D7R Track-Type Tractor Hydraulic System Caterpillar

Illustration 1	g00470814

Pressure setting for valve ... 22750 ± 300 kPa (3300 ± 45 psi)

Flow rate under test ... 190 ± 10 L/min (50.2 ± 2.6 US gpm)

Oil temperature for test ... 49° ± 3°C (120° ± 5°F)

(1) Torque for nut ... 50 ± 7 N·m (37 ± 5 lb ft)

(2) Torque for housing ... 135 ± 15 N·m (100 ± 11 lb ft)

(3) 4T-2770 Spring

Color code ... pink stripe

Length under test force ... 33 mm (1.30 inch)

Test force ... 328 ± 26 N (73.7 ± 5.8 lb)

Free length after test ... 46 mm (1.81 inch)

Outside diameter ... 11.2 mm (0.44 inch)

(4) Dimension of recess for seat (5) ... 25.5 ± 0.3 mm (1.00 ± 0.01 inch)

(6) 4T-1044 Spring

Length under test force ... 21.9 mm (0.862 inch)

Test force ... 53 ± 4 N (11.9 ± 0.9 lb)

Free length after test ... 29.6 mm (1.165 inch)

Outside diameter ... 12.0 mm (0.472 inch)