539 Knuckleboom Loader Hydraulic System Caterpillar


Relief Valve (Delimber and Stabilizer Load Sensing)

Usage:

539 1PZ



Illustration 1g00560036

Relief Valve (Delimber and Stabilizer Load Sensing)

Relief valve pressure setting ... 19300 kPa (2800 psi)

(1) 9T-1670 Spring

Assembled length under test force ... 34.7 mm (1.37 inch)
Load at assembled length ... 370 ± 30 N·m (272 ± 22 lb ft)
Free length after test ... 41.0 mm (1.60 inch)
Outside diameter ... 12.4 mm (.49 inch)

(2) Installation torque ... 60 ± 10 N·m (44 ± 7 lb ft)

(3) Valve torque ... 50 ± 10 N·m (37 ± 7 lb ft)

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