561M Pipelayer Caterpillar

Illustration 1	g00100309

Flow ... 76 L/min (20 US gpm)

(1) 5M-9548 Spring for poppet valve

Test length ... 21.3 mm (0.84 inch)

Test Force ... 4.5 ± 0.4 N (1.0 ± 0.08 lb)

Free length after test ... 34.0 mm (1.34 inch)

Outside diameter ... 12.2 mm (0.48 inch)

(2) 2S-1382 Spring for relief valve

Test length ... 44.2 mm (1.74 inch)

Test Force ... 103 ± 8 N (23.1 ± 1.8 lb)

Free length after test ... 50.0 mm (1.97 inch)

Outside diameter ... 15.09 mm (0.594 inch)

(3) 4M-1751 Spacer

Thickness of Spacer ... 0.40 mm (0.016 inch)

Outside diameter of spacer ... 15.09 ± 0.25 mm (0.594 ± 0.010 inch)

One spacer will change pressure. ... 19 kPa (2.8 psi)

(3) 5S-7001 Spacer

Thickness of Spacer ... 0.90 mm (0.035 inch)

Outside diameter of spacer ... 14.15 ± 0.05 mm (0.557 ± 0.002 inch)

One spacer will change pressure. ... 40 kPa (6 psi)