2005 Jeep Grand Cherokee harmonic balancer/crank pulley wobble - JeepForum.com

 
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post #1 of 9 Old 05-11-2016, 06:48 PM Thread Starter
takman
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2005 Jeep Grand Cherokee harmonic balancer/crank pulley wobble

I've got a 2005 Jeep Grand Cherokee limited 4.7 Liter with 140,000 on the clock.

I noticed the other day the balancer seems to be wobbling a lot. Is this normal for jeeps, or is it close to imminent failure?

Also, do these slide on, or pressed on? (need a puller tool to remove)

have a look at the video, especially towards the end.

https://youtu.be/TRwtf42wVag
thanks


Last edited by takman; 05-11-2016 at 07:54 PM.
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post #2 of 9 Old 05-11-2016, 06:50 PM
Tango.
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it is plastic.. and needs to be replaced.

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post #3 of 9 Old 05-11-2016, 07:16 PM Thread Starter
takman
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Originally Posted by Tango. View Post
it is plastic.. and needs to be replaced.
plastic? looks like all metal to me, except for the rubber sandwiched between the pulley and balancer
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post #4 of 9 Old 05-11-2016, 07:34 PM
90grandoneer
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Quote:
Originally Posted by takman View Post
plastic? looks like all metal to me, except for the rubber sandwiched between the pulley and balancer
Don't know which engine you're talking about, but if it's a 5.7 you're right on the construction and it does need a puller to get it off. You'll need a new bolt when you get a new pulley (I bought a 25% under drive one for my 5.7) for it. Works great.

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post #5 of 9 Old 05-11-2016, 07:53 PM Thread Starter
takman
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Quote:
Originally Posted by 90grandoneer View Post
Don't know which engine you're talking about, but if it's a 5.7 you're right on the construction and it does need a puller to get it off. You'll need a new bolt when you get a new pulley (I bought a 25% under drive one for my 5.7) for it. Works great.
4.7

130 bucks from the dealer, or half that for an aftermarket unit.

I am leaning towards dealer, not something to skimp on i think...

but what I really need is confirmation from people that either yes it's normal (which I don't think it is) or no it's not and you need to change it ASAP
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post #6 of 9 Old 05-11-2016, 08:50 PM
Tango.
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it is plastic and metal and you can see it coming apart in the video. as you call it the "sandwich" is coming apart. common issue. there is a special puller and a tool to keep the crank still. the after market that I have seen on this part are ok. I call it plastic but i'm sure there is some high tech name for that material, like build to die at 100k.

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post #7 of 9 Old 05-12-2016, 04:39 AM
caulk04
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No, it's not plastic. Anywhere.

Pull the belt off first and give it a give the balancer a good tugging. If it's solid, I'd not worry about it. I've seen some that have runout and while it's not ideal, I don't see it hurting anything.

If it's loose at all, get that sucker changed.

Parts store will have a 'chrysler balancer puller'. It'll have three arms that grab tabs on the hub. I recall warming up my replacement balancer and lightly tapping it on the crank to start it, then finishing the install with it's bolt.

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post #8 of 9 Old 05-12-2016, 11:52 AM Thread Starter
takman
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Originally Posted by caulk04 View Post
No, it's not plastic. Anywhere.

Pull the belt off first and give it a give the balancer a good tugging. If it's solid, I'd not worry about it. I've seen some that have runout and while it's not ideal, I don't see it hurting anything.

If it's loose at all, get that sucker changed.

Parts store will have a 'chrysler balancer puller'. It'll have three arms that grab tabs on the hub. I recall warming up my replacement balancer and lightly tapping it on the crank to start it, then finishing the install with it's bolt.
yea, it may have been like that for years now. i only got it a few months ago.

i gave it a tug already and it seems solid. but it seems like it would put unecessary wear on the belt and tensioner. If it came out of the factory like that....that would be ridiculous.

i will probably change it just for peace of mind if anything, if its original, its got 140k on it....so got my money worth out of it.
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post #9 of 9 Old 03-18-2017, 11:24 PM
Raffish
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Revive?
Just got a 2005 5.7 WK with 225K kms..
Noticed the harmonic balancer wobbling a fair bit..
Just did a little research, doesn't sound too good....
Found the thread.
I will replace mine ASAP
Love this site.
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