660 Check it before it goes BANG!!!

Black Panther/Street Moto, Baghira, Enduro, Mastiff, Skorpion Traveller and Tour.

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660 Check it before it goes BANG!!!

Postby Chalks » Sat Jan 19, 2013 9:18 am

Hi All :smt006 I've just stripped my spare Baggy engine and discovered the nut on the balance shaft was only finger tight with only the lock washer holding it on. No signs of wear or damage though. I've been reading on another forum the shaft can wear when this happens causing engine damage. My next job is check the nut and use thread locking compound on the motor I'm running. :shock:
Last edited by Chalks on Sun Jan 20, 2013 5:24 am, edited 2 times in total.
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Re: 660 Check it before it goes BANG!!!

Postby DAVID THOMPSON » Sat Jan 19, 2013 12:25 pm

all owners of this engine need to read this group of posts and i mean the whole thing
it is very important to the health of both your engine and your pocket book
as it can turn you nice bike into a "parts bike in seconds

viewtopic.php?f=3&t=5215&hilit=balance+gear

dave
Dave 2002 MZ RT125+1995 Saxon Tour(500cc)
1997 MZ 660 Traveller+6/13/09 WV USA
"IN the end times the IDIOTS will be in charge
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Re: 660 Check it before it goes BANG!!!

Postby den » Sat Jan 19, 2013 2:28 pm

so how easy is it to check,,Whats got to come off?? Any photos
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Re: 660 Check it before it goes BANG!!!

Postby den » Sat Jan 19, 2013 2:31 pm

Chalks wrote:Hi All :smt006 I've just stripped my spare Baggy engine and discovered the nut on the ballance shaft was only finger tight with only the lock washer holding it on. No signs of wear or damage though. I've been reading on another forum the shaft can wear when this happens causing a knock when running. My next job is check the nut and use thread locking compound on the motor I'm running. :shock:

post a photo of the offending area maty--A picture speaks a thousand words
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Re: 660 Check it before it goes BANG!!!

Postby handsomejackuk » Sat Jan 19, 2013 5:43 pm

yep need a photo of how to check this plaese and a dsecription
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Re: 660 Check it before it goes BANG!!!

Postby DAVID THOMPSON » Sat Jan 19, 2013 6:11 pm

read the post in the link i gave above about the whole thing

there are pictures and part numbers included
dave
Dave 2002 MZ RT125+1995 Saxon Tour(500cc)
1997 MZ 660 Traveller+6/13/09 WV USA
"IN the end times the IDIOTS will be in charge
of everything"
"I like the road less traveled if it's PAVED!"
wd8cyv at yahoo dot com
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Re: 660 Check it before it goes BANG!!!

Postby den » Sat Jan 19, 2013 6:53 pm

now im worried,, I bought this bike becaus of the engine being "bullet proof" . now it seems its not??
Just what are the chances of me finding the nut loose and averting an engine explosion,,50/50?/ 10 to 1 ?? odds on or evens :cry:
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Re: 660 Check it before it goes BANG!!!

Postby DAVID THOMPSON » Sat Jan 19, 2013 7:52 pm

do not weigh the odds FIX IT
dave
Dave 2002 MZ RT125+1995 Saxon Tour(500cc)
1997 MZ 660 Traveller+6/13/09 WV USA
"IN the end times the IDIOTS will be in charge
of everything"
"I like the road less traveled if it's PAVED!"
wd8cyv at yahoo dot com
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Re: 660 Check it before it goes BANG!!!

Postby Chalks » Sun Jan 20, 2013 5:01 am

I think Dave is right Den, prevention is going to be a lot less hassle than repair after it's too late. It's a full strip down to change the balance shaft should the unthinkable happen. I didn't take any photos and my spare motor is now completely stripped now but these are from the other thread:
slipstreambalancergear[1].jpg


The large nut on the toothed pully at 12 o'clock is the balance shaft (which was loose). The other pully to the right is a replacement (from a Yamaha 700 Raptor) that will cure our problems (Yam part number 1S3-11536-00). Thanks for the info Dave.
Last edited by Chalks on Sun Jan 20, 2013 5:38 am, edited 1 time in total.
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Re: 660 Check it before it goes BANG!!!

Postby Chalks » Sun Jan 20, 2013 5:20 am

balancergear[1].jpeg


The spring loaded pully on the right is the offending article! (Replacement on the left).

I think the repair sequence will go something like:
Order new pully (700 Raptor), lock washers & clutch cover gasket,
Drain oil & coolant,
Remove clutch cover (right hand engine casing) and water pump,
Remove clutch,
Remove and replace spring loaded crank pully and lock washer,
Remove balance shaft nut and replace lock washer,
Replace nut and washer using thread locking compound,
Tighten, tighten & tighten some more.
Rebuild,
Feel reasured that your engine will live longer than you!
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Re: 660 Check it before it goes BANG!!!

Postby den » Sun Jan 20, 2013 6:31 am

Thanks for the photos , easy enough job now i can see whats involved,,i got two questions
why the need to change the spring pully for a solid raptor one??
will i need to buy a gasget for the cover , pt,number anyone??
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Re: 660 Check it before it goes BANG!!!

Postby Chalks » Sun Jan 20, 2013 6:40 am

Apparently the back and forth action of the sprung pully batters the fixed pully on the balance shaft that can cause this:
balancer_damage[1].jpg
balancer_damage[1].jpg (18.01 KiB) Viewed 13130 times

The gasket is optional but if you use the old one and it leaks you've got the job to do again.
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Re: 660 Check it before it goes BANG!!!

Postby den » Sun Jan 20, 2013 7:36 am

Searching for the drive gear in the tinternet is hard , even though the part number is correct most websites just want the bike make model and year info mm,stump,,what year raptor,Anyone know /have direct link..yamaha parts in uk?
im not lazy just stuck,, want to price the job up while the bikes laid up for winter
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Re: 660 Check it before it goes BANG!!!

Postby cat » Sun Jan 20, 2013 2:20 pm

freaking google it man! No wonder Bill got so frustrated. :x

http://lmgtfy.com/?q=yamaha+%221S3-11536-00%22

and if you don't like all the american /raptor links in the results, then read the thread that David posted the link to and order the XT660R/X part.
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Re: 660 Check it before it goes BANG!!!

Postby duncmac » Sun Jan 20, 2013 4:34 pm

For the UKers here the following might be helpfull.

From Bill post

balancer gear Raptor 1S3-11536-00
Balancer gear XT660R 5VK-E1536-00 £74.76 [url]http://www.yamahamotorcyclespares.co.uk/spares/search.asp?search=5VK-E1536-00&genuine=&aftermarket=&universal=1&uID=0
[/url]

Slipstream tuning also do this 16- Solid balancer gear £100
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