Re: [Chrysler300] harmonic balancer rebuild

[paulholm <paulholm@xxxx>]

Gary Nelson wrote:

> Hi Gang
> I am a few days late in response to damper trouble. I had to get
> my damper out to get photos then Bob set me up with URL on club
> site so those interested my view my 392 damper fix,(harmonic
> balancer).

> I owned a 300C in 61 and experienced damper hub walk off. On my
> current 300C restoration I am correcting the damper problem as
> shown in the 5 photos using the URL shown below.
> The photos have text in them to help understand what is going on
> in each photo. I will add some text here to complete what is not
> shown in photos.

> 1) First thing you will want to do before removing damper is to
> find exact top dead center and transfer that to both inner and
> outer hubs. If anybody requests I can do a photo shoot detailing
> the procedure to accomplish that.

> 2) The damper is pressed apart.
> 3) 3 groves are machined into each hub,(see photo).
> This is what keeps them from walking apart after
> the casting urethane is in place.
> 4) I machine a precision locating fixture that precisely holds
> the inner and outer hubs concentric and correct relationship
> to each other.(not shown in photos).
> 5) The damper is placed front down on the fixture. Part of the
> fixture has a ring that seals off the gap as you fill the gap
> from back side it will not run out plus leaves a smooth surface
> when cured due to the machined ring.
> 6) The last two photos show where I applied new degree marks.
> To do this I made a skin pass in the lath to give me a fresh
> surface to start new degree marks. This is optional and some
> may think it is a overkill. That's fussy me. I have the luxury
> of having a complete machine shop in my business and I just
> tell my tool and die maker, do this do that and it gets done.
> Some times he puts me off a while.

> I would have to charge $135 to due all excluding new degree marks.
> Most of the work is in setting up and doing the machine work.
> I don't make money at this price and not looking for the work.
> If I can help then that's what I try to do.

> View photos here.
> www.chrysler300club.com/rcmstuff/gnharm/harm.html

> Gary, The Parts Doc

> >Date: Sun, 26 May 2002 20:03:00 -0500
> >Subject: Re: [Chrysler300] harmonic balancer rebuild

> >George and Rose wrote:

> > > Hi all,
> > > On the subject of rebuilding harmonic balancers,

snip

> >Once you get your "new" damper, I suggest you mark the front
> >of it with a mark (I used a white paint line) on the hub AND
> >the ring part. That way you can see when it starts to slip.

> >Paul Holmgren

To those folks who object to excessive replies. Sorry, but this
is important info.

Gary, does the casting urethane have the same damping charistics
as the original material??? If so this is a GREAT price.

>From the few inquiries I know of that have ended up with the 2
major Cal. companies that do this service this a HUGE savings!!!


-- 
Paul Holmgren
Hoosier Corps #33, L-6
2 57 300-C's in Indy