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Old 03-20-2023, 07:32 PM   #1
rodrigogar
 
Drives: 07 Yaris Sedan S
Join Date: Nov 2009
Location: Fort Lauderdale, FL
Posts: 12
New Denso alternator hinge nut positioning

TLDR; how to move the denso alternator hinge nut so alternator doesn’t make sounds/sits more snug on mounting arm.


Hello all.

Time came to replace my 2007 alternator after almost 16 years.

I went to densoautoparts.com, put my vin, got the alternator model and it showed densoproducts.com as a vendor (they are not denso, but carry parts).

They only had a remanufactured, 12 month warranty, and bought it. It was cheaper than getting the same denso from Toyota.

To take the old denso alternator out I had to wiggle it, and the new one with no issues to put in, no friction.

All went well, but now I hear a noise when driving/accelerating/revving.

Removed it again, compared to the old one, and noticed that the bottom nut on the old alternator protruded to the inside, allowing it to be more secured to the mounting point in the engine, on the new one this nut is flush and found out this creates the noise due to vibration, even when I tighten it well.

Question is, how can I move this nut? I tried putting a screwdriver through and hitting the screwdriver with a hammer, didn’t move and messed up the screwdriver a bit. However, I have no other tools other than my 99-piece (I think) Home Depot husky toolbox.

Attached are pictures for reference on the nut.



Last edited by rodrigogar; 03-20-2023 at 09:33 PM. Reason: Picture not loaded, context
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Old 03-20-2023, 09:16 PM   #2
sh0rtlife
 
Drives: 2007 5dr canadian import
Join Date: Dec 2016
Location: pacific north WET
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its "press/slide" fit IE if its loose..it will tighten as you tighten the unit down...if its too tight put the bolt in and smack the bolt a few times to knock the nut away some

common practice on this style of mount
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Old 03-20-2023, 09:21 PM   #3
rodrigogar
 
Drives: 07 Yaris Sedan S
Join Date: Nov 2009
Location: Fort Lauderdale, FL
Posts: 12
Quote:
Originally Posted by sh0rtlife View Post
its "press/slide" fit IE if its loose..it will tighten as you tighten the unit down...if its too tight put the bolt in and smack the bolt a few times to knock the nut away some

common practice on this style of mount
thank you sh0rtlife. Investing in a torque wrench, perhaps making sure the torque is the toyota value might make this move accordingly.
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Old 03-20-2023, 11:37 PM   #4
sh0rtlife
 
Drives: 2007 5dr canadian import
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Location: pacific north WET
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correct torque here is not all that important to be honest
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Old 03-21-2023, 05:38 PM   #5
rodrigogar
 
Drives: 07 Yaris Sedan S
Join Date: Nov 2009
Location: Fort Lauderdale, FL
Posts: 12
Quote:
Originally Posted by sh0rtlife View Post
correct torque here is not all that important to be honest
Thank you again. Will try to tighten a bit more then. See if it starts to move
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