3208 INDUSTRIAL ENGINE Caterpillar


Electric Starter Motor

Usage:

8C3643 (12V), 6V3969 (12V)

Rotation as viewed from drive end ... Clockwise

No load conditions at 25°C (77°F):

Speed ... 6900 ± 1800 rpm

Current draw ... 127.5 ± 27.5A

Voltage ... 11V

(1) Torque for large terminal nuts ... 30.5 ± 3.5 N·m (270 ± 31 lb in)

(2) Torque for small terminal nuts ... 2.25 ± 0.25 N·m (20 ± 2 lb in)

(3) Torque for motor frame terminal ... 8 ± 3 N·m (70 ± 26 lb in)

Solenoid

Current consumption (draw) at 25°C (77°F):

Pull in windings at 10V ... 92.5 ± 7.5A

Hold in windings at 10V ... 23A

9G4339 (24V), 6V4458 (24V), 6V5537 (24V)

Rotation as viewed from drive end ... Clockwise

No load conditions at 25°C (77°F):

Speed ... 7643 ± 1683 rpm

Current draw ... 67.5 ± 7.5A

Voltage ... 23V

(1) Torque for large terminal nuts ... 30.5 ± 3.5 N·m (22 ± 3 lb ft)

(2) Torque for small terminal nuts ... 2.25 ± 0.25 N·m (20 ± 2 lb in)

(3) Torque for motor frame terminal ... 8 ± 3 N·m (70 ± 26 lb in)

Solenoid

Current consumption (draw) at 25°C (77°F):

Pull in windings at 20V ... 56.5 ± 4.5A

Hold in windings at 20V ... 14.6A

6V3954 (12V)

Rotation as viewed from drive end ... Clockwise

No load conditions at 25°C (77°F):

Speed ... 5500 rpm max

Current draw ... 200A max

Voltage ... 12V

(1) Torque for large terminal nuts ... 30.5 ± 3.5 N·m (270 ± 31 lb in)

(2) Torque for small terminal nuts ... 2.25 ± 0.25 N·m (20 ± 2 lb in)

Solenoid

Current consumption (draw) at 25°C (77°F):

Pull in windings at 12V ... 92A

Hold in windings at 12V ... 16A

6V4454 (24), 106-8552 (24V)

Rotation as viewed from drive end ... Clockwise

No load conditions at 25°C (77°F):

Speed ... 5500 rpm min

Current draw ... 140A max

Voltage ... 24V

(1) Torque for large terminal nuts ... 30.5 ± 3.5 N·m (270 ± 31 lb in)

(2) Torque for small terminal nuts ... 2.25 ± 0.25 N·m (20 ± 2 lb in)

Solenoid

Current consumption (draw) at 25°C (77°F):

Pull in windings at 24V ... 51A

Hold in windings at 24V ... 7A

122-6032

Rotation as seen from drive end ... Clockwise

No load conditions:

Speed (rpm) ... 3300 Minimum

Current (amps) ... 130 Maximum

Voltage ... 11.5V

(1) Battery terminal. Three cables or wire terminal maximum between nuts. Two cable terminals maximum with 0 AWG or larger. Tighten nut to a torque of ... 30.5 ± 3.5 N·m (270 ± 31 lb in)

(2) Nut. Tighten nut to a torque of ... 1.5 ± 0.5 N·m (13 ± 4 lb in)

(3) Ground terminal. Tighten nut to a torque of ... 30.5 ± 3.5 N·m (270 ± 31 lb in)

(4) Switch terminal. Tighten nut to a torque of ... 2.25 ± 0.25 N·m (20 ± 2 lb in)

(5) Motor terminal. Tighten nut to a torque of ... 30.5 ± 3.5 N·m (270 ± 31 lb in)

(6) Motor frame terminal. Tighten nut to a torque of ... 17.5 ± 2.5 N·m (155 ± 22 lb in)

Solenoid

Current consumption (draw) at 25°C (77°F):

Pull in windings at 12V ... 160A

Hold in windings at 12V ... 90A

6V5538

Rotation as seen from drive end ... Clockwise

No load conditions:

Speed (rpm) ... 3300 Minimum

Current (amps) ... 80 Maximum

Voltage ... 23.5V

(1) Battery terminal. Three cables or wire terminal maximum between nuts. Two cable terminals maximum with 0 AWG or larger. Tighten nut to a torque of ... 30.5 ± 3.5 N·m (270 ± 31 lb in)

(2) Nut. Tighten nut to a torque of ... 1.5 ± 0.5 N·m (13 ± 4 lb in)

(3) Ground terminal. Tighten nut to a torque of ... 30.5 ± 3.5 N·m (270 ± 31 lb in)

(4) Switch terminal. Tighten nut to a torque of ... 2.25 ± 0.25 N·m (20 ± 2 lb in)

(5) Motor terminal. Tighten nut to a torque of ... 30.5 ± 3.5 N·m (270 ± 31 lb in)

(6) Motor frame terminal. Tighten nut to a torque of ... 17.5 ± 2.5 N·m (155 ± 22 lb in)

Solenoid

Current consumption (draw) at 25°C (77°F):

Pull in windings at 24V ... 103A

Hold in windings at 24V ... 19A

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