C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Serpentine belt alignment

Thread Tools
 
Search this Thread
 
Old Feb 24, 2025 | 07:44 PM
  #1  
Johnnyv49's Avatar
Johnnyv49
Thread Starter
Advanced
 
Joined: Jan 2025
Posts: 68
Likes: 2
Default Serpentine belt alignment

So I got stuck on my last trip because the power steering pulley came off. I had it fixed while on the road and they replaced the pulley. Unfortunately I didn't have to many options.

Today I noticed that the tensioner pulley and the lower pulley are not aligned to the rest. The belt is moving out 1 rib. Can this be adjusted? But the decoupler pulley doesn't seem to be making noise. Is there any adjustment on the tensioner pulley?

Reply
Old Feb 24, 2025 | 09:18 PM
  #2  
jcgunn's Avatar
jcgunn
Melting Slicks
20 Year Member
Veteran: Air Force
Liked
Community Favorite
 
Joined: Mar 2004
Posts: 2,411
Likes: 412
From: Horseshoe Bend ID
Default

Okay, so that engine compartment is a mess. Lots of rust and corrosion. Remove all of the belts/hoses, see what needs to be replaced and and go from there.
Reply
Old Feb 24, 2025 | 11:22 PM
  #3  
Simtech's Avatar
Simtech
Racer
10 Year Member
All Eyes On Me
Liked
Top Answer: 1
 
Joined: Jul 2011
Posts: 462
Likes: 123
From: Ozark Alabama
Default

Almost looks like you could just push the tensioner toward the center of the engine( un-tension it) and put the belt back on.
Reply
Old Feb 25, 2025 | 08:29 AM
  #4  
the_merv's Avatar
the_merv
Melting Slicks
Veteran: Air Force
Community Builder
Community Influencer
Community Favorite
 
Joined: Feb 2025
Posts: 2,114
Likes: 2,029
From: THE BEACH..
Default

If the Crank Pulley is pulling the Belt forward off of that Tensioner consistently and the Belt is staying on the Crank Pulley completely it's a good possibility that it's about to come apart.

I'd be looking at that really close..
Reply
Old Feb 25, 2025 | 10:58 AM
  #5  
Johnnyv49's Avatar
Johnnyv49
Thread Starter
Advanced
 
Joined: Jan 2025
Posts: 68
Likes: 2
Default

So the car has been sitting for a long time and what I am doing is taking each thing and cleaning it and replacing anything that is needed. Plus it just came off a long drive and because I broke down unfortunately I got caught in some snow. So it's still a mess and lot of that might be salt from the other day. That is today's project to clean everything.

When they did the power steering pulley, they did a full flush and check on the cooling system, the ABS system and brake lines, and power steering pump and lines. As far as the belt goes I never had this issue until they replaced the power steering pulley. It has never done this before. If I put the belt back on as soon as I start the car it moves to the outside edge of the tensioner. I can't understand what they did as far as replacing the power steering pulley. The car was running while they checked everything before they gave it back to me so I'm not exactly sure how the hell they missed this. The decoupler on the alternator used to make noise, and it was suggested by another member on the forum that it was alignment. Now the sound seems to be gone. But the other side is out of alignment.

Is there any horizontal adjustment on that tensioner pulley? How do you align everything? The only thing I have ever had to do was change the belts which I did pretty frequently.



Reply
Old Feb 25, 2025 | 11:02 AM
  #6  
the_merv's Avatar
the_merv
Melting Slicks
Veteran: Air Force
Community Builder
Community Influencer
Community Favorite
 
Joined: Feb 2025
Posts: 2,114
Likes: 2,029
From: THE BEACH..
Default

If the Power Steering Pulley was the only thing changed then the put the wrong one on.

There are all kinds of them out there shaped differently. Flat, beveled, etc. The wrong one was put on that car.
Reply
Old Feb 25, 2025 | 01:00 PM
  #7  
Johnnyv49's Avatar
Johnnyv49
Thread Starter
Advanced
 
Joined: Jan 2025
Posts: 68
Likes: 2
Default

Originally Posted by the_merv
If the Power Steering Pulley was the only thing changed then the put the wrong one on.

There are all kinds of them out there shaped differently. Flat, beveled, etc. The wrong one was put on that car.
This is the pully they replaced it with. It pulls up as OEM replacement.

ACDelco Power Steering Pulleys 12559890




Reply
Old Feb 25, 2025 | 01:31 PM
  #8  
the_merv's Avatar
the_merv
Melting Slicks
Veteran: Air Force
Community Builder
Community Influencer
Community Favorite
 
Joined: Feb 2025
Posts: 2,114
Likes: 2,029
From: THE BEACH..
Default

If its the correct one then it's not pressed on all the way. Something is pulling the Belt outward.

How does the Belt look on the Water Pump?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Feb 26, 2025 | 11:49 AM
  #9  
Johnnyv49's Avatar
Johnnyv49
Thread Starter
Advanced
 
Joined: Jan 2025
Posts: 68
Likes: 2
Default

Well it's a little hard to see but the belt is sitting farther out than it originally was. What I don't understand is the sound coming out of the decoupler pulley is gone so I can only assume it was the power steering that was causing it. But as of now that belt is definitely farther out. My guess is it needs to be pressed on more. The face of the pullies are all on the same plane And that's probably how they aligned it rather than by the slots on the pulley.





Reply
Old Feb 26, 2025 | 12:02 PM
  #10  
the_merv's Avatar
the_merv
Melting Slicks
Veteran: Air Force
Community Builder
Community Influencer
Community Favorite
 
Joined: Feb 2025
Posts: 2,114
Likes: 2,029
From: THE BEACH..
Default

Yup that PS Pulley isn't on all the way. Take it to whoever did it and make them do it right.
Reply
Old Feb 26, 2025 | 09:16 PM
  #11  
Johnnyv49's Avatar
Johnnyv49
Thread Starter
Advanced
 
Joined: Jan 2025
Posts: 68
Likes: 2
Default

Thanks...now I've got to figure it out with AAA. Being the place that did it is 6 hours away. They said that they had to remove the radiator and abs to get that on. I guess I've got to have it towed AGAIN to a local AAA Shop.

You think they would have seen it when it was running. I guess I got lucky again because I drove that home..


Last edited by Johnnyv49; Feb 26, 2025 at 09:24 PM.
Reply
Old Feb 26, 2025 | 09:58 PM
  #12  
the_merv's Avatar
the_merv
Melting Slicks
Veteran: Air Force
Community Builder
Community Influencer
Community Favorite
 
Joined: Feb 2025
Posts: 2,114
Likes: 2,029
From: THE BEACH..
Default

Yup it's definitely in a tight spot. Regardless they need to do it right.
Reply
Old Feb 27, 2025 | 12:12 PM
  #13  
helga203's Avatar
helga203
Le Mans Master
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2010
Posts: 6,013
Likes: 726
Default

Originally Posted by Johnnyv49
Thanks...now I've got to figure it out with AAA. Being the place that did it is 6 hours away. They said that they had to remove the radiator and abs to get that on. I guess I've got to have it towed AGAIN to a local AAA Shop.

You think they would have seen it when it was running. I guess I got lucky again because I drove that home..
would it be cheaper to have a local shop do it?? Dont know how much AAA will charge you. If its a wash or close to towing fees.
Reply
Old Mar 2, 2025 | 02:06 PM
  #14  
Johnnyv49's Avatar
Johnnyv49
Thread Starter
Advanced
 
Joined: Jan 2025
Posts: 68
Likes: 2
Default

Well it was a AAA Certified shop that fixed it when I got stuck. I was 250 miles from home. So now I have to take it to a AAA Certified shop here so they honor the warranty. They would have cover everything including this tow. Closest certified shop is 25 mi away so they're going to have to do something.


Reply
Old Mar 3, 2025 | 07:30 AM
  #15  
lionelhutz's Avatar
lionelhutz
Race Director
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2007
Posts: 11,152
Likes: 890
From: South Western Ontario
Default

Originally Posted by Johnnyv49
The center of your balancer should not be sticking out past the outer ring. They should be flush with each other. Your balancer is bad. Quit worrying about the PS pulley.

It must be completely separated to do this too, so you can't drive it because it either moves forward and damages to rack or backwards and damages the front of the engine.
Reply
Old Mar 3, 2025 | 09:15 PM
  #16  
the_merv's Avatar
the_merv
Melting Slicks
Veteran: Air Force
Community Builder
Community Influencer
Community Favorite
 
Joined: Feb 2025
Posts: 2,114
Likes: 2,029
From: THE BEACH..
Default

Not even that, look where the Belt is even on the Balancer. It should be in the middle of it not on the forward Lip of it.

Belt isn't even installed correctly. I'm just now seeing it because the image loaded in full detail.

I know I'm not the only one seeing it, the whole forward most rib of the Belt is wore off from it being in the wrong spot. Hell you can see that looking at the inside of the Belt when it's wrapped around the Tensioner, should be a dead giveaway something is off. Time for a new Belt and it to be installed correctly.

That's what happens when kids working in a garage work on your cars.
Reply
Old Mar 4, 2025 | 12:43 AM
  #17  
lionelhutz's Avatar
lionelhutz
Race Director
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2007
Posts: 11,152
Likes: 890
From: South Western Ontario
Default

Saw the belt, but just didn't care. The balancer IS the problem. When it walks back and forth it can cause the belt to jump grooves..

Forget worrying about the PS pulley "not installed right" or the belt being off one groove. PS pulley is probably fine and the belt will be fixed when you install a new one after the balancer replacement.
Reply

Get notified of new replies

To Serpentine belt alignment

Old Mar 4, 2025 | 06:04 AM
  #18  
the_merv's Avatar
the_merv
Melting Slicks
Veteran: Air Force
Community Builder
Community Influencer
Community Favorite
 
Joined: Feb 2025
Posts: 2,114
Likes: 2,029
From: THE BEACH..
Default

Why I mentioned it in my first post wouldn't hurt to look at it really close. I see the rubber sticking out but yeah need to get down there and take a look at it.
Reply
Old Mar 4, 2025 | 11:19 AM
  #19  
grinder11's Avatar
grinder11
Race Director
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Oct 2004
Posts: 12,864
Likes: 4,667
Default

OEM C5 balancers suck for durability. Just sayin'
Reply
Old Mar 5, 2025 | 07:51 AM
  #20  
Johnnyv49's Avatar
Johnnyv49
Thread Starter
Advanced
 
Joined: Jan 2025
Posts: 68
Likes: 2
Default

Thanks everyone...that belt was new when I left home. I installed it which I had done many times before no issues. Believe me if I didn't get stuck and had no option I would handle all this myself. I have no idea why but when these guys did the repair they did not replace the belt. I just needed to get myself home to where I could deal with it.

I do have a chirping noise in there which I thought was the decoupler pulley, but after listening to everyone it sounds like it's the HB.

2 QQ:
I have watched some videos on changing the HB out. Just an opinion how hard is this job to do? I consider myself pretty good with engines and doing repairs. I pretty much work on every car I own. Just watching some of the steps to do this I've seen a couple things I probably haven't had my hands in yet. How hard is this to do.

Also should I just change the water pump while I'm in there? Think it is still the original pump.

Last edited by Johnnyv49; Mar 5, 2025 at 08:49 AM.
Reply



All times are GMT -4. The time now is 01:56 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE