3408C & 3412C INDUSTRIAL ENGINES Caterpillar


Alternators And Regulators

Usage:

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) Torque for nut ... 102 ± 7 N·m (75 ± 5 lb ft)

(2) Torque for output terminal ... 14 ± 1 N·m (10 ± .7 lb ft)

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

Regulator.

Voltage Setting ... No Adjustment

Permissible Voltage Range ... 27 to 29V

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 ... 14 ± 1 N·m (10 ± .7 lb ft)

(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

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 ... 14 ± 1 N·m (10 ± .7 lb ft)

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

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