Harmonic balance help
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Joined: Feb 2014
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Harmonic balance help
Hello to all,
I discovered my harmonic balancer to be flopping around on my 1986 stock engine. I removed the belt and the three bolts on the pully and thought it should come off easily. Not the case. I driven a tool in between the pully and HB a little ways and thought it should just pop off. Am I missing something? Just want to be sure. I haven't removed the crank bolt yet as this does not seem to be part of the equation from looking at things. I was also looking for a video or detailed step by step directions for an 86 to help me complete this project but haven't found anything yet. Any advice/help/rescue effort would be appreciated. Thank you!
I discovered my harmonic balancer to be flopping around on my 1986 stock engine. I removed the belt and the three bolts on the pully and thought it should come off easily. Not the case. I driven a tool in between the pully and HB a little ways and thought it should just pop off. Am I missing something? Just want to be sure. I haven't removed the crank bolt yet as this does not seem to be part of the equation from looking at things. I was also looking for a video or detailed step by step directions for an 86 to help me complete this project but haven't found anything yet. Any advice/help/rescue effort would be appreciated. Thank you!
Race Director
Joined: Mar 2015
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I went with my experiance. 
Team Owner
Joined: Aug 2004
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From: Park City Utah
Don't need a puller to remove the pulley, typically. Should come right off w/bolts removed. You DO need to remove the center/crank bolt, however, for the pulley to come off of the damper.
.
Last edited by Tom400CFI; Nov 5, 2015 at 11:57 AM.
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Team Owner
Joined: Aug 2004
Posts: 21,543
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From: Park City Utah
The OP's isn't an LT1 either; or is that what you were saying?
LT1, the damper IS the pulley. OP's looks like this:
^Older motor, but notice how the crank bolt washer overlaps the pulley.
Here is another pic...
LT1, the damper IS the pulley. OP's looks like this:
^Older motor, but notice how the crank bolt washer overlaps the pulley.
Here is another pic...
Last edited by Tom400CFI; Nov 5, 2015 at 01:25 PM.
Safety Car
Joined: Sep 2004
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From: Mission Viejo CA
I removed the belt and the three bolts on the pulley and thought it should come off easily. Not the case. I have driven a tool in between the pulley and HB a little ways and thought it should just pop off. Am I missing something? Just want to be sure. I haven't removed the crank bolt yet as this does not seem to be part of the equation from looking at things.
I did find an error in my '84 FSM, though. For reassembly, it says to install the center bolt before installing the pulley, but you quickly learn that won't work!!
Race Director
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yes that is what I was saying on my lt1 only had to take the 3 bolts out but still a pita.
with you helpful text and pics looks like he needs to pull the 3 bolts and the center bolt with no need to pull the hub to change the pully. learned something new thank you.
with you helpful text and pics looks like he needs to pull the 3 bolts and the center bolt with no need to pull the hub to change the pully. learned something new thank you.