COUPLING 2447227 - Caterpillar

Opening pressure of relief valve ... 2500 25 psi(175.8 1.8 kg/cm2)(1) Torque for plug ... 80 5 lb. ft.(11.1 0.7 mkg)(2) Thickness of one 2J2866 Shim ... .005 in.(0.13 mm) One shim will change pressure ... 35 psi(2.46 kg/cm2)(3) Thickness of one 3J7470 Shim ... .048 in.(1.22 mm) One shim will change pressure ... 400 psi(28.12 kg/cm2)(4) 2J6089 Spring for pilot valve: Length under test force ... 1.43 in.(36.3 mm)Test force ... 64 to 70 lbs.(29.0 to 31.7 kg)Free length after test ... 1.74 in.(44.2 mm)Outside diameter ... .49 in.(12.4 mm)(5) 5J4664 Spring for dump valve: Length under test force ... 1.14 in.(29.0 mm)Test force ... 7.7 to 9.5 lbs.(3.5 to 4.3 kg)Free length after test ... 1.43 in.(36.3 mm)Outside diameter ... .500 .016 in.(12.7 0.41 mm)(6) Torque for bolts (two) ... 60 2 lb. ft.(8.3 0.3 mkg) (Mounting to main body)