How do you replace an alternator on a 1999 Lumina?
Remove the nut on the “B” terminal, the stud on the back of the alternator, with a wrench. Slide the red wire with the ring connector off the stud and lay it aside. Remove the front and rear mounting bolts from the alternator with a socket and ratchet. Three bolts hold the alternator in the car. Lift the alternator out of the engine compartment.
How do you install an alternator in a car?
Remove the front and rear mounting bolts from the alternator with a socket and ratchet. Three bolts hold the alternator in the car. Lift the alternator out of the engine compartment. Position the new alternator on the mounting brackets and install the three mounting bolts.
How to replace an alternator on a 1995 GMC?
Somewhere on your vehicle there is a tensioner pulley. You’ll need to move it enough to slip the belt off the pulley. Our ’95 GMC has a standard spring-loaded GM tensioner that required us to pull it back with a wrench.
How do you remove a battery from an alternator?
Isolate the cable from the battery while you are working. Locate the serpentine belt tensioner on the front of the engine. Use a socket and ratchet to rotate the tensioner counterclockwise to loosen it then remove the belt from the alternator pulley. Locate the wiring harness connections on the back of the alternator.
What do you need to change an alternator?
Remove the main power cable from the alternator. The main power cable will be the thick cable attached to the alternator that runs from the battery. Depending on how much space you have in your specific vehicle, you may be able to use a ratchet, but in some, you may only be able to fit an open-ended wrench.
Do you need to remove serpentine belt to change alternator?
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.
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.
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