G3408 and G3412 Engines Caterpillar


Electric Starting Motor

Usage:

G3408 6NB



Illustration 1g00579817

The direction of rotation of the motor is clockwise when the motor is viewed from the drive end.

Minimum speed with no load at 20 Volts ... 5500 rpm

Maximum speed with no load at 20 Volts ... 7500 rpm

The current consumption at no load is listed below:

Minimum current consumption with the solenoid at 20 Volts ... 95 Amperes

Maximum with solenoid at 20 Volts ... 120 Amperes

Clearance between pinion and housing ... 8.3 to 9.9 mm (0.33 to 0.39 inch)

(1) Minimum tension of brush spring ... 18 N (4 lb)

(2) Torque for the screws that hold the lever to the housing ... 20 ± 3 N·m (15 ± 2 lb ft)

(3) Torque for the terminal nuts ... 27 ± 34 N·m (20 ± 25 lb ft)




Illustration 2g00579831

The direction of rotation of the motor is clockwise when the motor is viewed from the drive end.

Current consumption at 12 Volts with no load and a minimum speed of 3500 rpm. ... 95 Amperes maximum

(1) Torque for housing bolts ... 11 N (2.5 lb)

(2) Torque for terminal nuts ... 27.0 to 33.8 N·m (20.0 to 25.0 lb ft)

(3) Clearance between the pinion and the housing ... 0.51 to 1.27 mm (0.02 to 0.05 inch)

Starter Solenoids

Delco-Remy




Illustration 3g00587211

Current Draw

The current that pulls in the windings at 5 volts is the following value. ... 9 to 11.5 Amperes

The current that pulls in the windings at 20 to 24 volts is the following value. ... 40 to 55.2 Amperes

At 20 to 24 volts, the following current will hold the windings. ... 6.8 Amperes maximum

Prestolite




Illustration 4g00587217

Current draw at 21 °C (70 °F)

The current that pulls in the windings at 12 volts is the following value. ... 23.2 to 26.6 Amperes

At 12 volts, the following current will hold the windings. ... 4.1 to 4.8 amperes

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