Re: Bad harmonic balancer?
 

i have rpelced a few for the same complaint

Jeffrey DeWitt wrote:

> In all my years of driving I thought I've had everything break that
> could, but now have a new one.
>
> For the past few weeks I've been hearing a new noise from my engine, and
> I'd pretty much convinced myself that it was the bearing in the AC
> compressor bracket that supports the fan... after all the Jeep DOES have
> something like 330,000 miles on it so weird things are going to break,
> and the fan does have a little wobble to it.
>
> One of the noises is a "tink tink tink" as the fan gently hits the
> harmonic balancer.
>
> After finding the right part (I think) at the local pick a part now I'm
> not so sure that's what the problem is.
>
> Looking at it again tonight it looks like the harmonic balancer is
> wobbling a bit, that can't be good.
>
> Any of you had one of these go bad? What are the symptoms?
>
> Thanks!
>
> Jeff DeWitt

Re: Bad harmonic balancer?
 

i have rpelced a few for the same complaint

Jeffrey DeWitt wrote:

> In all my years of driving I thought I've had everything break that
> could, but now have a new one.
>
> For the past few weeks I've been hearing a new noise from my engine, and
> I'd pretty much convinced myself that it was the bearing in the AC
> compressor bracket that supports the fan... after all the Jeep DOES have
> something like 330,000 miles on it so weird things are going to break,
> and the fan does have a little wobble to it.
>
> One of the noises is a "tink tink tink" as the fan gently hits the
> harmonic balancer.
>
> After finding the right part (I think) at the local pick a part now I'm
> not so sure that's what the problem is.
>
> Looking at it again tonight it looks like the harmonic balancer is
> wobbling a bit, that can't be good.
>
> Any of you had one of these go bad? What are the symptoms?
>
> Thanks!
>
> Jeff DeWitt

Re: Bad harmonic balancer?
 

i have rpelced a few for the same complaint

Jeffrey DeWitt wrote:

> In all my years of driving I thought I've had everything break that
> could, but now have a new one.
>
> For the past few weeks I've been hearing a new noise from my engine, and
> I'd pretty much convinced myself that it was the bearing in the AC
> compressor bracket that supports the fan... after all the Jeep DOES have
> something like 330,000 miles on it so weird things are going to break,
> and the fan does have a little wobble to it.
>
> One of the noises is a "tink tink tink" as the fan gently hits the
> harmonic balancer.
>
> After finding the right part (I think) at the local pick a part now I'm
> not so sure that's what the problem is.
>
> Looking at it again tonight it looks like the harmonic balancer is
> wobbling a bit, that can't be good.
>
> Any of you had one of these go bad? What are the symptoms?
>
> Thanks!
>
> Jeff DeWitt

Re: Bad harmonic balancer?
 

Jeffrey DeWitt wrote:

> Looking at it again tonight it looks like the harmonic balancer is
> wobbling a bit, that can't be good.
>
> Any of you had one of these go bad? What are the symptoms?

yep

http://revbeergoggles.com/hb/

You can check to see if it's the mains bearings by getting
under the jeep and trying to move the hb forward and back
from the engine. it shouldn't travel more than about 1/16"

The signs are
worn belt (from misalignment)
rough idle (since it's not balancing properly)
rubbing bits (like your fan blade hitting it)

The HB is two bits of iron sammiching a bit of rubber.
That rubber is what cracks and slips.

--
-- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

Re: Bad harmonic balancer?
 

Jeffrey DeWitt wrote:

> Looking at it again tonight it looks like the harmonic balancer is
> wobbling a bit, that can't be good.
>
> Any of you had one of these go bad? What are the symptoms?

yep

http://revbeergoggles.com/hb/

You can check to see if it's the mains bearings by getting
under the jeep and trying to move the hb forward and back
from the engine. it shouldn't travel more than about 1/16"

The signs are
worn belt (from misalignment)
rough idle (since it's not balancing properly)
rubbing bits (like your fan blade hitting it)

The HB is two bits of iron sammiching a bit of rubber.
That rubber is what cracks and slips.

--
-- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

Re: Bad harmonic balancer?
 

Jeffrey DeWitt wrote:

> Looking at it again tonight it looks like the harmonic balancer is
> wobbling a bit, that can't be good.
>
> Any of you had one of these go bad? What are the symptoms?

yep

http://revbeergoggles.com/hb/

You can check to see if it's the mains bearings by getting
under the jeep and trying to move the hb forward and back
from the engine. it shouldn't travel more than about 1/16"

The signs are
worn belt (from misalignment)
rough idle (since it's not balancing properly)
rubbing bits (like your fan blade hitting it)

The HB is two bits of iron sammiching a bit of rubber.
That rubber is what cracks and slips.

--
-- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

Re: Bad harmonic balancer?
 

Yep, I replaced one that was bad enough to eat the timing cover.
You'd think they might have heard that one....

Re: Bad harmonic balancer?
 

Yep, I replaced one that was bad enough to eat the timing cover.
You'd think they might have heard that one....

Re: Bad harmonic balancer?
 

Yep, I replaced one that was bad enough to eat the timing cover.
You'd think they might have heard that one....