C11 and C13 Petroleum Engines Caterpillar

Illustration 1	g01449459

Illustration 2	g01449176

Voltage ... 12 V

Amperage ... 145 Amp

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 ... Clockwise

Minimum full load current at 5000 rpm ... 137 Amp

Minimum full load current at 2000 rpm ... 75 Amp

Output voltage ... 14.0 ± 0.5 V

(1) Final installation torque for the locknut ... 102 ± 7 N·m (75 ± 5 lb ft)

(2) (B+) terminal. Final installation torque for the nut ... 11.3 ± 2.3 N·m (100 ± 20 lb in)

(3) Voltage regulator assembly

Voltage setting ... No adjustment

Permissible voltage range ... 27 to 29 V

(4) (B-) terminal. Final installation torque for the bolt ... 6.2 ± 0.6 N·m (55 ± 5 lb in)