How many bolts do you need to replace an alternator?
Our model required the removal of three bolts: one at the front and two at the rear. With the old alternator in your hand you’re half way home. You’ll likely find getting the new one back in goes much faster since you already know what size the bolt heads are and where everything is.
How can I tell if my alternator has an auto tensioner?
You can tell if your vehicle uses an auto-tensioner by looking at the alternator mounting bracket: if the bolts can slide from side to side in the bracket, it does not have an auto-tensioner. You will need to slide the belt off the alternator pulley before you release the auto-tensioner.
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.
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 can I tell if I need to replace my alternator?
Once the electrical connections, drive belt and any interference items are inspected, disconnected and removed, the old alternator can be unbolted from the engine and mounting brackets. Match it Up! Compare the old alternator to the replacement alternator.
Can a manual tensioner be used to replace an alternator?
The belt tensioner will only travel (swing) so far which can make installing the belt difficult. Never pry or force the belt onto the pulley. Vehicles with a manual tensioner or the belt tightens with the alternator, there should about ½ inch of deflection in the belt between the pulleys with the greatest distance between them. 7
What does it mean when alternator reading stays the same?
If the reading stays the same or drops, that means the alternator isn’t charging and you may need a new one. If the reading is more than 2 volts higher, that could mean that your alternator is overcharging. Either way, take your car to an auto repair shop to find out what’s wrong.
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.