Chain snap :(

[davidkent]

Hi all.
Some advice really...


I've had my chain snap last weekend.
I've sulked all week and decided that given its winter, there's no urgency, so as you'd imagine, I've ordered a new sprocket cover already.


My main concern in honesty is that where the clutch rod snapped, its left some inside - This doesn't look all that bad and will probably come out... BUT...


The hole has gone oblong..
Everything else looks relatively in order, except for the chain guard which is basically gone.


I've read online vaguely about bushing this or something similar, but couldn't find all that much info.


I'm assuming this is bad news?
Its a 2003 FZS600


Cheers


EDIT: Pics

[limax2]

I would be amazed if it had distorted the hole it the gearbox shaft  :eek , so I assume it is just the oil seal hole that has distorted. In which case just remove the retaining plate and replace the seal.
If you can't get the rest of the push rod out from the sprocket end you will need to partly dismantle the clutch and push it from that end. Either way don't lose the ball bearing at the clutch end of the push rod.

[fazersharp]

Any bits left in the hole---- a magnet maybe to get them out.
I have not seen an instance of a snaped chain on these forums and would be very interested to know the make of chain, any sprocket tooth mods, heavy loads or what caused it.
Any ideas

[darrsi]

Any bits left in the hole---- a magnet maybe to get them out.
I have not seen an instance of a snaped chain on these forums and would be very interested to know the make of chain, any sprocket tooth mods, heavy loads or what caused it.
Any ideas

My money's on being fitted incorrectly!

[Deefer666]

Had a chain snap on my FZS years ago. The broken rod can be retrieved with a magnetic screw driver (just make sure you dont lose the ball bearing that sits behind it. As for the hole going oblong are you sure its not just the oil seal?

[limax2]

:agree  darrsi.
I have heard of some poor quality chain out there being sold as good stuff, don't know if it is true or common though  :\ .
Otherwise not having enough slack in chain is a good way of overloading it.

[His Dudeness]

Maybe it was worn out and he didn't change it in time

[davidkent]

Not had the bike long, i think it was too tight - I'm no expert though and could have been a cheap chain, or a combination of the two.


The oil seal is distorted, as has the hole it sits in, looks like soft aluminium, if this can be changed, ie items 27/28 in this drawing, unless they're something else on the other side? [size=78%]https://www.motorcyclespareparts.eu/spec...art=351470[/size]


This ball bearing, where exactly does this go? the end of the rod or something? and how does it sit there, I'm intrigued to know this, because people mention it a lot, and i'd have thought surely that if the rod has broken the ball bearing would already have fallen out?
Thanks

[Ebme Geek]

I think items 27-collar & 28-thrust plate are the other end of the gear shaftbehind the clutch basket, the seal you see by the sproket is item 17. The aluminium is the the engine case itself, so might be possible to glue a new seal in or getting some chemical metal there might be a solution.
The ball bearing is item 19 (other end of the push rod)

get a pic up and I am sure someone will advise best option on ally prob.

[davidkent]

Tried getting some pics earlier and wasn't easy, plus my camera was being a goon.
Will post what i got up shortly
Cheers

[fazersharp]

heres what the pushrod looks like. Follow the below link for some info on the pushrod

Here is a picture of me with my push rod in my hand------u er misses
I put a very thin layer of engin oil on but still when I pushed it in most of it came off at the rubber seal so I wiped most of it off - I dont think it needs anything

And sorry as it is a perfect shot covering up the oil seal in the background
 

And here is almost a picture of a good undamaged seal----middle left next to the sprocket

[davidkent]

Wow, most of its still in there then - I've got 2 short bits out and thats all!


My main concern is the hole, give me 5 and i'll upload the bad pics that i have managed to get

[davidkent]

Pics are awful and don't really show much, my camera just wouldn't focus!

[fazersharp]

Your camera cant focus because it cant "see" you need to shine a tourch onto it so the camera can then see to focus and then take the picture - and dont try to get so close

[davidkent]

That was in daylight haha
Tried alsorts, it wouldn't focus unless it was something miles away

[fazersharp]

Isnt the push rod hollow,mine felt very light and not solid, if so it would snap way before it oval-ed the metal. Once you have cleaned the gunk off you might see better

[davidkent]

I have the seal here in the house, its definitely ovaled.
Looked pretty solid, or the bits i have here seem to..

[fazersharp]

If you look at my picture the bottom of the pushrod as I hold it- the tapered part in two steps, the first step is where it fits (i think into a hollow tube) which i also think is alluminium. The bit at the bottom is what is left sticking out of the hole which is why its rusty and that is the bit you have and that bit is solid

[davidkent]

Makes sense i guess
The hole on the bike is definately ovaled unfortunately, hopefully there's a way around this

[fazersharp]

Ah yes if you see my rusty line and then shiney untill the alli that amount of solid is in the hole so I would then think it was possible to oval the metal. As geek says- chemical metal there might be a solution.
To get the hole end back to round and then a new rubber seal