3500 SERIES ENGINES HYDRAMECHANICAL PROTECTIVE SYSTEM Caterpillar


Shutoff Control Group

Usage:

(1) Torque for 6K9194 Elbow ... 11 ± 3 N·m (8 ± 2 lb.ft.)

(2) Torque for 321267 Connectors ... 11 ± 3 N·m (8 ± 2 lb.ft.)

(3) Torque for 5M6213 Plugs ... 11 ± 3 N·m (8 ± 2 lb.ft.)

(4) Torque for 321268 Elbows ... 11 ± 3 N·m (8 ± 2 lb.ft.)

(5) Spring for overspeed adjustment: See OVERSPEED SPRING CHART.

(6) Dimension from end of speed sensing valve to the seat ... 117.21 ± 0.25 mm (4.615 ± .010 in.)

(7) Torque for eight cover bolts ... 3.4 ± 0.5 N·m (31 ± 4 lb.in.)

(8) Speeder Spring: See SPEEDER SPRING CHART.

(9) Thickness of geroter assembly ... 25.000 ± 0.006 mm (.9843 ± .0002 in.)

Depth of counterbore ... 25.033 ± 0.006 mm (.9856 ± .0002 in.)

(10) Diameter of shaft ... 14.750 ± 0.013 mm (.5807 ± .0005 in.)

Diameter of bore in cover ... 14.801 ± 0.013 mm (.5827 ± .0005 in.)

(11) Diameter of shaft ... 12.000 ± 0.013 mm (.4724 ± .0005 in.)

Diameter of bore in housing ... 12.051 ± 0.013 (.4744 ± .0005 in.)

(12) 5N6449 Spring for oil pump relief valve:

Length under test force ... 41.25 mm (1.624 in.)

Test force ... 226.9 N (51 lb.)

Free length after test ... 53.37 mm (2.101 in.)

Outside diameter ... 10.59 mm (.417 in.)

(13) Speeder spring adjustment bolt used with two step oil pressure protection function.

(14) Install shaft so end is even with side of housing within ... ± 0.25 mm (± .010 in.)


ACTUATOR VALVE

(15) 3N5757 Spring for selector valve:

Length under test force ... 25.50 mm (1.004 in.)

Test force ... 9.8 N (2.20 lb.)

Free length after test ... 37.69 mm (1.484 in.)

Outside diameter ... 8.81 mm (.347 in.)

(16) 3N5738 Spring for low range oil pressure valve:

Length under test force ... 30.17 mm (1.188 in.)

Test force ... 39.1 N (8.79 lb.)

Free length after test ... 66.62 mm (2.623 in.)

Outside diameter ... 12.62 mm (.497 in.)

(17) 3N5739 Spring for high range oil pressure valve:

Length under test force ... 44.45 mm (1.750 in.)

Test force ... 68.9 N (15.5 lb.)

Free length after test ... 111.56 mm (4.392 in.)

Outside diameter ... 11.99 mm (.472 in.)


PRESSURE CONTROL VALVE

(18) 5N5755 Fuel (Rack) Shutoff Circuit Sequence Valve:

Tighten valve to a torque of ... 58 ± 4 N·m (43 ± 3 lb.ft.)

Set valve to bypass at ... 806 ± 28 kPa (117 ± 4 psi)

at ... 7.57 liter/min (2 U.S. gpm)

(19) 5N6096 Spring for manual shutoff valve:

Length under test force ... 25.50 mm (1.004 in.)

Test force ... 19.6 N (4.4 lb.)

Free length after test ... 48.77 mm (1.920 in.)

Outside diameter ... 13.82 mm (.544 in.)

(20) 8H8731 Spring for pilot valve:

Length under test force ... 17.86 mm (.703 in.)

Test force ... 4.3 N (.95 lb.)

Free length after test ... 22.23 mm (.875 in.)

Outside diameter ... 5.94 mm (.234 in.)

(21) 5N4749 Air Inlet Shutoff Circuit Sequence Valve:

Tighten valve to a torque of ... 58 ± 4 N·m (43 ± 3 lb.ft.)

Set valve to bypass at ... 103 ± 14 kPa (15 ± 2 psi)

Caterpillar Information System:

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