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Old 10-07-2010, 03:48 PM   Thread Starter #1
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Default How to Remove & Replace Your Alternator

Here is the order in which you will want to remove this alternator.

1. Disconnect the battery
2. Remove the engine undercover
3. Remove the radiator (instructions below)
4. Remove your drive belt (instructions below)
5. Remove your enigne idler pulley
6. Disconnect the alternator wires
7. Remove the alternator adjustable top mount
8. Remove alternator lower bracket
9. Slide the alternator out, you should have plenty of room
Click the image to open in full size.

Radiator Removal
1. Drain coolant from radiator
2. Disconnect your upper and lower radiator hoses.
3. Remove your transmission cooler lines from the radiator and plug the lines.
4. Disconnect the reservior tank hose
5. Remove the radiator mounting brackets
6. Remove the radiator and radiator fan assembly

Drive Belt Removal
1. Drive belt tension is relieved by using a wrench or ratchet and socket to turn tensioner bolt, see tensioner location in picture.
Click the image to open in full size.

Follow the reverse procedure for installing your new alternator and putting everything back in place.
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Old 10-07-2010, 03:54 PM   Thread Starter #2
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Default Re: How to Remove & Replace Your Alternator

sheabnyc stated he replaces his alternator without taking out the radiator. So its possible but might be really agressive in removing it.

The suggested way is to remove the radiator as detailed by the Nissan Procedure above.
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Old 04-26-2012, 02:08 PM   #3
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Default Re: How to Remove & Replace Your Alternator

You can do it without removing the radiator . A few radiator support bolts have to be removed to get enough clearance to take it out from the top .
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Old 04-27-2012, 04:31 PM   #4
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Default Re: How to Remove & Replace Your Alternator

I never remove the radiator to remove the alternator. I twist the alternator sideways and it comes right up. Also pro-tip is to remove the compressor bolts and move the compressor down a bit so you can have easier access to the long alternator bolt. Its much much easier that way
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Old 05-01-2012, 03:17 PM   #5
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Default Re: How to Remove & Replace Your Alternator

I dont remove the radiator, the fans yes and dont have to remove the compressor lines, i did put aside the compressor for the FUC#%^& rear bolt, and my advise, if your a newb dont even try it, its at least a 3 to 5 hours job.
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Old 09-07-2012, 02:02 AM   #6
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Default Re: How to Remove & Replace Your Alternator

Originally Posted by Safiloo1 View Post
I dont remove the radiator, the fans yes and dont have to remove the compressor lines, i did put aside the compressor for the FUC#%^& rear bolt, and my advise, if your a newb dont even try it, its at least a 3 to 5 hours job.
So if I haven't done it before, don't try to remove the alternator or the compressor?
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Old 09-07-2012, 09:47 AM   #7
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Default Re: How to Remove & Replace Your Alternator

Originally Posted by spiritman View Post
So if I haven't done it before, don't try to remove the alternator or the compressor?
He is suggesting you might want to take it to a shop. If you are motivated, and trying to save money, you can do it yourself.
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Old 09-08-2012, 02:02 PM   #8
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Default Re: How to Remove & Replace Your Alternator

Originally Posted by BurntOrangeAppeal View Post
He is suggesting you might want to take it to a shop. If you are motivated, and trying to save money, you can do it yourself.
I plan on getting a high output alternator so I'm motivated. However, I would like a definitive list of the tools required to DIY this.
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Old 09-08-2012, 04:44 PM   #9
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Default Re: How to Remove & Replace Your Alternator

For me I just remove the compressor and voila Alternator comes out. It's easier that way, and its a 1 - 2 hour job.
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Old 05-20-2013, 11:18 PM   #10
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Default Re: How to Remove & Replace Your Alternator

First time doing this on my Maxima.I've changed alternators on my other vehicles, but never had to work in this tight of an area before. Thanks for the insight.
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Old 05-22-2013, 01:09 PM   #11
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Default Re: How to Remove & Replace Your Alternator

Originally Posted by reklews View Post
First time doing this on my Maxima.I've changed alternators on my other vehicles, but never had to work in this tight of an area before. Thanks for the insight.
Tell us how it goes and throw in any tips/pics that might help others out.
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Old 05-22-2013, 07:00 PM   #12
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Default Re: How to Remove & Replace Your Alternator

I remove the fans and radiator. Better safe than sorry. Might bang into the radiator and now you gotta replace that too. Whats an extra 5 minutes and a $13 of prestone 50/50 really worth besides the $13?
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Old 06-24-2013, 10:18 PM   #13
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Default Re: How to Remove & Replace Your Alternator

So just did this job the other weekend and thought I would throw in my two cents. I did not remove the radiator, nor did I use the drop the compressor method.

I removed the electric fans. I could get to everything with basic tools, including the lower alternator bolt. If I remember correctly I wormed my hand in from the top.
The alternator came forward, then alongside the radiator, and out the top where the fan used to be.
The problem came when I went to put that bottom bolt back in. What I ended up doing was using a pair of the heavy duty mechanical fingers from northern tools. They had a probably two foot flexible neck on them. I grabbed the head of the bolt with them and went in above the exhaust. This got it to the hole and I had a partner jiggle the alternator while I slipped it in.

OH! also in case you haven't done an alternator before take a look at the bushing where the top bolt goes through. It may be pushed out a little too far to fit in the slot. In case it is, just pound it back in a little bit and you should have the clearance to slide it in.

It may be easier to do it the other way but mine was an emergency fix the day before work so speed was of the essence

Total time on the job was probably 1.5 to 2 hours. It wasn't that bad at all.
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Old 06-25-2013, 12:20 AM   #14
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Default Re: How to Remove & Replace Your Alternator

Originally Posted by maxlover View Post
So just did this job the other weekend and thought I would throw in my two cents. I did not remove the radiator, nor did I use the drop the compressor method.

I removed the electric fans. I could get to everything with basic tools, including the lower alternator bolt. If I remember correctly I wormed my hand in from the top.
The alternator came forward, then alongside the radiator, and out the top where the fan used to be.
The problem came when I went to put that bottom bolt back in. What I ended up doing was using a pair of the heavy duty mechanical fingers from northern tools. They had a probably two foot flexible neck on them. I grabbed the head of the bolt with them and went in above the exhaust. This got it to the hole and I had a partner jiggle the alternator while I slipped it in.

OH! also in case you haven't done an alternator before take a look at the bushing where the top bolt goes through. It may be pushed out a little too far to fit in the slot. In case it is, just pound it back in a little bit and you should have the clearance to slide it in.

It may be easier to do it the other way but mine was an emergency fix the day before work so speed was of the essence

Total time on the job was probably 1.5 to 2 hours. It wasn't that bad at all.
Thats a good time. This R&R pays 1.5 points, in essence @2 hrs, you would loose .5 of a point in pay....thats why I do it from the bottom. Its much quicker and easier this way for me, although im lucky and I get to stand under the hoist instead of bending over and hurting my back which has already been abused too much. (No funny jokes...)
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Old 06-25-2013, 12:28 AM   #15
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Default Re: How to Remove & Replace Your Alternator

ya a lift surely would have come in handy, but for a bumbling mechanic like me with a floor jack I was glad to have it done so quickly.
I'm sure that it would be smoother the second time around since I wouldn't have to decide how I was going about it.
As a side note do you guys ever use those creepers? I always feel like I would rather just be on the ground.
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Old 06-25-2013, 12:39 AM   #16
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Default Re: How to Remove & Replace Your Alternator

Originally Posted by maxlover View Post
ya a lift surely would have come in handy, but for a bumbling mechanic like me with a floor jack I was glad to have it done so quickly.
I'm sure that it would be smoother the second time around since I wouldn't have to decide how I was going about it.
As a side note do you guys ever use those creepers? I always feel like I would rather just be on the ground.
At home is a pair of padded garage foam mats that interlock. No creeper. The only time I use a creeper when I do inspections under big trucks and I need to roll and inspect.
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