3406E Truck Engine Caterpillar


Alternator and Regulator

Usage:

3406E 1LW



Illustration 1g00297598

121-4134 Alternator

Voltage rating ... 12 V

Voltage setting ... No Adjustment

Note: Load the battery with a carbon pile 4C-4911 Battery Load Tester in order to get the maximum alternator output.

Polarity ... Negative Ground

Rotation ... Either direction

Minimum full load current at 5000 rpm ... 107 Amp

Minimum full load current at 1500 rpm ... 45 Amp

Output voltage ... 14.0 ± .5 V

(1) Tighten the shaft nut to the following torque. ... 102 ± 7 N·m (75 ± 5 lb ft)

(2) Tighten the positive terminal nut to the following torque. ... 11.3 ± 2.3 N·m (100 ± 20 lb in)

(3) Tighten the negative terminal nut to the following torque. ... 6.2 ± 0.6 N·m (55 ± 5 lb in)

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