ADAPTER 4381431 - Caterpillar

Introduction
When the travel valve has been serviced or the hydraulic oil has been replaced, air will need to be removed. Use the following procedure to remove air from the travel valve.Required Tools
Table 2
Required Tool
Item Description Qty
F Transparent tube
6.4 mm (0.25 inch) in diameter 1
Suitable containers 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, the blade tip, and/or the implement to raise the front axle and the rear axle. This condition will allow the wheels to turn freely.Note: All tires must be fully off the ground.
Fully extend the bucket cylinder and place the bucket on the ground.
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.
Stop the engine.
Release the pressure in the hydraulic system.Note: Refer to Testing and Adjusting, "System Pressure - Release".
Raise the left console.
Illustration 3 g03730478
Rod end of travel valve (typical example)
(1) Purge fitting
Remove rubber cap from purge fitting (1).
Install transparent tube (F) on purge fitting (1).
Place the end of transparent tube (F) in a suitable container.
Start the engine.
Illustration 4 g02452604
Engine speed dial
Set the engine speed dial at "1".
Lower the left console.
Illustration 5 g02453444
Transmission control button on the soft panel switch
Push down on the transmission control button to select FIRST GEAR.Note: The first indicator light will illuminate when the transmission is in FIRST GEAR.
Illustration 6 g02453447
Creeper speed control button on the soft panel switch
Push down on the creeper speed control button to activate the creeper speed control.Note: The indicator light will be illuminated when the creeper speed control is activated.Adjustment Procedure
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 attachments have been lowered, 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.
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.
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