CLAMP 2500763 - Caterpillar

Specifications
Table 1
Steering Low Pressure Standby Pressure    
20000 500 kPa (2901 73 psi)    Introduction
The following test procedure will verify whether the pressure setting for the steering pump low-pressure standby is within the specified limit.Required Tools
Illustration 1 g02571852
Tooling (A) 198-4240 Digital Pressure Indicator Gp
Table 2
Required Tools    
Tool    Item    Qty    Part No    Description    
A         198-4240     Digital Pressure Indicator Gp    
    A1     1     198-4234     Digital Indicator    
A2 1     198-4237     Pressure Sensor Gp
(0 to 3,445 kPa (0 to 500 psi))    
A3 1     198-4236     Adapter Cable As    Machine Preparation
Move the machine to a smooth, horizontal location that is away from operating machines and away from personnel.
Place the transmission direction in the NEUTRAL position.
Engage the parking brake.
Lower the bucket or the work tool to the ground.
Stop the engine.
To release any steering system pressure, turn the steering wheel to the left and to the right.ReferenceFor more information about relieving the hydraulic pressure, refer to the Service Manual module Testing and Adjusting, "System Pressure - Release" for the machine that is being serviced.ReferenceFor more information about preparing the machine for Testing and Adjusting, refer to the Service Manual module Testing and Adjusting, "Machine Preparation for Testing and Adjusting" for the machine that is being serviced.Test Procedure
Permit only one operator on the machine. Keep all other personnel away from the machine or in sight of the operator.
Be sure to relieve the pressure in the hydraulic system.
Illustration 2 g03614361
The HMU is located behind the service cover under the front of the machine cab.
Attach tooling (A) to the steering pump discharge test port on the HMU.
Start the engine.
Run the engine at HIGH idle and record the pressure indicated on tooling (A) . Do not move the steering wheel during this test. Refer to table 1 for the correct pressure.Do not adjust the steering piston pump because of the result of this test. If the results are not acceptable, then perform the test for the pump high-pressure stall on the steering pump. If the pressure is correct, remove the tooling. Place the cap on HMU pressure tap.