BUSHING 4755388 - Caterpillar

Pressure setting of relief valve with engine at high idle ... 2000 25 psi(13 800 172 kPa)Pressure to each steering cylinder with valve in NEUTRAL position ... 40 10 psi(280 70 kPa) for 8J2391 ... 85 15 psi(590 105 kPa) for 1U327Permissible difference in pressures (between steering cylinders) with valve in NEUTRAL position ... 10 psi(70 kPa)(1) Torque for plug (orifice) ... 120 24 lb. in.(13.6 2.7 N m)(2) 2J6088 Spring (outer) for flow control valve: Length under test force ... 1.53 in.(38.9 mm)Test force ... 22.1 1.1 lb.(98.3 4.9 N)Free length after test ... 2.34 in.(59.4 mm)Outside diameter ... .812 in.(20.62 mm)(3) 4J7490 Spring (inner) for flow control valve: Length under test force ... 1.63 in.(41.4 mm)Test force ... 13.3 .7 lb.(59.2 3.1 N)Free length after test ... 2.00 in.(50.8 mm)Outside diameter ... .60 in.(15.2 mm)(4) 2J6089 Spring for pilot valve: Length under test force ... 1.43 in.(36.3 mm)Test force ... 67.6 3.4 lb.(300.7 15.1 N)Free length after test ... 1.74 in.(44.2 mm)Outside diameter ... .49 in.(12.4 mm)(5) 3H2549 Shims: Thickness of one shim ... .010 in.(0.25 mm)One shim changes pressure ... 40 psi(280 kPa)(6) 7F9802 Spring (inner) for valve spool: Length under test force ... 1.88 in.(47.8 mm)Test force ... 23.9 1.9 lb.(106.3 8.5 N)Free length after test ... 3.31 in.(84.1 mm)Outside diameter ... 1.25 in.(31.8 mm)(7) 7H832 Spring (outer) for valve spool: Length under test force ... 1.53 in.(38.9 mm)Test force ... 40 3 lb.(177.9 13.3 N)Free length after test ... 2.20 in.(55.9 mm)Outside diameter ... 1.67 in.(42.4 mm)(8) Thickness of 5J4776 Shim ... .005 in.(0.13 mm) Thickness of 4J8224 Shim ... .010 in.(0.25 mm)