GAUGE-BRAKE WEAR-0% REMAINING 2170343 - Caterpillar

Line Relief Valve Exchange
Note: This procedure can be used to adjust the boom rod line relief (6) when the boom cannot be retracted fully. This procedure will use the BUCKET CLOSE circuit to adjust the line relief to proper specification.
Stop the engine.
Release the pressure in the hydraulic system. Refer to Testing and Adjusting, "System Pressure - Release".
Attach 311-1362 Vacuum Cap onto the hydraulic tank. Attach an air supply onto the assembly. Apply 276 - 414 kPa (40 - 60 psi). This procedure will pull a vacuum on the hydraulic system.
Remove the line relief valves for boom cylinder rod end (6) and bucket cylinder head end (7) in order to exchange the valve locations.
Install the line relief for the bucket cylinder head end (7) into the BOOM DOWN circuit.
Install the line relief for the boom cylinder rod end (6) into the BUCKET CLOSE circuit.
Start the engine.
Place the hydraulic activation control lever in the UNLOCKED position.
Place the machine controls at the following settings: engine speed dial "10" and AEC switch OFF. Refer to Testing and Adjusting, "Engine Performance - Test