Belt Size Requirements
Your Balmar alternator demands more horsepower than your standard OEM alternator. This additional load may require that you replace the standard drive belt with a heavier-duty unit. Many aftermarket belt manufacturers supply premium quality belts, designed specifically for heavy-duty marine and industrial applications. Among these are the Green Stripe belt by Gates and the Top Cog belt from Dayco. In addition, many auto parts suppliers, such as NAPA, carry extra heavy-duty belts designed to support larger horsepower loads. As a rule-of-thumb, we recommend a minimum 3/8" belt (measured across the back of the belt) for our 80-amp (12-volt) alternators. Minimum belt width for 100-amp alternators is 1/2". Any 12-volt alternator larger than 100-amps or 24-volt Balmar alternator will require dual belts or a flat, multi-groove belt for optimal performance, as well as acceptable belt life.94LY-Series Alternators
Large case 94-Series Alternators are designed to provide 165 or 210 amps at 12 volts, or 140 amps at 24 volts. Mounting is a 2"single-foot Delco-style mount. Alternators in the 94-Series feature isolated ground terminals, external regulation and 12-pole stator output.
1. Positive Output Terminal - Must be connected via properlysized cable to the battery or batteries being charged. Cable size is determined by alternator output and length of cable run. See Page 3 for wiring size chart.
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 for wiring size chart.
3. Stator Output - Unrectified source of AC voltage which 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 Wire (BLUE) - 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.