C9 Industrial Engines Caterpillar

Illustration 1	g01255445

Voltage ... 12 V

Amperage ... 130 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 of the alternator pulley from the pulley end ... clockwise

The minimum full load current at 5000 rpm is the following value. ... 119 Amp

The minimum full load current at 1500 rpm is the following value. ... 41 Amp

Output voltage ... 14 ± .5 V

To obtain 1/3 of the rated output current at low engine idle, the alternator speed should be the following value: ... 1500 RPM

(1) Shaft nut

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

(2) Terminal nut

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

(3) Terminal bolt

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