Ticking Sound From Engine

[mrdrprof]

I think I found the problem... I'm not sure if this bolt is supposed to move up and down like it does. What is this?

https://imgur.com/a/nVt3ELQ

I've never been deep enough into the engine to know but from the nut and plate I think that's the end of the counterbalancer. It has weights on it, spins counter to the crankshaft and serves to reduce vibration. I would assume that there shouldn't be any free-play in it at all, being a core reciprocating component and all.



There must be a bearing right behind that shaft where the counterbalancer spins in the case, which may have disintegrated if there's up/down play, but this is just my guess.

Ah crap. I'm gonna guess I need to take the whole engine apart to get to it? I might have a shop fix it because I don't have the space to tear an engine down.

[Kookas]

I can't answer whether you'd have to split the cases to remove that bearing - is it possible it could be slid out after removing the nut and washer?

That said, you might want to just to know if there's any other damage.

Does it sound/move like this?
https://www.youtube.com/watch?v=Atq4nKfh7kg

Found this video in this thread.
http://gstwins.com/gsboard/index.php?topic=61017.0

Although actually, I'm wondering about the journal on that counterbalancer - I think unfortunately yeah you'll want to split the case and pull the whole shaft because there's a good chance of journal damage from the engine running with the damaged/missing bearings.

[mrdrprof]

I can't answer whether you'd have to split the cases to remove that bearing - is it possible it could be slid out after removing the nut and washer?

That said, you might want to just to know if there's any other damage.

Does it sound/move like this?
https://www.youtube.com/watch?v=Atq4nKfh7kg

Found this video in this thread.
http://gstwins.com/gsboard/index.php?topic=61017.0

Although actually, I'm wondering about the journal on that counterbalancer - I think unfortunately yeah you'll want to split the case and pull the whole shaft because there's a good chance of journal damage from the engine running with the damaged/missing bearings.

Yeah, it moves like in that video and makes a similar sound. I had a rattle every now and then when I would be riding but I thought it was just a part of the fairings vibrating. I guess I was wrong.

I don't see any metal flakes or anything in the oil. It looks like normal used oil so I guess I have that going for me   

[mrdrprof]

Here's what it looks like without the bolt and washer https://imgur.com/a/S0uxTJ5

[J_Walker]

Here's what it looks like without the bolt and washer https://imgur.com/a/S0uxTJ5

https://s19.postimg.cc/9aaz10x6b/this.png

blue is the bearing, notice the bottom half is GONE. while the top halve is thick. lets hope that there is even a thin slice of bearing left under there

also when you drain the oil the oil flakes won't float out with the oil. the oil pan acts sorta like a sluice catching the metal particles. take off oil pan and you will see a whole bunch of them.

The red is where the counter balancer has lost its temper. and probably should be swapped.

no the bearing cannot be removed with engine intact, yes the halves can be split apart without taking off the top-end.

https://www.ebay.com/i/401397265663?chn=ps - counter balancer.

you're going to need FOUR of the bearings, when you order them its going to be according to the number on the engine case and counter balancer. and can't order them until you get the replacement balancer. 

[Beelzeboss]

So... find a 2nd hand engine

[sledge]

Whowah.......no doubt about that, the bearing is toast!!


You need to check the diameter and concentricty  of the balance shaft bearing journals first.

If they are out of spec', scored, or oval it's pointless replacing the bearings 

31.984mm to 32.000mm is the tolerance and you need an oil clearance between 0.02 and 0.044mm. (figures from the service manual)

If you do remove the balance shaft it's VITAL it goes back correctly meshed with the crank. There are two dimples, one on each gear that must align with each other.

You also need to ask why it's failed, possibly a blocked oil gallery