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Serpentine belt tensioner

Tiny
DAVE MIHELCIC
  • MEMBER
  • 2016 HYUNDAI ELANTRA
  • 1.8L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 60,000 MILES
I have an automotive belt tension part number 252812E300. I can't seem to get the belt off. Do I need to remove tensioner? I have 14mm bolt loose but it wont come off. Is in the torx bolt in the middle? Which size?
Monday, June 1st, 2020 AT 9:25 AM

14 Replies

Tiny
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Good evening,

Can I have the VIN number of the car? There is a difference in the motors built here in the USA and Japan.

Roy
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Monday, June 1st, 2020 AT 3:48 PM
Tiny
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Sure thing. 5NPDH4AE5GH730687 Thanks!
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Monday, June 1st, 2020 AT 4:45 PM
Tiny
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Thank you.

The tension for the belt is adjusted at the alternator itself.

I attached a picture for you to view.

Which pulley are you referring to so I can help.

Can you upload a picture of what you are looking at?

Roy
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Monday, June 1st, 2020 AT 4:52 PM
Tiny
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Roy, there is no adjuster at the alternator. There is a tensioner mounted on the timing cover near the back. It effectively "traps" the serpentine belt. I have been able to release the tension and pull the alternator, but cant remove the belt without getting the tensioner off. It has part number 25281-2E300 stamped on it. Here are pics. I assume I need to get the torx bolt loose in the middle but not sure and don't want to mess it up.
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Monday, June 1st, 2020 AT 5:26 PM
Tiny
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I found this picture online that seems to be pretty close to this setup.
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Monday, June 1st, 2020 AT 5:27 PM
Tiny
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And this:
https://www.hyundaipartsdeal.com/genuine/hyundai-tensioner-assy 25281-2e300.html?Vin=5NPDH4AE5GH730687&Filter=()
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Monday, June 1st, 2020 AT 5:51 PM
Tiny
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Okay, yes, they are torx. It looks like a 35 or 40 torx.

You can go to a parts store and get a cheap set of the sockets. They run around 15 bucks and have about 8 different size sockets for removing that bolt.

Roy
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Monday, June 1st, 2020 AT 6:32 PM
Tiny
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Roy, thanks. Will let you know how it works. I'm pulling the engine apart to replace the head gasket.
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Monday, June 1st, 2020 AT 7:17 PM
Tiny
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You are welcome.

Always glad to help.

Roy
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Tuesday, June 2nd, 2020 AT 4:03 AM
Tiny
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Roy, it is a T-50 but no joy in getting loose. Socket wrench, air ratchet, and even a breaker bar have failed. Any thoughts you have would be appreciated. I may just proceed and see if I can get the timing cover off with this baby still attached.
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Tuesday, June 2nd, 2020 AT 2:21 PM
Tiny
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I must be missing something. It can't be this hard to get a serpentine belt off.
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Tuesday, June 2nd, 2020 AT 2:22 PM
Tiny
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If you are releasing the belt, the picture you sent me of your system shows a wrench on the tensioner. By moving that wrench, that will release the tension on the belt for removing it.

The 50 torx bolt is for removing the tensioner assembly, not releasing the belt.

As far as releasing the bolt, it is torqued to around 100 pounds and does need to be removed for your procedure.

Roy
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Wednesday, June 3rd, 2020 AT 3:54 AM
Tiny
JOHN LUCAS
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My set up looks the same as the picture. However there is only about an inch of clearance to fit a tool so a socket would not be accessible. Is the pictured wrench available for purchase?
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Wednesday, July 1st, 2020 AT 3:25 PM
Tiny
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Yes, most tool manufacturers make those wrenches. They are long box wrenches and the end is offset.

Snap on, craftsman, Mac and Cornwell all make those wrenches.

https://www.amazon.com/TEKTON-45-Degree-Offset-Wrench-WBE24316/dp/B07791KWLL

Roy
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Wednesday, July 1st, 2020 AT 3:35 PM

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