C27 and C32 Industrial and Petroleum Engines Caterpillar

Illustration 1	g01616214

Voltage ... 12 V

Amperage ... 85 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 ... Either direction

Minimum full load current at 5000 rpm ... 77 Amp

Minimum full load current at 1500 rpm ... 85 Amp

Output voltage ... 14.0 ± 0.5 V

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

(2) (B+) terminal. Final installation torque for the screw ... 13.5 ± 1.3 N·m (120 ± 11 lb in)

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

(4) The peak voltage for (R) terminal must not be less than the output voltage for (B+) terminal.

Voltage regulator assembly

Voltage setting ... No adjustment

Permissible voltage range ... 13.5 to 14.5 V