ALTERNATOR REPLACEMENT MADE EASY
                     ALTERNATOR REPLACEMENT MADE EASY
Paul Norman Jasper
Writer  whose topics include, 
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and replacement car parts reviews at autopartsu.com
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If your vehicle’s battery warning light is illuminated, it is an indication the 
alternator might require replacement. Thankfully, you can perform this 
replacement on your own in an hour or less. Seize the opportunity to 
perform DIY alternator repair, and you won’t have to pay a single penny for 
overpriced service that takes up a lot of your time. Here’s a quick look at how 
to replace your vehicle’s alternator.
SET THE STAGE FOR SUCCESS
Alternator replacement starts with the proper positioning of your vehicle. 
Park your automobile on flat ground. Turn off the engine. Apply the 
emergency brake. Don gloves and eye protection for optimal safety. Pop the 
hood and locate the alternator, positioned toward the front of the engine. If 
necessary, use a floor jack to raise the vehicle. Be sure to jot down your radio 
station presets so you can re-enter them after replacing the alternator.
REMOVE THE OLD ALTERNATOR
The next step is to loosen and take off the negative cable connected to the 
battery. Move the cable far away from the terminal so you do not mistakenly 
form a connection. Find the belt tensioner. Apply reverse tension against this 
tensioner with a wrench, breaker bar, or socket, ensuring the belt can be 
properly disconnected from the alternator pulley. Take a look at the belt for 
any cracking or glazing. If such wear and tear is present, replace the belt.
Take off the dust boot from the primary power terminal to access the main 
power wire. A socket/wrench will be necessary to remove the nut. Lift the 
primary power cable from the alternator charging terminal. Pull the dust 
boot back to reach the connector safety clip. Pull the connector outward as 
you release the safety clip in order to remove the wire harness. Take off the 
upper mounting bracket and bolt with a wrench/socket. Take off the lower 
mounting bolt, grab the unit, and rock it back and forth while pulling it up to 
release the lower mounting bracket that holds the alternator in position. 
Gently remove the old unit.
CONNECTING THE NEW ALTERNATOR
It will be difficult to install the new alternator unless you force the lower 
mounting bracket and press fit sleeve out for proper accommodation. 
Hammer the sleeve out in order to install the new alternator. Carefully lower 
the new unit down into the bay of the engine without contacting the radiator 
or other nearby components. The next step is to reinstall the lower mounting 
bolt. Add the upper mounting bolt, ensuring it is secured tightly into position. 
Tighten up the lower bolt. Reposition the computer’s wiring harness to 
ensure the voltage is properly monitored and adjusted.
Wipe away all grease, dirt, and other particles before reinstalling the primary 
charge cable along with the mounting nut. Tighten the cable into position, 
attach the weather boot to guard against moisture, and reconnect any 
remaining brackets/hoses removed when taking out the original alternator. 
Finally, reconnect the negative battery cable. However, if you notice a large 
spark forms when installing the end of the cable to the terminal, the 
alternator charge cable must be grounded and subsequently re-checked. The 
last step is the easiest: start the vehicle’s engine to see if the battery warning 
indicator is no longer illuminated. If everything goes according to plan, this 
light will not illuminate, providing you with the reassurance necessary to 
drive your vehicle with full confidence.
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