CASE 8P7837 - Caterpillar

Opening pressure of relief valve ... 2700 50 psi(189.8 3.5 kg/cm2)Cutout pressure of charging valve ... 1725 50 psi(121 3.5 kg/cm2)(1) Torque for plug ... 13 2 lb. ft.(1.8 0.3 mkg)(2) Use 5J835 Shim to adjust difference between cutout to cut-in pressure of ... 500 75 psi(38.6 5.3 kg/cm2)(3) S1850 Spring: Length under test force ... 2.06 in.(52.3 mm)Test force ... 12 1 lb.(5.4 0.5 kg)Free length after test ... 3.25 in.(82.6 mm)Outside diameter ... 1.86 in.(47.3 mm)(4) Torque for plug of check valve ... 50 3 lb. ft.(6.9 0.4 mkg)(5) Torque for plug ... 25 3 lb. ft.(3.5 0.4 mkg)(6) 4J6808 Spring for cutout valve: Length under test force ... 4.94 in.(125.5 mm)Test force ... 64.1 5.1 lb.(29.08 2.31 kg)Free length after test ... 7.58 in.(192.5 mm)Outside diameter ... .85 in.(21.6 mm)(7) 4J6809 Spring for cutout valve: Length under test force ... 5.52 in.(140.2 mm)Test force ... 56.0 4.5 lb.(25.40 2.04 kg)Free length after test ... 7.01 in.(178.0 mm)Outside diameter ... .58 in.(1.22 mm)(8) Thickness of 4J6806 Shim ... .048 in.(1.22 mm) One shim will change cutout pressure of charging valve ... 32 psi(2.25 kg/cm2)(9) Torque for plug ... 50 3 lb. ft.(6.9 0.4 mkg)(10) Thickness of 3J7473 Shim ... .005 in.(0.13 mm) One shim will change pressure of relief valve ... 25 psi(1.8 kg/cm2)(11) 4F7115 Spring for relief valve: Length under test force ... 1.34 in.(34.1 mm)Test force ... 50.1 to 58.8 lb.(22.73 to 26.67 kg)Free length after test ... 1.69 .06 in.(42.9 1.5 mm)Outside diameter ... .47 in.(11.9 mm)(12) 8J4508 Spring for flow control valve: Length under test force ... 1.63 in.(41.4 mm)Test force ... 15.92 1.28 lb.(7.221 .581 kg)Free length after test ... 3.61 in.(91.7 mm)Outside diameter ... .812 in.(20.6 mm)(13) Torque for orifice plug ... 20 2 lb. ft.(2.8 .3 mkg)(14) Torque for plug ... 42 3 lb. ft.(5.8 0.4 mkg)