3406C INDUSTRIAL ENGINE Caterpillar


Alternator And Regulator

Usage:

4N3986 Alternator Group 24V 60A


Typical Example

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

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

Speed for testing (rpm) ... 6500

Output voltage ... 27.5 ± 1.0V

Output (cold) ... 45A

(1) Torque for the ground terminal nut ... 2.3 ± 0.6 N· (21 ± 5 lb in)

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

(3) Torque for the output terminal nut ... 7.1 ± 0.9 N· (64 ± 8 lb in)

3T6353 Regulator (Inside Alternator)

Voltage setting ... No adjustment

Permissible voltage range ... 26 to 30V

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

Speed for testing (rpm) ... 5000

Output voltage ... 28 ± 1V

Output (hot) ... 27.9A

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

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

(3) Torque for large terminal nut ... 6.2 ± 0.6 N· (55 ± 5 lb in)

(4) Regulator.

Voltage setting ... No Adjustment

Permissible voltage range ... 27 to 29V

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· (19.9 ± 2.2 lb in)

(2) Torque for the pulley nut ... 102 ± 7 N· (75 ± 5 lb ft)

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

3T6354 Regulator (Inside Alternator)

Voltage setting ... No adjustment

Permissible voltage range ... 27 to 29V

7N9720 Alternator 24V 35A


Typical Example

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· (19 to 25 lb in)

(1) Torque for the pulley nut ... 102 ± 7 N· (75 ± 5 lb ft)

(2) Torque for the output terminal nut ... 13.5 ± 1.3 N· (119.47 ± 11.5 lb in)

9G7567 Regulator (Under Alternator Cover)

Voltage rating ... 28V

Polarity ... Negative Ground

Voltage setting range ... 26.5 to 28.5V

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 ... 102 ± 7 N· (75 ± 5 lb ft)

(2) Torque for the output terminal nut ... 13.5 ± 1.3 N· (119.47 ± 11.5 lb in)

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

7T2798 Regulator (Inside Alternator)

Voltage setting ... No adjustment

Permissible voltage range ... 27 to 29V

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