6-Series and AT-Series Alternators feature dual internal cooling fans, and are designed to provide maximum cooling protection when rotated in a clockwise rotation (looking at the front of the alternator when mounted on engine). Using 6-Series or AT-Series Alternators in reverse(counter-clockwise) rotation applications may affect alternator cooling and performance. Large case 94, 95, 97, 97EHD and 98-Series Alternators feature bi-directional fans, which are equally effective in normal or reverse rotation applications.
Extra large case 97-Series Alternators provide outputs of 160 amps at 12 volts, or 140 amps at 24 volts. 4”ID J-180 saddle mount. Alternators feature isolated ground terminals, external regulation and 16-pole stator output. Models with a BL indicates brushless rotor/ stator combination that reduces alternator noise, and eliminates key wear points.
1. Positive Output Terminal - Must be connected via properly-sized cable to the battery or batteries being charged. Cable size is determined by alternatoroutput and length of cable run. See Page 3.
2. Negative Terminal (Ground) - Must be connected to system ground via properly sized cable. Cable size is determined by alternator output and length of cable run. See Page 3.
3. Stator Output - Can be used as a signal for an electric tachometer. In 12-volt systems, stator terminal will connect to WHITE wire. In 24-volt systems, the Stator Wire will connect to the ORANGE wire in the regulator wiring harness.
4. External Field Terminal - Connects to external voltage regulator via wiring harness.
An unsupported cable may damage the positive or negative terminals, resulting in damage to alternator, regulator and wiring. Ensure that cables are adequately supported to supply strain relief.