621G and 627G Wheel Tractor-Scrapers Hydraulic System Caterpillar


Pilot Control Actuator (Bowl)

Usage:

621G ALP



Illustration 1g00751366

(1) Torque for cartridge ... 35 ± 3 N·m (26 ± 2 lb ft)

(2) 146-3728 Spring Washer

Test length ... 1.8 mm (0.071 inch)
Test force ... 1261 ± 189 N (283.5 ± 42.5 lb)
Free length after test ... 2.36 mm (0.093 inch)
Outside diameter ... 38.1 mm (1.50 inch)

(3) 148-2350 Coil

Operating voltage ... 24 VDC
Duty cycle ... Continuous
Coil resistance at 25 °C (77.0 °F) ... 5.0 ± 0.3 Ohms

(4) 173-4012 Spring

Test length ... 11 mm (0.4 inch)
Test force ... 3.9 N (0.88 lb)
Free length after test ... 11.6 mm (0.46 inch)
Outside diameter ... 9.3 mm (0.37 inch)

(5) 188-3365 Spring

Test length ... 46.5 mm (1.83 inch)
Test force ... 21.00 ± 0.63 N (4.721 ± 0.142 lb)
Free length after test ... 54.42 mm (2.143 inch)
Outside diameter ... 12.4 mm (0.49 inch)

(6) 141-5498 Spring

Test length ... 43 mm (1.7 inch)
Test force ... 138 ± 11 N (31.0 ± 2.5 lb)
Free length after test ... 77.5 mm (3.05 inch)
Outside diameter ... 21 mm (0.8 inch)

(7) 141-5497 Spring

Test length ... 40 mm (1.6 inch)
Test force ... 192.6 ± 15.4 N (43.30 ± 3.46 lb)
Free length after test ... 64.08 mm (2.523 inch)
Outside diameter ... 28.6 mm (1.13 inch)

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