Note: Step 2 is for machines that are equipped with VA boom. Disregard Step 2 for all other applications.
Fully retract the stick cylinder.
Fully retract the bucket