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The 12v Subaru auto alternator is used to generate electricity for the electrical parts of a vehicle. The alternator can be categorized based on size, construction, and rotor design.
Subaru alternator by size
The 12v Subaru auto alternators come in different sizes that vary in output capacity. The output of the alternator must match the power requirements of the Subaru electrical system. The Subaru BRZ has a larger alternator because the engine produces more power. The larger alternator can generate more current to support the high-performance electrical system. Subaru vehicles with added features like navigation systems and heated seats require alternators with higher output.
Subaru alternator by construction
Alternators can be classified into two main types based on their rotor design. The 12v Subaru auto alternator uses a wound rotor design. The rotor has windings instead of permanent magnets. The windings create a magnetic field when current passes through. The 12v Subaru auto alternator with a wound rotor is more efficient and provides stable current output.
Subaru alternator by rotor design
The 12v Subaru auto alternators use a radial rotor design. The rotor has radial arms that extend from the center of the rotor to the outer edge. The arms create a radial magnetic field that generates current when the rotor spins in the magnetic field. The radial rotor design is suitable for applications that require high torque and low-speed operation. The 12v Subaru auto alternators with radial rotor designs are more robust and suitable for heavy-duty applications.
Voltage Output
The alternator produces a current of 12 volts that is constant to power the electrical components of the vehicle and keep the battery charged.
Current Output
Subaru alternators differ in the amount of current they produce. The current output usually ranges from 60 to 120 amps. This current output is what powers the electrical components of the vehicle and keeps the battery charged.
Physical Size and Mounting
Subaru alternators come in different physical sizes. The alternator's physical size determines the mounting method and available space for installation. The alternator features a mounting method that is compatible with the engine.
Cooling Method
The alternator uses air cooling or is water-cooled based on the model. If the alternator uses air cooling, it will have cooling fins and a fan.
Voltage Regulation
The alternator has an in-built voltage regulator that maintains constant voltage output, regardless of changes in engine speed or electrical load.
Wiring and Connectors
The alternator features wiring and connectors compatible with the vehicle's electrical system. The main output terminal connects the alternator to the battery. Other terminals connect the alternator to the electrical system.
Frequency
Most Subaru models have an alternator with a frequency of 50-60Hz. The frequency is constant regardless of the speed of the alternator.
Below are some tips on how to maintain the Subaru alternator.
Picking the right Subaru alternator is crucial for meeting the power requirements of any given vehicle. It is important to consider the following factors:
Replacing an alternator can be a DIY-friendly project. A 12-volt Subaru alternator is easy to install. Before starting, ensure all the Subaru alternator connection diagrams are in place. Also, ensure that all the Subaru alternator belt routing diagrams are available. Here are the steps to follow when replacing the alternator:
Firstly, collect all the necessary tools for the job. A mechanic will need a ratchet set, hand tools, and a torque wrench. It is also advisable to have the Subaru repair manual. The manual provides information on the specific model disassembly procedures.
Disconnect the negative battery cable before starting the work. This prevents any electrical shorts or damage to the battery during the alternator replacement.
Remove the Subaru alternator belt from the alternator.
Unbolt the alternator from the mounting and disconnect all the Subaru alternator electrical connections.
Now, install the new alternator by connecting the electrical connections and securing it to the mounting. Follow the Subaru alternator belt routing diagram to avoid mistakes.
Reconnect the alternator belt and the negative battery cable. Start the engine to ensure that the new alternator is functioning properly.
Recheck all the work done and ensure there are no loose ends. This is important to avoid future problems with the alternator.
With these simple steps, replacing a Subaru alternator can be a DIY-friendly project. Ensure to follow the procedures carefully for a successful replacement.
Q1: Can a Subaru alternator be used on any vehicle?
A1: No! Alternators are designed specifically for a particular make and model of vehicles. The Subaru alternators are designed for use in Subaru vehicles. However, it might be used in other vehicles of the same make, provided it has not been modified.
Q2: Is it okay to use a refurbished alternator?
A2: Yes! A refurbished alternator can be used. However, it is important to ensure that it is in good condition with no defects and that it has been properly refurbished.
Q3: Can the alternator be upgraded to get more power?
A3: Yes! The alternator can be upgraded to get more power. This is particularly important for vehicles that have upgraded the sound system or have other electrical components that require more power. However, the upgraded alternator should be compatible with the Subaru 12v electrical system.
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