583R Pipelayer Hydraulic System Caterpillar

Illustration 1	g00532104

Pressure to open relief valve ... 18250 ± 300 kPa (2647 ± 44 psi)

Flow rate ... 530 ± 8 L/min (140 ± 2 US gpm)

(1) Thickness of one 5J-2721 Shim ... 0.13 mm (.005 inch)

One 5J-2721 Shim will change the high pressure setting by the following amount. ... 170 kPa (25 psi)

(1) Thickness of one 5J-2722 Shim ... 1.22 mm (.048 inch)

One 5J-2722 Shim will change the high pressure setting by the following amount. ... 1655 kPa (240 psi)

(2) 5J-4571 Spring for the pilot valve

Test length ... 48.3 mm (1.90 inch)

Test force ... 530 ± 32 N (119 ± 7.2 lb)

Free length after test ... 60.5 mm (2.38 inch)

Outside diameter ... 14.7 mm (.58 inch)

(3) 2J-0075 Spring for the dump valve

Test length ... 38.9 mm (1.53 inch)

Test force ... 116.3 ± 5.5 N (26.3 ± 1.3 lb)

Free length after test ... 60.5 mm (2.38 inch)

Outside diameter ... 25.4 mm (1.0 inch)