572R Series II Pipelayer Hydraulic System Caterpillar

Illustration 1	g01290427

(1) Torque for the locknuts that hold the sight glass ... 30 ± 5 N·m (22 ± 4 lb ft)

(2) Hand tighten the vacuum breaker.

Vacuum Relief ... 2 ± 1 kPa (0.29 ± 0.15 psi)

Pressure Relief ... 180 ± 21 kPa (26 ± 3 psi)

(3) 7B-3039 Spring for the drain valve

Length under test force ... 26.2 mm (1.03 inch)

Test force ... 15.6 ± 1.2 N (3.51 ± 0.27 lb)

Free length after test ... 36.6 mm (1.44 inch)

Outside diameter ... 19.8 mm (0.78 inch)

(4) Torque for the drain plug in the tank ... 68 ± 7 N·m (50 ± 5 lb ft)

(5) Torque for the bolt that holds the filter ... 60 ± 7 N·m (44 ± 5 lb ft)

(6) Torque for the bolt that holds the filter ... 60 ± 7 N·m (44 ± 5 lb ft)