How big of a socket do you need for an alternator?
These will often require a 14mm or 1⁄2 inch (1.3 cm) socket, though you may need to try others. As you loosen the bolts, the alternator will slide in the bracket under the tension of the belt. You may not need to remove the serpentine or accessory belt if it’s not damaged. Inspect the serpentine belt for damage.
How do you change the alternator on a car?
Changing the alternator on most cars is generally the same. Find the alternator (has to be connected to the serpentine belt), and then look up steps to replace it. The main difference in cars is where the alternator is and how it’s mounted.
How do you replace an alternator on a Volvo 240?
Replacing the alternator yourself on a Volvo 240 is a relatively easy job which can save you substantial labor costs. Working on a cold engine, disconnect the negative battery cable, then disconnect the electrical leads to the alternator. Loosen the alternator adjusting bolts and position the alternator so that the drive belt may be removed.
What kind of wrench do you need to replace an alternator?
Unscrew the bolt holding it in place and pull it from where it’s connected. The bolts will likely require standard sized sockets or wrenches in American made vehicles, and metric in most foreign applications. The only other cable running to the alternator connects to a harness, so it will be easy to identify.
What should the voltage be to replace an alternator?
Reconnect the negative battery terminal. Attach the voltmeter to the battery and start the vehicle. Check for proper voltage, indicated by the alternator output read between 13.1 to 16.5 volts. If everything checks out, your alternator replacement job is complete.
What should I do if my alternator is hot?
Really! First and most importantly: disconnect the battery. There may be several wires or just one wire on your alternator, but rest assured that one of them is hot. If you don’t disconnect the battery, you’re very likely to end up grounding a live wire during the process.
How do you install a new alternator in a car?
Installing the New Alternator Slide the new alternator into place. You might have to wiggle the alternator around to squeeze it back into place in a crowded engine bay. Insert the mounting bolts. Slide the mounting bolts through the alternator and into the mounting bracket. Run the belt over the new alternator pulley.
How do I loosen the bolts on my alternator?
Loosen the bolts on the alternator if there is no auto-tensioner. In cars without an auto-tensioner pulley, you can relieve the tension on the belt simply by loosening the two bolts that secure the alternator to the engine. These will often require a 14mm or 1⁄2 inch (1.3 cm) socket, though you may need to try others.