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Author Topic: 690 rocker failure symptoms  (Read 1935 times)

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Offline Dwerg

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690 rocker failure symptoms
« on: April 06, 2017, 10:53:29 am »
What are the warning signs for the rocker issues if any? My bike picked up a very audible chatter at idle coming from the top of the motor which I assume can only be rockers/valves/cam related  :-[ :-[

My bike will be going in to be opened this weekend. I'm just trying to get some idea what I am letting myself in for.
« Last Edit: April 06, 2017, 10:59:08 am by Dwerg »
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Offline aka.Goliath

Re: 690 rocker failure symptoms
« Reply #1 on: April 06, 2017, 11:10:19 am »
Not perhaps the that crap cam chain tensioner they use.
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Offline Dwerg

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Re: 690 rocker failure symptoms
« Reply #2 on: April 06, 2017, 11:19:19 am »
Not perhaps the that crap cam chain tensioner they use.

Yip possible. Is there an after market replacement?
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Offline aka.Goliath

Re: 690 rocker failure symptoms
« Reply #3 on: April 06, 2017, 11:22:04 am »
They are some but only ever found ones from overseas. They're all manual tensions which usually only need to be checked when servicing the bike. I've replaced my tensioner 3 times and it really hasn't lasted more than a few rides before it's noisy again.
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Offline aka.Goliath

Re: 690 rocker failure symptoms
« Reply #4 on: April 06, 2017, 11:27:04 am »
There's quite a lengthy thread on advriders about the rocker arm wear. Normally you need to remove the valve covers and have a lock at the rollers for wear. What year model do you have. Unfortunately if the rocker arms fail there's no real way of prediagnosing that as they will just break.
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Offline Dwerg

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Re: 690 rocker failure symptoms
« Reply #5 on: April 06, 2017, 11:32:20 am »
2014 with about 29 000kms on the clock

Will the roller bearing not start complaining when it develops play?
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Offline aka.Goliath

Re: 690 rocker failure symptoms
« Reply #6 on: April 06, 2017, 11:40:24 am »
That's normally what is described. I see that the bearings normally collapse. From what I remember the dodgy rockers arms were on the older models.
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Offline Forrie

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Re: 690 rocker failure symptoms
« Reply #7 on: April 06, 2017, 11:51:20 am »
I have just gone through the process of replacing the rocker arms on my 2013 690.

In my case it was simply that the the bike became more and more difficult to start.......
 
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Offline Bill the Bong

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Re: 690 rocker failure symptoms
« Reply #8 on: April 09, 2017, 07:30:28 pm »
A clatter is a good sign (of rocker problems) if it is there the whole time. If it goes quiet a couple of seconds after start, it is the hydraulic cam chain tensioner.  Another test is to use a stethoscope or a long screwdriver.  If the noise is isolated at the tappet cover, its the rockers.  The cam chain tensioner sits on the side.  I've replace two, both exhaust.  One form a 2008, one from a 13.
« Last Edit: April 10, 2017, 02:39:50 pm by Bill the Bong »
 

Offline Dwerg

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Re: 690 rocker failure symptoms
« Reply #9 on: April 10, 2017, 01:52:36 pm »
A clatter is a good sign if it is there the whole time. If it goes quiet a couple of seconds after start, it is the hydraulic cam chain tensioner.  Another test is to use a stethoscope or a long screwdriver.  If the noise is isolated at the tappet cover, its the rockers.  The cam chain tensioner sits on the side.  I've replace two, both exhaust.  One form a 2008, one from a 13.

Thanks. Yes, clatter is there the whole time. Noticed it vaguely in the morning and started getting louder on my way home from work.
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Offline Bill the Bong

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Re: 690 rocker failure symptoms
« Reply #10 on: April 10, 2017, 02:38:00 pm »
I would not ride until I've have checked the rockers.  Please check my edit, I hope I did not give false hope.
« Last Edit: April 10, 2017, 02:40:50 pm by Bill the Bong »
 

Offline Dwerg

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Re: 690 rocker failure symptoms
« Reply #11 on: April 10, 2017, 03:04:43 pm »
Please check my edit, I hope I did not give false hope.

 :spitcoffee:

No all good. I assumed there was a type-o  :thumleft:
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Offline aka.Goliath

Re: 690 rocker failure symptoms
« Reply #12 on: April 10, 2017, 03:25:35 pm »
Interestingly. I have been researching my oil pressure problem I currently have... the most likely thing I've picked up was that the oil pressure regulator could have worn enough to not allow enough oil flow. The symptoms are almost identical to the ones you have much like myself but mine with flashing oil light. I'll give mine a check tonight to see if it's in spec. Just perhaps an alternative theory...
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Offline Skyfire

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Re: 690 rocker failure symptoms
« Reply #13 on: May 02, 2017, 08:03:36 pm »
Hi guys,

I have noticed the same noise coming from the engine and also having starting problems.  It starts after about 4 seconds of cranking....is that normal?
I also checked the valve clearances and they are all in spec.  How do I go about in checking the rocker for play? It did have lateral play but I could not see any bearing play.  Also the chain was very stiff.... I had a look at the chain tensioner and it seemed that it was fully extended altho the engine was cold.  I couldn't move or get any play out of the chain as it was that tight.

Any comments would be appreciated.

 

Offline Bill the Bong

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Re: 690 rocker failure symptoms
« Reply #14 on: May 04, 2017, 10:17:15 am »
Normally the intake or exhaust clearances open up if there is an issue with a rocker.  Mostly...
 

Offline aka.Goliath

Re: 690 rocker failure symptoms
« Reply #15 on: May 04, 2017, 10:39:51 am »
You know this sounds very familiar. When I did my valve clearance I also decided to check my rocker arms and removed the cam. When I put it back in I got it lined up but somehow the chain was one tooth out on the cam. This gave me endless problems and almost the exact same symptoms you are describing.

The tensioner is spring loaded and because I normally take the cam out to change shims I also remove the tensioner. To reinstall, using a cloth in a bench vice and compress the tensioner (it has a ratchet that will keep it compressed until fully pushed in which makes it pop out again) once installed take out the center screw on the tensioner cap and using a allen key push/compress it in that little further to make it pop back.
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Offline Skyfire

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Re: 690 rocker failure symptoms
« Reply #16 on: May 04, 2017, 09:28:28 pm »
Do you have to take out the tensioner to relieve tension in order to check the valve clearances?
 

Offline Bill the Bong

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Re: 690 rocker failure symptoms
« Reply #17 on: May 08, 2017, 09:35:03 am »
Nope
 

Offline Rough Rider

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Re: 690 rocker failure symptoms
« Reply #18 on: May 08, 2017, 10:18:26 am »
I fitted a manual tensioner to mine a few weeks after I bought the bike.
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Offline Skyfire

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Re: 690 rocker failure symptoms
« Reply #19 on: May 09, 2017, 08:11:00 pm »
Cool thanks for the reply.  I will have to check the bearings then