ARTICULATED DUMP TRUCK ELECTRICAL SYSTEMS Caterpillar

Water Temperature Switch, 5L6435

With an increase in temperature switch closes at ... 98 degrees C (209 degrees F)

With a decrease in temperature switch opens at ... 92 degrees C (197 degrees F)

Engine Oil Pressure Switch, 3L6306

With a decrease in pressure switch closes at ... 41 to 69 kPa (6 to 10 psi.)

Oil Pressure Switch, 9G8010

With an increase in pressure, switch closes at a maximum of ... 83 kPa (12 psi.)

With a decrease in pressure, switch opens at a minimum of ... 34 kPa (5 psi.)

Magnetic Pick - Up, 3N7477
(D400 & D35HP)

Clearance between pick - up and drilled plate ... 4 to 5 mm (0.157 to 0.197 in.)

Torque for lock nut ... 2.62 N·m (20 lb.in.)

Coil resistance ... 360 to 440 ohms

Speed Switch, 5U6140
(D400 & D35HP)

Circuit completed when rising engine speed reaches ... approximately 1550 rpm

Circuit opened when falling engine speed reaches ... approximately 1450 rpm

Engine Stop Solenoid, 7N9504
(C Models)

(G. W. Lisk Part No. W - 1085 - 2, 24V D.C.)

Coil resistance at room temperature ... 5 ohms

Solenoid Valve, 5U1690
(D400 & D35HP)

Resistance of solenoid coil at room temperature ... 18 to 20 ohms

Pressure Switch, 5U6023

(Torque converter lock - up warning circuit)

Operating pressure ... 1380 kPa (200 psi.)

De-energised condition ... Normally Closed

Fitting ... 1/8" N.P.T.F. Male

Electrical connectors ... 6.35 mm blade connectors

Maximum pressure ... 4140 kPa (600 psi.)

Pressure Switch, 5U7177

(Transmission low oil pressure warning circuit)

Operating pressure ... 825 kPa (120 psi.)

De-energised condition ... Normally Closed

Fitting ... 1/8" N.P.T.F. Male

Electrical connectors ... 6.35 mm blade connectors

Maximum pressure ... 1725 kPa (250 psi.)

Pressure Switch, 5U3686

(Speed switch circuit - D400)

Operating pressure ... 1380 kPa (200 psi.)

De-energised condition ... Normally open

Fitting ... 1/8" N.P.T.F. Male

Electrical connectors ... 6.35 mm blade connectors

Maximum pressure ... 3450 kPa (500 psi.)

Level Switch, 5U3090

(Low hydraulic oil level and Low fuel level warning circuits)

(Compac Part No. 15-650-N)

Fitting ... 1/2" N.P.T.F. Male

Torque for large diameter thread ... 27.1 N·m (20 ft.lb.)

Torque for small diameter thread ... 2.3 N·m (1.7 ft.lb.)

Engine Shutoff Solenoid, 1W1223
(D400)

1. Distance from face of solenoid to plate ... 24.4 mm (0.96 in.)

2. Distance of plunger travel ... 15.7 mm (0.62 in.)

3. Torque for shaft nut ... 17 to 31 N·m (13 to 23 ft.lb.)

4. Torque for terminal nuts ... 1.3 to 1.9 N·m (11 to 17 ft.lb.)

NOTE: When adjusting distance (1) do not activate for more than 2.5 minutes, or damage will result.

Relay, 6U0376
(D400)

Operating voltage ... 24 Volts

Cut-in voltage ... 8 to 16 Volts

Maximum resistive current rating ... 10 Amps