Grant demystifies the black art of Tire Changing and Repair to help you STAY on the road! "Very informative and practical." See the trailer 
Cotton or synth sweat-wicking t-shirts with the Horizons Unlimited logo on the front and a snappy slogan (changing every year) on the back.
Show your route on your panniers. Great conversation starter when you meet people on the road!
Motorcycle and travel books to inspire and inform you!
ll 5 DVDs with a custom printed slip case. "The series is 'free' because the tips and advice will save much more than you spend on buying the DVD's."
|
|||||||
| Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions. |
 |
|
|
LinkBack | Thread Tools | Display Modes |
|
#1
16 Jul 2008
|
|||
|
|||
|
Broken Timing chain?
So the bike won't start. ('89 3AJ Tenere) This wasn't too much of a worry until I scared myself with a huge backfire when cranking it over. Then, thinking back to how the starter motor didn't seem to be having to work as hard as normal, I have come to the conclusion that the timing chain has snapped. It's either that or there's a valve stuck upon, right?
So, while I ponder whether I'm going to brave the bottom end and do it myself, a couple of questions for the assembled knowledge: Is the XT600 engine an interference engine, and if so will being cranked a load of times with a snapped chain have damaged the piston/valves? Are there any other jobs I'd be as well doing while I do the timing chain? Cheers. 
|
|
#2
16 Jul 2008
|
|||
|
|||
|
Oeps
Yes it is. Interference engine.
Easiest way to verify; open valve covers and check: A - When the engine is very carefully cranked by hand, are the rockers and valves moving? B - Does any of the valve(s) have (very) excessive play? If A - timing chain OK, if not A - chain broken If B - valve(s) stuck open Bottom end does not need to be opened to replace the timing chain - only remove LH cover and rotor. Bottom end of the chain lives there. And of course the top end needs to come off. Auke
|
|
#3
16 Jul 2008
|
||||
|
||||
|
I just had my engine serviced because the cam chain also broke while i was at 50mph... both my 2 intake valves were bent....luckily nothing else got damaged because of that..
One thing...do not forget to align the timing points if the chain did brake. It is crucial or you might end up having to reopen the engine once more. If I were you I'd had the bottom end checked for any other possible damage it might have happened (as I did). I only went for the mechanic because he's a friend (yes, it's a small island) because he has a little more knowledge than me AND has all the tools needed.. Later! Vando 
Last edited by bacardi23; 16 Jul 2008 at 17:05.
|
|
«
Previous Thread
|
Next Thread
»
| Currently Active Users Viewing This Thread: 1 (0 Registered Users and/or Members and 1 guests) | |
| Thread Tools | |
| Display Modes | |
Linear Mode
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| XR600 timing chain dramas | Stirlo | Honda Tech | 1 | 24 Aug 2006 22:22 |
| Setting the timing Chain | gwel | Yamaha Tech | 4 | 25 Apr 2006 23:15 |
| Rear Shock Linkage Arm Broken Broken | Andy White | KTM Tech | 2 | 30 Jan 2006 03:19 |
| timing chain | gwel | Yamaha Tech | 3 | 28 Sep 2005 02:53 |
| Timing chain replacement through top end | chris Aus | Yamaha Tech | 7 | 2 Sep 2005 04:15 |
All times are GMT +1. The time now is 18:02.
