Sv1000 magneto

[asteer17]

Hi,

My Sv1000s (2004) is losing charge, ive been told its either the regulator or alternator. My 'mechanic' reckons its the magneto and says the magnets are loose on the magneto itself, i bought a fairly new 2nd hand part and he says thats faulty to cos they are slightly loose too. Im not sure he knows what he's on about :s

Can anyone tell me if the magnets are supposed to be slightly loose and if there are any known common faults for sv's to loose their charge, im fairly new to all this and have not had the 2nd hand bike very long,a month infact :confused:

[Dave20046]

Can you get hold of a multimeter? there's a simple test to check whether it's just the reg/rec or the more expensive stuff.

[asteer17]

Ive been told its producing charge but not quite enough to charge the battery, also ive been told the alternator is fairly new.

my 'mechanic' (dodgey back street garage) told me @1000 rpm its 10v and 6000rpm its 12v.

Ive spoken to a few authorized suzuki shops and they advised me its probably the reg/rec and they usually go after 5yrs approx.

Does this help?:confused:

[Dave20046]

Regrec can go over any time period, independant garages are not necesarily dodgy.

If you have a multimeter (you can get them for £5 b&q style) then you can find out for sure. If not then the only other option I can think of is leaving it in your mechanics hands (or another mechanic)

[asteer17]

Thing is, i dont think he's too sure what he's on about, ive rang major bike shops and they are saying diff stuff to him, also he will not order parts to sort it out if its not the part needed, surely if he's running a business he should know what wrong and be able to sort it and order the right parts?? he's had the bike for 8 days now and im still no nearer to getting it back

Help.....

[asteer17]

do u know about the magnets on a magneto?

[asteer17]

he wants me to pop into his shop tomorrow to look at the magneto, can you tell me what to look for regarding multi meter readings to tell what the problem is like u said in your first post please??

[asteer17]

when i say he's the mechanic, he owns the shop (fairly young chap) and the 2 mechanics cant barely talk english

[Dave20046]

he wants me to pop into his shop tomorrow to look at the magneto, can you tell me what to look for regarding multi meter readings to tell what the problem is like u said in your first post please??
To rule out the reg rec, when the reg rec is unplug the reg rec (3 plugs if I recall correctly) you need to measure the a/c voltage across the plugs. i.e you have plug's a,b & c. measure between a-b, b-c and a-c all readings should be above 75 (or possibly 85 my memory ain't brilliant) mine was in good working order and went well over 150. This means it's most likely your regrecs ****ed as it suggests everything pre regrec is working well.

As per magnets I haven't got a clue, never had a alternator or anything go on me only a reg/rec.
*touches wood*

[Dave20046]

The above info is true (from what I remember anyway) for my 650 atleast , 1000s could be different. If you want to know if he's having you on ask him what readins he was getting from the battery, and from the alternator (3 wires going to the reg rec I mentioned) he should know if he's decided to strip down the magneto or whatever.

[asteer17]

so if the reg/rec is producing the right volts, what can he check or should he check after that? do u know? thanks so much for your help so far.

also, the horn on the bike doesnt work, ive been told by a few suzuki owners that if the horns wires are earthing this would take the charge
??:confused:

[yorkie_chris]

Loose magnets w00t?

Are you on about the alternator rotor? You not think these being loose may lead to some small problems at 10000rpm?



You should not have to be telling a paid mechanic what troubleshooting to go through. They sound like a bunch of cowboys. When you are doing the work on it yourself I will tell you what to check and how to do it!

[asteer17]

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?VISuperSize&item=400061601798thanks for your reply chris (need all the advice i can get here) ive been into the shop today and the 6 large rectangle magnets that it around the inside of the magento are loose, they can be pulled off, i rang suzukiGB and they said this is not right they need to be attatched permanently to the side of the magento. the garage/shop is ordering a new magneto (think there around £190) brand new and when it arrives they are taking it from there.

normal practise?

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?VISuperSize&item=400061601798

[Spanner Man]

Good afternoon all.




The mere fact that he refered to it as a Magneto points to a little incompetence. I suspect he's refering to the alternator rotor. However, the magnets shouldn't be loose. So after the fitment of the new one, do an AC voltage test on the alternator.
Un-plug the regulator rectifier, & with the engine running you should have around 75 volts AC between any pair of the three feed wires that come from the alternator. (They will be either yellow or white).
Make sure none of the three wires have continuity to earth, & finally check for continuity between any of the three wires & its two counterparts. There should be little or no resistance between them.

With the battery disconnected, check for continuity between the red output wires on the regulator plug, & the positive battery lead. Again, little or no resistance should be found.

If the above all checks out ok then your regulator is probably goosed.



Cheers.

[asteer17]

Hi spanner man,

Thank you for your input, the new part is on order and hopefully arrive tomorrow.

Were those tests for the reg/rec and for the alternator? From what he tells me the generator is fairly new and the magneto/alternator rotor needed replacing, so as i said thats on order.

once this is fitted i will make sure he does all the checks u pointed out (hopefully he should know himself)

ps: if only i knew about your shop, as im only in chiswick, and im sure if i left it in your hands it wouldnt still be in the garage 9 days later with a part on order that he wanted me to order myself :confused:

any more feedback is greatly appreciated :D

[yorkie_chris]

What do you mean the generator is fairly new? You are looking at half of it there. Other half is coils of wire which fit inside that part and do not spin around, they are bolted to side casing.

[asteer17]

sorry im still learning all this, only ever had a sv650s b4 and it was new and never needed any work done to it while i had it.

which parts are the rotor/stator (i could do with an exploded diagram so i knew what i was talking about more and to help you guys out)

anyone got a dummies for mechanics book lol?

Trust me i WILL NOT ever be going back to this shop, never had any problems like this b4 in 8 yrs

[yorkie_chris]

http://www.alpha-sports.com/spst/1997%20TL1000S/32.gif

1 is stator coils
2 is rotor with magnets fixed inside

[asteer17]

Ah right, now i know what im looking for.

From what i can make out, the stator coils are in very very good condition but ihave had to change the alternator rotor cos the magnets around the outside were loose and you could pull them off.

So once this is fitted, he's to run tests on it yes? n if thats giving out the correct readings then test the voltage from the battery with the engine running and at different rpms? to detect if the bike is producing enough volts to charge the battery?

[yorkie_chris]

very very good condition? :-P
They will look nice and clean because they are inside engine!

If they go wrong then they can either look fine, or be obviously burnt, corroded, on fire etc. Big check for stator is to use multimeter, there should not be continuity to earth.

[Spanner Man]

Hi spanner man,

Thank you for your input, the new part is on order and hopefully arrive tomorrow.

Were those tests for the reg/rec and for the alternator? From what he tells me the generator is fairly new and the magneto/alternator rotor needed replacing, so as i said thats on order.

once this is fitted i will make sure he does all the checks u pointed out (hopefully he should know himself)

ps: if only i knew about your shop, as im only in chiswick, and im sure if i left it in your hands it wouldnt still be in the garage 9 days later with a part on order that he wanted me to order myself :confused:

any more feedback is greatly appreciated :D


Good evening all.


The tests I detailed earlier are for the alternator stator, & the general wiring between the Regulator & the battery.

If the alternator & the wiring tests are ok, it's pretty safe to assume they Regulator has had it.


Cheers.

P.S. At least you know about me now though eh!:D If you're still having problems with it, or for anything else, please give me a call.

[Sid Squid]

Not as widely known here, but over the water a few SV1000s have experienced loose magnets in the rotor, they run OK 'cos the rotor spinning holds the magnets hard to the rotor.

Stator failures are rare but I've had two SV1000s with duff alternators recently. Reg/recs had been replaced by 'knowledgeable people' in both cases - and of course hadn't cured the fault, because even if it's the widely quoted problem du jour what's actually required is someone able to give a proper diagnosis of what's wrong.
I'm sure it's happened, but I've not seen an SV1000 with a duffed reg/rec yet.

[yorkie_chris]

Someone occasionally posts an absolutely ace flow chart of charging system maladies and remedies, any idea where it is?

[asteer17]

Hi all,

I know this is going to sound silly (but as i said im trying to learn lol) but gpoing back to the stator tests, could you explain continuity to earth and how to diagnose if the stator is ok or not.

Thanks people :)

[Taipan]

Someone occasionally posts an absolutely ace flow chart of charging system maladies and remedies, any idea where it is?


This one?

http://www.electrosport.com/technical-resources/library/diagnosis/pdf/fault-finding-diagram.pdf