3412 Generator Set Engines Caterpillar


Electric Starting Motor

Usage:

3412C 4BZ



Illustration 1g00362864



Illustration 2g00367673

Typical solenoid connections

When the electric starting motor is viewed from the pinion end, the motor rotates in the following direction. ... Clockwise

No load conditions at 25 °C (77 °F)

Speed ... 6950 ± 1650 rpm
Current draw ... 115 ± 25 amp
Voltage ... 23 V

(1) Tighten the nut on the ground terminal to the following torque. ... 30.5 ± 3.5 N·m (22 ± 3 lb ft)

(2) Three wires are the maximum between the nuts. Tighten the nut on the battery terminal to the following torque. ... 30.5 ± 3.5 N·m (22 ± 3 lb ft)

(3) Tighten the ground terminal to the following torque. ... 2.25 ± 0.25 N·m (20 ± 2 lb in)

(4) Tighten the nut on the switch terminal to the following torque. ... 2.25 ± 0.25 N·m (20 ± 2 lb in)

(5) Tighten the nut on the motor terminal to the following torque. ... 30.5 ± 3.5 N·m (22 ± 3 lb ft)

(6) Tighten the nut on the motor frame terminal to the following torque. ... 30.5 ± 3.5 N·m (22 ± 3 lb ft)

Solenoid

Current draw at 20 V and 25 °C (77 °F)

Pull-in windings ... 49.3 ± 3.3 Amp
Hold-in windings ... 6.8 Amp maximum
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