3408C ENGINE FOR CATERPILLAR BUILT MACHINES Caterpillar


Alternator And Regulator

Usage:

6N9294 Alternator Group, 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

Speed for testing (rpm) ... 5000

Output voltage ... 28 ± 1.0V

Output (cold) ... 35A

(1) Torque for the ground terminal nut ... 2.25 ± .25 N·m (19.9 ± 2.2 lb in)

(2) Torque for the pulley nut ... 102 ± 7 N·m (76 ± 5 lb ft)

(3) Torque for the output terminal nut ... 6.2 ± .6 N·m (54.9 ± 5.3 lb in)

3T6354 Regulator (Inside Alternator)

Voltage setting ... No adjustment

Permissible voltage range ... 27 to 29V


Typical Example

7C9742 Alternator Group, 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

Field current at rated voltage and 27°C (80°F) ... 2.5 to 2.9A

(1) Torque for nut ... 95 to 109 N·m (70 to 78 lb ft)

(2) Torque for output terminal ... 13.5 ± 1.3 N·m (10 ± 1 lb ft)

3T6354 Regulator (Inside Alternator)

Voltage Setting ... No Adjustment

Permissible Voltage Range ... 27 to 29V

6N9294 Alternator Group, 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

Speed for testing (rpm) ... 5000

Output voltage ... 27.5 ± 1.0V

Output (cold) ... 35A

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

(1) Torque for the pulley nut ... 102 ± 7 N·m (76 ± 5 lb ft)

(2) Torque for the output terminal nut ... 13.5 ± 1.3 N·m (10 ± 1 lb ft)

9G7567 Regulator (Under Alternator Cover). For use with the 7N9720 Alternator.

Voltage rating ... 28V

Polarity ... Negative Ground

Voltage setting range ... No Adjustment

6N9294 Alternator Group, 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

Speed for testing (rpm) ... 5000

Output voltage ... 28 ± 1.0V

Output (cold) ... 35.6A

(1) Torque for the pulley nut ... 95 to 110 N·m (70 to 80 lb ft)

(2) Torque for the output terminal nut ... 13.5 ± 1.3 N·m (10 ± 1 lb ft)

(3) Torque for the ground terminal nut ... 3.4 to 5.4 N·m (31 to 49 lb in)

7T2798 Regulator (Inside Alternator)

Voltage setting ... No Adjustment

Permissible voltage range ... 27 to 29V


Typical Example

4N3986 Alternator Group 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

(1) Torque for nut ... 95 to 109 N·m (70 to 78 lb ft)

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

3T6354 Regulator (Inside Alternator)

Voltage Setting ... No Adjustment

Permissible Voltage Range ... 26.5 to 28.5V

100-5047 Alternator Group, 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

Speed for testing (rpm) ... 5000

Output voltage ... 28 ± 1.0V

Output (cold) ... 44.6A

(1) Torque for the pulley nut ... 102 ± 7 N·m (76 ± 5 lb ft)

(2) Torque for the output terminal nut ... 13.5 ± 1.3 N·m (10 ± 1 lb ft)

(3) Torque for the ground terminal nut ... 4.4 ± 1 N·m (3 ± .7 lb ft)

7T2798 Regulator (Under Alternator Cover). For use with the 100-5045 Alternator.

Permissible voltage range ... 27 to 29V

Voltage setting range ... No Adjustment

100-5047 Alternator Group, 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

Speed for testing (rpm) ... 5000

Output voltage ... 27.5 ± 1.0V

Output (cold) ... 45A

Torque for the ground terminal nut ... 2.25 ± .25 N·m (1.65 ± .184 lb ft)

(1) Torque for the pulley nut ... 102 ± 7 N·m (76 ± 5 lb ft)

(2) Torque for the output terminal nut ... 13.5 ± 1.3 N·m (10 ± 1 lb ft)

9G7567 Regulator (Under Alternator Cover) For use with the 100-5046 Alternator.

Voltage rating ... 28V

Polarity ... Negative Ground

Voltage setting range ... No Adjustment

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