789B Off-Highway Truck Air System and Brakes Caterpillar


Relief Valve (Rear Brake Oil Cooler)

Usage:

789B 7EK



Illustration 1g00289602

Test information:

Pressure setting ... 690 ± 20 kPa (100 ± 3 psi)
Flow rate ... 38 ± 4 L/min (10 ± 1 US gpm)

(1) 6J-3380 Spring

Length under test force ... 60.4 mm (2.38 inch)
Test force ... 655 ± 52 N (147.0 ± 11.6 lb)
Free length after test ... 86.6 mm (3.41 inch)
Outside diameter ... 34.95 mm (1.376 inch)

(2) 8B-4624 Shim

Thickness ... 0.81 mm (0.032 inch)
Pressure change with one shim ... 24 kPa (3.5 psi)

Installation torque for the relief valve ... 160 ± 30 N·m (118 ± 22 lb ft)

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