SUPPORT 9W0579 - Caterpillar

Do not use caustic (corrosive) materials to clean any parts in this valve group. Caustic materials will cause corrosion and damage to parts.
(1) 5J2721 Shim thickness ... 0.13 mm (.005 in) One shim will change pressure ... 13 kPa (2 psi)6J3993 Shim thickness ... 0.25 mm (.010 in)One shim will change pressure ... 26 kPa (4 psi)4M1751 Shim thickness ... 0.41 mm (.016 in)One shim will change pressure ... 40 kPa (6 psi)5J1036 Shim thickness ... 0.79 mm (.031 in)One shime will change pressure ... 81 kPa (12 psi)(2) 7T570 Spring (inner) Color code ... two orange stripesLength under test force ... 63.93 mm (2.517 in)Test force ... 43.4 2.2 N (9.76 .49 lb)Free length after test ... 80.44 mm (3.167 in)Outside diameter ... 8.13 mm (.320 in)(3) 9W7411 Spring (outer) Color code ... three yellow stripesFirst Test Length under test force ... 79.5 mm (3.13 in)Test force ... 93.9 4.7 N (21 1 lb)Second Test Length under test force ... 63.0 mm (2.48 in)Test force ... 282.1 10.3 N (63 2 lb)Free length after test ... 87.76 mm (3.455 in)Outside diameter ... 14.732 mm (.580 in)(4) 4M2381 Spring Quantity ... twoLength under test force ... 12.2 mm (.48 in)Test force ... 2.30 0.18 N (.5 .04 lb)Free length after test ... 22.6 mm (.89 in)Outside diameter ... 7.62 mm (.300 in)(5) Torque for two bolts ... 30 7 N m (22 5 lb ft)(6) 6T8237 Decay Orifice (screened) Color code ... blueOrifice size ... 1.19 mm (.047 in)(7) Torque for four bolts ... 30 7 N m (22 5 lb ft)(8) 6T8236 Decay Orifice (screened) Color code ... yellowOrifice size ... 1.40 mm (.055 in)(9) 5J6153 Shim Thickness ... 0.18 mm (.007 in) One shim will change pressure ... 33 kPa (5 psi)8M2932 Shim Thickness ... 0.41 mm (.016 in)One shim will change pressure ... 77 kPa (11 psi)8H9190 Shim thickness ... 0.76 mm (.030 in)One shim will change pressure ... 143 kPa (21 psi)(10) 8P9738 Load Piston Orifice Orifice thickness ... 4.58 mm (.180 in)(11) 9W4289 Spring Length under test force ... 44.5 mm (1.75 in)Test force ... 245 12 N (55 2.7 lb)Free length after test ... 54.8 mm (2.16 in)Outside diameter ... 11.53 mm (.454 in)(12) 8P5058 Spring Length under test force ... 25.4 mm (1.00 in)Test force ... 54.4 N (12 lb)Free length after test ... 32.51 mm (1.280 in)Outside diameter ... 15.24 mm (.600 in)(13) 9P683 Spring Length under test force ... 25.4 mm (1.00 in)Test force ... 35.6 2.8 N (8 .6 lb)Free length after test ... 66.04 mm (2.600 in)Outside diameter ... 21.4 mm (.84 in)(14) Torque for four bolts ... 30 7 N m (22 5 lb ft)(15) 2P5700 Spring Length under test force ... 36.09 mm (1.421 in)Test force ... 94 8 N (21 1.8 lb)Free length after test ... 53.77 mm (2.117 in)Outside diameter ... 15.88 mm