ATI harmonic balancer install issues....helpful hints?
Thread Starter
Melting Slicks
Joined: Jul 2011
Posts: 2,083
Likes: 68
From: Carrollton GA
W. GA Events Coordinator
St. Jude Donor '12-'13-'14-'15
ATI harmonic balancer install issues....helpful hints?
I purchased an ATI Harmonic Balancer that the dealer can't seem to install. I have confirmed I have the correct part number and sub components.
The problem is once it is installed, neither the AC and main drive pullies will not line up. They are off off by 3 ribs on the belt or appox 1/4 inch. The HB appears to be seated all the way.
The dealer used their "normal" Vette mechanic and when he could do not fix it brought in another from another dealer. The 2nd one had the exact same problem.
So, with all that said, any opinions on why the ATI will not either seat all the way or belts not align? Anyone ever have this happen?
FWIW I have a 2005 C6.
The problem is once it is installed, neither the AC and main drive pullies will not line up. They are off off by 3 ribs on the belt or appox 1/4 inch. The HB appears to be seated all the way.
The dealer used their "normal" Vette mechanic and when he could do not fix it brought in another from another dealer. The 2nd one had the exact same problem.
So, with all that said, any opinions on why the ATI will not either seat all the way or belts not align? Anyone ever have this happen?
FWIW I have a 2005 C6.
Last edited by JKbride; Apr 21, 2014 at 08:08 PM.
Race Director
Joined: Dec 2005
Posts: 11,798
Likes: 106
From: God's Country, ID
Honestly it shouldn't be very difficult for a tech to do the job or figure out why it wont seat all the way.
I've seen the wrong bolt used and bottomed out on the threads before the pulley seated on all the way.
I've seen the wrong bolt used and bottomed out on the threads before the pulley seated on all the way.
Thread Starter
Melting Slicks
Joined: Jul 2011
Posts: 2,083
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From: Carrollton GA
W. GA Events Coordinator
St. Jude Donor '12-'13-'14-'15
Racer
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From: Randallstown, Md.
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Safety Car
Joined: Jan 2004
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From: Pinellas Park Fl
St. Jude Donor '08-'09 & '12, '14
I purchased an ATI Harmonic Balancer that the dealer can't seem to install. I have confirmed I have the correct part number and sub components.
The problem is once it is installed, neither the AC and main drive pullies will not line up. They are off off by 3 ribs on the belt or appox 1/4 inch. The HB appears to be seated all the way.
The dealer used their "normal" Vette mechanic and when he could do not fix it brought in another from another dealer. The 2nd one had the exact same problem.
So, with all that said, any opinions on why the ATI will not either seat all the way or belts not align? Anyone ever have this happen?
FWIW I have a 2005 C6.
The problem is once it is installed, neither the AC and main drive pullies will not line up. They are off off by 3 ribs on the belt or appox 1/4 inch. The HB appears to be seated all the way.
The dealer used their "normal" Vette mechanic and when he could do not fix it brought in another from another dealer. The 2nd one had the exact same problem.
So, with all that said, any opinions on why the ATI will not either seat all the way or belts not align? Anyone ever have this happen?
FWIW I have a 2005 C6.
I know you said you confirmed the pt#, but, these are mine.... just in case
http://www.atiracing.com/instruction...LS7-Damper.pdf
#5. If a rear pulley (i.e. 4 rib A/C) is being used, it must be placed on the back of the hub before the hub is pressed on the crank.
pt#917246
Shell assy #7015CSX
Hub GU32
Pulley G734
Thread Starter
Melting Slicks
Joined: Jul 2011
Posts: 2,083
Likes: 68
From: Carrollton GA
W. GA Events Coordinator
St. Jude Donor '12-'13-'14-'15
Thread Starter
Melting Slicks
Joined: Jul 2011
Posts: 2,083
Likes: 68
From: Carrollton GA
W. GA Events Coordinator
St. Jude Donor '12-'13-'14-'15
Thread Starter
Melting Slicks
Joined: Jul 2011
Posts: 2,083
Likes: 68
From: Carrollton GA
W. GA Events Coordinator
St. Jude Donor '12-'13-'14-'15
Part used is 917246
Outer shell 917016CSX
A/C pulley 916734
Hub Assy 916032-M3
I did not assemble it, but tech said he followed Assy instructions. I looked at it on the car, and it appeared to be correctly assembled. The hub was on correctly (long side of hub toward engine) and appeared to be all the way on.
Last edited by JKbride; Apr 21, 2014 at 09:38 PM.
Thread Starter
Melting Slicks
Joined: Jul 2011
Posts: 2,083
Likes: 68
From: Carrollton GA
W. GA Events Coordinator
St. Jude Donor '12-'13-'14-'15
Well picked up my car today after the failed attempt of installing the ATI HB by the dealer. In the end I ended up with a OEM balancer, which is not what I wanted. Also got the honor of paying an extra $300 in labor for the failed attempt
Somewhat PO'd at the situation. The ATI HB was assembled correctly, and according to two seasoned techs it was seated correctly. I have triple checked all part numbers and the are correct.
At this point throwing up my hands as a mystery that can be grouped with UFO's and Big Foot.
I will soon have a ATI balancer for sale......ugh, smh!
Somewhat PO'd at the situation. The ATI HB was assembled correctly, and according to two seasoned techs it was seated correctly. I have triple checked all part numbers and the are correct.
At this point throwing up my hands as a mystery that can be grouped with UFO's and Big Foot.
I will soon have a ATI balancer for sale......ugh, smh!
Racer
Joined: Jan 2009
Posts: 278
Likes: 14
From: Randallstown, Md.
Well picked up my car today after the failed attempt of installing the ATI HB by the dealer. In the end I ended up with a OEM balancer, which is not what I wanted. Also got the honor of paying an extra $300 in labor for the failed attempt
Somewhat PO'd at the situation. The ATI HB was assembled correctly, and according to two seasoned techs it was seated correctly. I have triple checked all part numbers and the are correct.
At this point throwing up my hands as a mystery that can be grouped with UFO's and Big Foot.
I will soon have a ATI balancer for sale......ugh, smh!
Somewhat PO'd at the situation. The ATI HB was assembled correctly, and according to two seasoned techs it was seated correctly. I have triple checked all part numbers and the are correct.
At this point throwing up my hands as a mystery that can be grouped with UFO's and Big Foot.
I will soon have a ATI balancer for sale......ugh, smh!
Thread Starter
Melting Slicks
Joined: Jul 2011
Posts: 2,083
Likes: 68
From: Carrollton GA
W. GA Events Coordinator
St. Jude Donor '12-'13-'14-'15
To be clear, I'm not saying ATI is at fault, but also can't see where the Techs were either. I do a lot of my own work, and sent to the dealer due to time limitations. I looked at it on the rack and the HB appeared to be seated correctly.
Right part numbers, assembled correctly, seated correctly, both pulleys off by 1/4 inch
Drifting
Joined: Apr 2013
Posts: 1,352
Likes: 8
From: Jupiter Florida
It's the second time in a week that I hear about a GM dealer unable to instal an aftermarket HB on a C6..... (Hi Eric!)
I would have them take that OEM junk out of my car so quickly, they could hardly see it coming. Even if I had to get the car towed to a COMPETENT shop where I'd have the ATI installed.
Mine was put in with no trouble whatsoever. But not by a GM dealer.
Sorry about your ordeal.
Last edited by GuyFromLeMans; Apr 22, 2014 at 08:20 PM.