3304B & 3306B INDUSTRIAL & MARINE ENGINES Caterpillar


Electric Starting Motor

Usage:

8C3596 (12V), 8C3648 (12V), 3E7864 (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

Clearance between pinion and housing (pinion clearance) ... 9.1 mm (.36 in)

(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) Tighten motor frame terminal to a torque of ... 8 ± 3 N·m (70 ± 26 lb in)

Solenoid

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

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

Hold in windings at 10V ... 23A max

8C3647 (24V), 8C3650 (24V), 8C3651 (24V), 6V5207 (24V), 6V5537 (24V), 6V5795 (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

Clearance between pinion and housing (pinion clearance) ... 9.1 mm (.36 in)

(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) Tighten motor frame terminal to a torque of ... 8 ± 3 N·m (70 ± 26 lb in)

Solenoid

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

Pull in windings at 10V ... 56.5 ± 4.5

Hold in windings at 10V ... 14.6A max

7T2265 (12V), 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 ± 30 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

8N2145 (24V), 3T6305 (24V), 7T0798 (24V), 6V5023 (24V), 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 ± 30 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

3T2647 (24V)

Rotation as viewed from drive end ... Clockwise

No load conditions at 257deg;C (77°F):

Speed ... 8130 ± 2130 rpm

Current draw ... 89 ± 29A

Voltage ... 23V

(1) Torque for large terminal nuts ... 30.5 ± 3.5 N·m (270 ± 30 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 20V ... 56.5 ± 4.5A

Hold in windings at 20V ... 14.6A

6V5226 (24V), 6V5538 (24V), 9X4447 (24V), 9X4453 (24V)

Rotation as viewed from drive end ... Clockwise

No load conditions at 25°C (77°F):

Speed ... 3300 rpm min

Current draw ... 80A max

Voltage ... 23.5V

(1) Torque for 1/2 - 13 terminal nuts ... 30.5 ± 3.5 N·m (270 ± 30 lb in)

(2) Torque for 10 - 32 terminal nut ... 2.25 ± 0.25 N·m (20 ± 2 lb in)

(3) Torque for M10 × 1.5 terminal nut ... 17.5 ± 2.5 N·m (155 ± 22 lb in)

(4) Torque for bolt in end of terminal stud ... 1.5 ± 0.5 N·m (13 ± 4 lb in)

Solenoid

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

Pull in windings at 24V ... 103A

Hold in windings at 24V ... 19A

Caterpillar Information System:

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