BREATHER AS 3281024 - Caterpillar

Illustration 1 g00292776
Side view of the alternator
Illustration 2 g00292777
End view of the 12 volt alternator which shows the electrical connectionsNote: Test the battery with a carbon pile 4C-4911 Battery Load Tester in order to measure the maximum output from the alternator. 12 volt alternator at 25°C (77°F) Polarity ... Insulated return to the case Rotation ... Clockwise Minimum full load current at 5000 rpm ... 48.6 amperes Minimum full load current at 1500 rpm ... 20.7 amperes Output voltage ... 14.0 0.5 volts Rated voltage ... 12 volts
Illustration 3 g00503643
End view of the 24 volt alternator which shows the electrical connectionsNote: Test the battery with a carbon pile 4C-4911 Battery Load Tester in order to measure the maximum output from the alternator. 24 volt alternator at 25°C (77°F) Polarity ... Insulated return to the case Rotation ... Clockwise Minimum full load current at 5000 rpm ... 47 amperes Minimum full load current at 1500 rpm ... 13.5 amperes Output voltage ... 28 1 volts Rated voltage ... 24 volts (1) Tighten the pulley nut to the following torque: ... 45 to 55 N m (33 to 40 lb ft) (2) Tighten the terminal nut "W" to the following torque: ... 2 to 2.5 N m (17 to 22 lb in) (3) Tighten terminal nut "D+" to the following torque: ... 1.45 to 1.95 N m (13 to 17 lb in) (4) Terminal nut "B+" Tighten terminal nut "B+" on the 12 volt alternator to the following torque: ... 3.5 0.9 N m (31 8 lb in) Tighten terminal nut "B+" on the 24 volt alternator to the following torque: ... 7.75 0.25 N m (69 2 lb in) (5) Tighten terminal nut "B-" on the 24 volt alternator to the following torque: ... 3.6 0.8 N m (32 7 lb in)Alignment of the alternator pulley to the crankshaft pulley ... 2.40 mm (0.095 inch)