I measured the balancer chain as 191.5mm (applying 10 lbs pulling
force and measuring across 20 rivets (measure mid 1st pin to 21st).
A new chain is 190 to 190.5 and the service limit is 193.5. Looking
at the front balancer sprocket ("BALANCER-COMP,FR,LH" p/n 13164)
nearly all the rubber material around the gear is gone. I suspect
this. The upper most (and rear) sprocket's dampening material looks
ok ("SPROCKET,BALANCER,18T" p/n 12046), the lower right sprocket
appears ok ("SPROCKET-IDLER,IDLER" p/n 39133) and the crank sprocket
looks ok. Everything that looks ok though could be worn. I'm going
to replace the front balancer sprocket and see what it does.
Replacing the chain at this point isn't required nor do I think a 1mm
(maybe) shorter chain will matter. So I'll order p/n 13164 and see
how it goes.
--- In
DSN_KLR650@yahoogroups.com, "boulder_adv_rider"
wrote:
>
> Yes it's the balancer chain. Thanks for correcting me here.
Hunger
> is no excuse for hasty [read: shotty] posting...ha ha. So what do
we
> do here?
>
> And btw, thanks for the recommendation of Cary @ Schnitz. Having
him
> do the re-rework on the top end. Clowns that did the last job
> apparently butchered it. Read more...
>
> I just got back from a 4k+ mile, 9-day ultra-ride including Mojave
> and Death Valley. I ate through my intake clearances like
nothing.
> Towards the end my bike ran like crap (same symptoms), and I
> basically limped home ending the trip early. In addition I find
out
> it burns oil at highway speed @ 75 mph here in CO circa 5,200 to
> 5,700 rpm with a 15T front sprocket--roughly 1Q/1k miles.
> Disappointing.
>
> Well, I've realized all this work needs to be done properly and my
> dealer is not THE MAN. Today, when I removed the head and cylinder
> to ship it to Schnitz, I found the dealer mechanic reassembled an
> exhaust manifold stud in the head where a bolt is supposed to go--
the
> bolt that is inverted that bolts the cylinder to the head...clown
> must have thought there was 3 studs with acorns instead of 2!
> Shockingly, the stud in the head was too short so he couldn't even
> get an acorn nut on it even if he realized it. So the head wasn't
> properly secured nor torqued. And it all is clear now...I remember
> when I got the bike back I noticed the exhaust manifold was leaking
> because one of the studs was too long and the acorn nut couldn't
> compress the flange because the stud was bottoming in the acorn
nut.
> I explained this problem (and others) to the service guy who told
me
> they had to replace that manifold stud with something else because
> they can't get the OEM. Interestingly I find that same stud
> installed improperly in the cylinder head doing absolutely nothing!
>
>
>
> --- In
DSN_KLR650@yahoogroups.com, Jeff Saline wrote:
> >
> > On Wed, 10 Sep 2008 01:55:22 -0000 "boulder_adv_rider"
> > writes:
> > > After 20k smiles and cracking the case, the doo has run its
> course.
> > >
> > > The spring was attached but slack, but the upgraded lever like
> new.
> > >
> > > Hat is off to Mike Eagle here! Anyway, I now have slack in my
> > > timing
> > > chain, the doo can't "do" it's job now it's reached the limit
and
> > > the
> > > chain has rubbed a bit of the bottom of the case (cosmetic at
> this
> > > point).
> > >
> > > My question is what's the standard operating repair procedure
> here?
> > > It
> > > looks like the balancer sprocket with the plastic material
around
> it
> > > is
> > > pretty much worn-off. So do I replace that balancer to fix
> things?
> > >
> > > New chain? All sprockets? I'm surprised to be here with only
> 20k
> > > miles. Regardless, my top is back under the knife so it's a
good
> > > time
> > > to have a peek at the doo and other innards. Glad I found
this.
> > >
> > > I ranted about the previous top end repair earlier, but yes I'm
> > > sending
> > > my head and cylinder to Schnitz Racing for the love it needs.
> > > Possibly
> > > going 685 kit and head job with stainless valves. So I figure
> it's
> > > a
> > > great time to find stuff (broken/worn) like this matter. TIA -
> > > Brian
> > <><><><><><><><><>
> > <><><><><><><><><>
> >
> > Brian,
> >
> > The timing chain is usually used to mean the chain that goes to
the
> top
> > of the head and turns the cams. The balancer chain is the one
that
> stays
> > in the bottom end of the engine and is tensioned by the spring
and
> locked
> > by the doohickey.
> >
> > Just wondering if you mean balancer chain is loose?
> >
> > Best,
> >
> > Jeff Saline
> > ABC # 4412 South Dakota Airmarshal
> > Airheads Beemer Club
www.airheads.org
> > The Beautiful Black Hills of South Dakota
> > 75 R90/6, 03 KLR650, 79 R100RT
> > ____________________________________________________________
> > Make order out of chaos with a new filing cabinet. Click now!
> >
>
http://thirdpartyoffers.juno.com/TGL2141/fc/Ioyw6i3mgE3f4sJ3dAWWeY19qq
> cYRP7zR6aBNJR2Dmk6n0e2yXOlBS/
> >
>