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#618600 - 07/17/10 06:57 AM R1200RT L/S cam tensioner install
DMilan Offline
Member

Registered: 03/27/04
Posts: 347
Loc: Cleveland, Ohio
Hello Boys,

My '05RT has had a loud ticking when cold started from the L/S valve area. Keeps ticking for a couple of minutes. It's less noisy if I open the throttle a bit to increase RPM. After warming, it is very quiet, stays that way until the next cold start.

Anyway, I'm going to re-check the valves on the left side and while I have the bodywork off figured to install a L/S Cam Chain tensioner just in case that's the culprit.

Question is, do I recall that the left side Cam Tensioner install is somehow "not straight forward"? Somethings in the way... A frame mount I believe. I think that I recall reading about some helpful tip/procedure/tool to use to accomplish the task.

Thanks
Dmilan
_________________________
Cleveland, OH
2004 K1200GT
'07 R1200RT
'08GT
'05 RT
'06 R1200GS
'10 R1200GS '11 GSA
Current 3
2003 K1200GT
2008 K1200GT
2012 V-Strom 650

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#618637 - 07/17/10 10:51 AM Re: R1200RT L/S cam tensioner install [Re: DMilan]
essman Offline
Member

Registered: 03/23/09
Posts: 123
Loc: CA central coast & NH seacoast
All of my Oil/Hex heads have rattled on start-up and I consider it normal. Two of my oilheads (both 2001 R1200Cs that idle at 800 RPM) had a knock(not a tick) AFTER warming up which went away at higher RPM. I replaced the cam chain tensioner and in both cases the knock went away. In my experience, what you are hearing isn't a cam chain tensioner and I wouldn't spend the $90.

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#618787 - 07/18/10 08:39 AM Re: R1200RT L/S cam tensioner install [Re: essman]
hopz Offline
Member

Registered: 08/21/05
Posts: 3311
Loc: Colorado Springs, CO
IIRC there is a really good write-up and pictorial on replacing a Cam Tensioner over at the BMWMOA Forum Site...

I have no idea if you need to do anything or not but it is a good piece of How-To...
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R1200RT
R1100S

“We are a nation that has a government—not the other way around.”
—Ronald Reagan

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#618805 - 07/18/10 10:20 AM Re: R1200RT L/S cam tensioner install [Re: essman]
moshe_levy Online
Member

Registered: 07/05/06
Posts: 3642
Loc: NJ - God Help Me
Originally Posted By: essman
All of my Oil/Hex heads have rattled on start-up and I consider it normal.


It is normal on Oilheads. It is not normal on Hexheads. The CCT upgrade for Oilheads is merely to retrofit the older bikes with the CCT from the Hexhead design, which does not drain oil like the older Oilhead design CCT. As such, it does not need a few seconds to fill with oil like the older Oilhead CCT, and thus more consistent tension on the cam chain is maintained, even after the bike sits. See http://www.mklsportster.com/Articles/mcncct.pdf for details....

-MKL
_________________________
http://www.mklsportster.com/
2013 Moto Guzzi V7 Racer
2009 BMW R1200RT
1977 BMW R100S
1973 BMW R75/5
BMW-MOA, AMA, IBA

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#626539 - 08/13/10 05:40 PM Re: R1200RT L/S cam tensioner install [Re: DMilan]
DMilan Offline
Member

Registered: 03/27/04
Posts: 347
Loc: Cleveland, Ohio
Originally Posted By: DMilan
Hello Boys,

My '05RT has had a loud ticking when cold started from the L/S valve area. Keeps ticking for a couple of minutes. It's less noisy if I open the throttle a bit to increase RPM. After warming, it is very quiet, stays that way until the next cold start.

Anyway, I'm going to re-check the valves on the left side and while I have the bodywork off figured to install a L/S Cam Chain tensioner just in case that's the culprit.

Question is, do I recall that the left side Cam Tensioner install is somehow "not straight forward"? Somethings in the way... A frame mount I believe. I think that I recall reading about some helpful tip/procedure/tool to use to accomplish the task.

Thanks
Dmilan



Left side throttle body must be removed to install l/s tensioner.

So I readjusted the valves....
Maybe that will help.
Exhaust on the left side was a bit loose.
Now there a bit snug, I can get a .305mm feeler in there, but it's snug.
Hoped that would quiet it down.
Same noisy start up
shezbot!!

Bought a new cam chain tensioner for the left side a few weeks back
Went to install.
I was temporarily defeated by the dame hose clamps on the throttle body, couldn't figure out how to release them, didn't want to damage them.

Got 'em off today. Removed the left side tensioner.
Wait till ya see what I found.

Gotta figure out how to post pics.
Dmilan
_________________________
Cleveland, OH
2004 K1200GT
'07 R1200RT
'08GT
'05 RT
'06 R1200GS
'10 R1200GS '11 GSA
Current 3
2003 K1200GT
2008 K1200GT
2012 V-Strom 650

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#626706 - 08/14/10 10:25 AM Re: R1200RT L/S cam tensioner install [Re: DMilan]
DMilan Offline
Member

Registered: 03/27/04
Posts: 347
Loc: Cleveland, Ohio
No time for pics...

Here's what I found.
The old plunger that I just removed from my R1200RT tensioner assembly is fully extended and almost completely seized in that position.

I can rotate it, but you can't compress it, even in a vice.

The new one which I installed compressed smoothly, requiring a reasonable squeeze to cover the 3/4" or so of travel. But it was empty, brand new, never run, no oil in it.

Is this how it should be?
Is there oil in the chamber of my original, being held back by the check valve?
I heated it with a heat gun.. still won't compress, maybe an 1/8"

Anybody know?
Enlighten me please.

Dmilan




Edited by DMilan (08/14/10 10:28 AM)
_________________________
Cleveland, OH
2004 K1200GT
'07 R1200RT
'08GT
'05 RT
'06 R1200GS
'10 R1200GS '11 GSA
Current 3
2003 K1200GT
2008 K1200GT
2012 V-Strom 650

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#642031 - 10/04/10 02:22 PM Re: R1200RT L/S cam tensioner install [Re: DMilan]
Red RT Offline
Newer Member

Registered: 10/04/10
Posts: 23
Have the replaced cam tensioner made a diference on your bike? I have gone through the same routine with my bike... I figured on the noise may be coming from the valves... but no, it is not. Interested to hear from anyone having this tensioner replaced. Thanks for any input.

PS: My bike has about 11K miles on it. It seems the noise started about 2K-3K miles or so ago... valve adjustment did not help.

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#642036 - 10/04/10 02:42 PM Re: R1200RT L/S cam tensioner install [Re: DMilan]
dirtrider Offline
The Oracle
Member

Registered: 06/05/10
Posts: 6951
Loc: Ohio
Afternoon Dmilan


What you found doesn’t surprise me. The one you pulled out is full of engine oil so the piston should spin easily. As long as that thing is full of oil you won’t be able to compress it without massive amounts of force and even then it would probably bulge the case rather than compress it very far. Just pull it apart, then drain the oil out, then you should easily be able to compress the piston.

The new one is empty so should be easy to compress.
_________________________
D.R. ___
Sent from my rotory dial wall phone!

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#642066 - 10/04/10 04:17 PM Re: R1200RT L/S cam tensioner install [Re: dirtrider]
DMilan Offline
Member

Registered: 03/27/04
Posts: 347
Loc: Cleveland, Ohio
Hi dirt..
You're right

Additionaly, all you have to do is take a narrow pointy object, I used the long end of a very small allen wrench, and poke it up the bottom throught the tensioner cylinder and push in at the check ball. All the oil will drain out and the tensioner spring moves freely again.

As you explain, and as Jamie told me at Mathias BMW in New Phil, if its full of oil, the harder you try to compress the tensioner cylinder, the more firmly the check ball seats.

Nothing was wrong with my original.
I stll have an annoying tick tick tick at cold start from l/s head. Everythings adjusted corectly, it runs fine and it quiet after it warms a bit.

I may quit chasing this ghost. Or not.

ha ha
Dmilan


Edited by DMilan (10/04/10 04:19 PM)
_________________________
Cleveland, OH
2004 K1200GT
'07 R1200RT
'08GT
'05 RT
'06 R1200GS
'10 R1200GS '11 GSA
Current 3
2003 K1200GT
2008 K1200GT
2012 V-Strom 650

Top
#642068 - 10/04/10 04:22 PM Re: R1200RT L/S cam tensioner install [Re: DMilan]
dirtrider Offline
The Oracle
Member

Registered: 06/05/10
Posts: 6951
Loc: Ohio
Evening Dmilan


An awful lot of 1100/1150/1200 BMW boxers seem to have that morning start up rattle.

Just attend a BMW rally and listen in the morning. Lots of um do it.
_________________________
D.R. ___
Sent from my rotory dial wall phone!

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