BEARING AS-SPECIAL 2405920 - Caterpillar

Specification
Table 1
"Relief Valve (Steering) - Test"
Date: Machine Serial Number:
Machine Settings Engine Speed
Speed dial "10"
AESC switch OFF
Item Specification Actual
Steering Relief Pressure 20,000 1,000 kPa (2,901 145 psi) Introduction
This procedure is utilized to verify that the steering relief valves are functioning properly within specifications.Required Tools
Illustration 1 g01623868
Tooling (B)
198-4240 Digital Pressure Indicator Gp
Table 2
Required Tools
Tool Item Qty Part Number Description
B 198-4240 Digital Pressure Indicator Gp
B1 1 198-4234 Indicator
B2 1 198-4238 Pressure Sensor
34,450 kPa (5,000 psi)
B3 1 198-4236 Extension Cable Machine Preparation
Clear all personnel from the machine and from the area around the machine.
Start the engine.
Illustration 2 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.
Increase the hydraulic oil temperature to 46° to 60° C (115° to 140° F).
Lower the stabilizers and the blade tip.
Fully extend the bucket cylinder and place the bucket on the ground.
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 g03857979
Medium pressure tap (steering, auxiliary tool, brake, and pilot pump pressure) is located behind the front left access door
Attach tooling (B2) 34,450 kPa (5,000 psi) pressure sensor to the medium pressure tap. Test Procedure
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.
Start the engine.
Set the engine speed dial at "10".
Turn the steering wheel counterclockwise until the steering wheel stops.
Hold the steering wheel against the stop and check the pressure at the medium pressure tap. Refer to Table 1 for the correct pressure.
Turn the steering wheel clockwise until the steering wheel stops.
Hold the steering wheel against the stop and check the pressure at the medium pressure tap. Refer to Table 1 for the correct pressure.