3304B & 3306B INDUSTRIAL & MARINE ENGINES Caterpillar


Alternators And Regulators

Usage:

4N3986 Alternator (24V 60A)

NOTE: Load the battery with a carbon pile (4C4911 Battery Load Tester) to get the maximum alternator output.

Polarity ... Negative Ground

Rotation ... Either Direction

Minimum full load current at 5000 rpm ... 54A

Minimum full load current at 1500 rpm ... 19A

Output voltage ... 27.5 ± 1.0V

(1) Shaft nut torque ... 102 ± 7 N·m (75 ± 5 lb ft)

(2) Torque for output terminal ... 7.1 ± .8 N·m (5.22 ± .59 lb ft)

(3) Regulator.

Voltage Setting ... No Adjustment

Permissible Voltage Range ... 26.5 to 28.5V

4N3987 Alternator (32V 60A)

NOTE: Load the battery with a carbon pile (4C4911 Battery Load Tester) to get the maximum alternator output.

Polarity ... Negative Ground

Rotation ... Either Direction

Minimum full load current at 5000 rpm ... 60A

Minimum full load current at 1500 rpm ... 20A

Output voltage ... 36.6 ± 1.5V

(1) Shaft nut torque ... 102 ± 7 N·m (75 ± 5 lb ft)

(2) Torque for output terminal ... 7.1 ± .8 N·m (62.83 ± 7.08 lb in)

(3) Regulator.

Voltage Setting ... No Adjustment

Permissible Voltage Range ... 35.1 to 38.1V

5S6698 Alternator (12V 75A)

NOTE: Load battery with a carbon pile (4C4911 Battery Load Tester) to get maximum alternator output.

Polarity ... Negative Ground

Rotation ... Either Direction

Minimum full load current at 5000 rpm ... 75A

Minimum full load current at 1500 rpm ... 42A

Output voltage ... 13.6 ± 1V

(1) Shaft nut torque ... 102 ± 7 N·m (75 ± 5 lb ft)

(2) Torque for negative terminal screw ... 6.2 ± 0.6 N·m (55 ± 5 lb in)

(3) Torque for positive terminal nut ... 13.5 ± 1.3 N·m (119 ± 12 lb in)

(4) Regulator.

Voltage setting ... No Adjustment

Permissible voltage range ... 13.5 to 14.5V

3E7892 Alternator (12V 85A)

NOTE: Load battery with a carbon pile (4C4911 Battery Load Tester) to get maximum alternator output.

Polarity ... Negative Ground

Rotation ... Either Direction

Minimum full load current at 5000 rpm ... 77A

Minimum full load current at 1500 rpm ... 38A

Output voltage ... 14.0 ± 0.5V

(1) Shaft nut torque ... 102 ± 7 N·m (75 ± 5 lb ft)

(2) Torque for negative terminal screw ... 6.2 ± 0.6 N·m (55 ± 5 lb in)

(3) Torque for positive terminal nut ... 13.5 ± 1.3 N·m (119 ± 12 lb in)

(4) Regulator.

Voltage setting ... No Adjustment

Permissible voltage range ... 13.5 to 14.5V

3E7578 Alternator (24V 50A), 112-5041 Alternator (24V 50A)

NOTE: Load battery with a carbon pile (4C4911 Battery Load Tester) to get maximum alternator output.

Polarity ... Negative Ground

Rotation ... Either Direction

Minimum full load current at 5000 rpm ... 47A

Minimum full load current at 1500 rpm ... 18A

Output voltage ... 28 ± 1V

(1) Shaft nut torque ... 102 ± 7 N·m (75 ± 5 lb ft)

(2) Torque for negative terminal screw ... 6.2 ± 0.6 N·m (55 ± 5 lb in)

(3) Torque for positive terminal nut ... 13.5 ± 1.3 N·m (119 ± 12 lb in)

(4) Regulator.

Voltage setting ... No Adjustment

Permissible voltage range ... 13.5 to 14.5V

3T1888 Alternator (24V 50A)

NOTE: Load battery with a carbon pile (4C4911 Battery Load Tester) to get maximum alternator output.

Polarity ... Negative Ground

Rotation ... Either Direction

Speed for testing (rpm) ... 5000

Minimum full load current at 5000 rpm ... 47A

Minimum full load current at 1500 rpm ... 18A

Output voltage ... 27.5 ± 1V

(1) Shaft nut torque ... 102 ± 7 N·m (75 ± 5 lb ft)

(2) Torque for negative terminal screw ... 6.2 ± 0.6 N·m (55 ± 5 lb in)

(3) Torque for positive terminal nut ... 13.5 ± 1.3 N·m (119 ± 12 lb in)

(4) Regulator.

Voltage setting ... No Adjustment

Permissible voltage range ... 26.5 to 28.5V

3E7577 Alternator (24V 75A)

NOTE: Load the battery with a carbon pile (4C4911 Battery Load Tester) to get the maximum alternator output.

Polarity ... Negative Ground

Rotation ... Either Direction

Minimum full load current at 5000 rpm ... 67A

Minimum full load current at 2000 rpm ... 29A

Output voltage ... 28 ± 1V

(1) Shaft nut torque ... 102 ± 7 N·m (75 ± 5 lb ft)

(2) Torque for negative terminal screw ... 6.2 ± 0.6 N·m (55 ± 5 lb in)

(3) Torque for positive terminal nut ... 13.5 ± 1.3 N·m (119 ± 12 lb in)

Regulator.

Voltage Setting ... No Adjustment

Permissible Voltage Range ... 27 to 29V

8N0999 Alternator (24V 75A)

NOTE: Load the battery with a carbon pile (4C4911 Battery Load Tester) to get the maximum alternator output.

Polarity ... Negative Ground

Rotation ... Either Direction

Minimum full load current at 5000 rpm ... 67A

Minimum full load current at 2000 rpm ... 29A

Output voltage ... 27.5 ± 1V

(1) Shaft nut torque ... 102 ± 7 N·m (76 ± 5 lb ft)

(2) Torque for negative terminal screw ... 6.2 ± 0.6 N·m (55 ± 5 lb in)

(3) Torque for positive terminal nut ... 13.5 ± 1.3 N·m (119 ± 12 lb in)

Regulator.

Voltage Setting ... No Adjustment

Permissible Voltage Range ... 26.5 to 28.5V

7G7889 Alternator (12V 60A)

NOTE: Load the battery with a carbon pile (4C4911 Battery Load Tester) to get the maximum alternator output.

Polarity ... Negative Ground

Rotation ... Either Direction

Minimum full load current at 5000 rpm ... 60A

Minimum full load current at 1500 rpm ... 22A

Output voltage ... 14.0 ± 0.3V

(1) Shaft nut torque ... 102 ± 7 N·m (75 ± 5 lb ft)

(2) Torque for positive terminal nut ... 6.2 ± 0.6 N·m (55 ± 5 lb in)

(3) Torque for ground terminal nut ... 2.25 ± 0.25 N·m (20 ± 2 lb in)

(4) Regulator.

Voltage Setting ... No adjustment

Permissible voltage range ... 13.7 to 14.3V

3T6352 Alternator (24V 35A)

NOTE: Load the battery with a carbon pile (4C4911 Battery Load Tester) to get the maximum alternator output.

Polarity ... Negative Ground

Rotation ... Either Direction

Minimum full load current at 5000 rpm ... 35A

Minimum full load current at 1500 rpm ... 11A

Output voltage ... 28 ± 1V

(1) Shaft nut torque ... 102 ± 7 N·m (75 ± 5 lb ft)

(2) Torque for positive terminal nut ... 6.2 ± 0.6 N·m (55 ± 5 lb in)

(3) Torque for the ground terminal nut ... 2.25 ± 0.25 N·m (20 ± 2 lb in)

(4) Regulator.

Voltage setting ... No adjustment

Permissible voltage range ... 27 to 29V

5N5692 Alternator (24V 45A)

NOTE: Load the battery with a carbon pile (4C4911 Battery Load Tester) to get the maximum alternator output.

Polarity ... Negative Ground

Rotation ... Either Direction

Minimum full load current at 5000 rpm ... 42.3A

Minimum full load current at 2000 rpm ... 15.8A

Output voltage ... 28 ± 1V

(1) Shaft nut torque ... 102 ± 7 N·m (75 ± 5 lb ft)

(2) Torque for positive terminal nut ... 6.2 ± 0.6 N·m (55 ± 5 lb in)

(3) Torque for ground terminal nut ... 2.25 ± 0.25 N·m (20 ± 2 lb in)

(4) Regulator.

Voltage setting ... No adjustment

Permissible voltage range ... 27 to 29V

7N9720 Alternator (24V 35A)

NOTE: Load the battery with a carbon pile (4C4911 Battery Load Tester) to get the maximum alternator output.

Polarity ... Negative Ground

Rotation ... Clockwise

Minimum full load current at 5000 rpm ... 35A

Minimum full load current at 1500 rpm ... 12A

Output voltage ... 27.5 ± 1.0V

(1) Shaft nut torque ... 102 ± 7 N·m (75 ± 5 lb ft)

(2) Regulator.

Voltage setting ... No adjustment

Permissible voltage range ... 26.5 to 28.5V

(3) Torque for positive terminal nut ... 13.5 ± 1.3 N·m (119 ± 12 lb in)

(4) Torque for ground terminal nut ... 2.1 to 2.8 N·m (19 to 25 lb in)

9G9538 Alternator (24V 50A), 100-5046 Alternator (24V 50A)

NOTE: Load the battery with a carbon pile (4C4911 Battery Load Tester) to get the maximum alternator output.

Polarity ... Negative Ground

Rotation ... Either Direction

Minimum full load current at 5000 rpm ... 45A

Minimum full load current at 1500 rpm ... 14.5A

Output voltage ... 27.5 ± 1.0V

(1) Shaft nut torque ... 102 ± 7 N·m (75 ± 5 lb ft)

(2) Regulator.

Voltage setting ... No adjustment

Permissible voltage range ... 26.5 to 28.5V

(3) Torque for positive terminal nut ... 13.5 ± 1.3 N·m (119 ± 12 lb in)

(4) Torque for ground terminal nut ... 2.25 ± 0.25 N·m (20 ± 2 lb in)

9G4574 Alternator (24V 35A)

NOTE: Load the battery with a carbon pile (4C4911 Battery Load Tester) to get the maximum alternator output.

Polarity ... Negative Ground

Rotation ... Either Direction

Minimum full load current at 5000 rpm ... 35.6A

Minimum full load current at 1500 rpm ... 15.8A

Output voltage ... 28 ± 1V

(1) Shaft nut torque ... 102 ± 7 N·m (75 ± 5 lb ft)

(2) Torque for positive terminal nut ... 13.5 ± 1.3 N·m (119 ± 12 lb in)

(3) Torque for ground terminal nut ... 4.4 ± 1.0 N·m (39 ± 9 lb in)

(4) Regulator.

Voltage setting ... No adjustment

Permissible voltage range ... 27 to 29V

6T7223 Alternator (24V 50A), 100-5045 Alternator (24V 50A)

NOTE: Load the battery with a carbon pile (4C4911 Battery Load Tester) to get the maximum alternator output.

Polarity ... Negative Ground

Rotation ... Either Direction

Minimum full load current at 5000 rpm ... 44.6A

Minimum full load current at 1500 rpm ... 16.5A

Output voltage ... 28 ± 1V

(1) Shaft nut torque ... 102 ± 7 N·m (75 ± 5 lb ft)

(2) Torque for positive terminal nut ... 13.5 ± 1.3 N·m (119 ± 12 lb in)

(3) Torque for ground terminal nut ... 4.4 ± 1.0 N·m (39 ± 9 lb in)

(4) Regulator.

Voltage setting ... No adjustment

Permissible voltage range ... 27 to 29V

6T1396 Alternator (12V 51A)

NOTE: Load battery with a carbon pile (4C4911 Battery Load Tester) to get maximum alternator output.

Polarity ... Negative Ground

Rotation ... Either Direction

Minimum full load current at 5000 rpm ... 45A

Minimum full load current at 1500 rpm ... 14.5A

Output voltage ... 13.8 ± 0.2V

(1) Shaft nut torque ... 60 ± 7 N·m (44 ± 5 lb ft)

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

(3) Torque for large terminal nut ... 4.1 ± 0.4 N·m (36 ± 3.54 lb in)

(4) Regulator.

Voltage setting ... No Adjustment

Permissible voltage range ... 13.6 to 14V

6T1395 Alternator (24V 35A)

NOTE: Load battery with a carbon pile (4C4911 Battery Load Tester) to get maximum alternator output.

Polarity ... Negative Ground

Rotation ... Either Direction

Minimum full load current at 5000 rpm ... 27.9A

Minimum full load current at 1500 rpm ... 10.8A

Output voltage ... 28 ± 1V

(1) Shaft nut torque ... 60 ± 7 N·m (44 ± 5 lb ft)

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

(3) Torque for large terminal nut ... 4.1 ± 0.4 N·m (36 ± 3.54 lb in)

(4) Regulator.

Voltage setting ... No Adjustment

Permissible voltage range ... 27 to 29V

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3304B & 3306B INDUSTRIAL & MARINE ENGINES Systems Operation
3304B & 3306B INDUSTRIAL & MARINE ENGINES Testing & Adjusting
3304B & 3306B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Introduction
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