RETAINER-BOOT 9R1955 - Caterpillar

Introduction
When the main pumps have been serviced or the hydraulic oil has been replaced, air will need to be removed. Use the following procedure to remove air from the hydraulic system:Machine Preparation
Clear all personnel from the machine and from the area around the machine.
To avoid system damage, make sure that the hydraulic pump is properly filled with hydraulic oil before start-up.
Start the engine.
Illustration 1 g02449876
Engine speed dial
Set the engine speed dial at "10".
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.
Fully extend the bucket cylinder and place the bucket on the ground.
Engage the swing lock pin.
Stop the engine.
Release the pressure in the hydraulic system.Note: Refer to Testing and Adjusting, "System Pressure - Release".
Raise the left console.Adjustment Procedure
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Right side view of main hydraulic pump (1) Main pump case drain hose
Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Disconnect hose (1) .
Fill the main pumps with oil.
Reconnect main pump case drain hose (1) and tighten to the specified torque.
To avoid system damage, make sure that the hydraulic pump is properly filled with hydraulic oil before start-up.
Start the engine.
Illustration 3 g02452604
Engine speed dial
Set the engine speed dial at "1".
Lower the left console.
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.
Raise the boom and hold the boom in this position.
Stop the engine and slowly lower the boom until the work tool is on the ground. This step pressurizes the hydraulic tank.
Slowly loosen main pump case drain hose (1) until oil begins to flow around the hose connection.
Tighten hose (1) to the specified torque.