Brutale 910S battery charge warning light on/alternator prob? - MVAgusta.net
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 12 (permalink) Old 07-14-2013, 06:12 AM Thread Starter
Established Member
 
claudiop's Avatar
 
Join Date: Nov 2012
Location: Adelaide, South Australia
Posts: 100
Brutale 910S battery charge warning light on/alternator prob?

Hi

My 2006 Brutale has 23,000km and has been running flawlessly. A couple of days ago, I turned the ignition on and the instrument display lit up normally. I started the motor but the battery charge warning light stayed steady on. I revved it a few times and also took it for a short run around the block but still on permanently/no flickering. The bike has a new battery and I gave it a charge overnight. Today did the fault checking as per the manual at Sect E pp12-19. Checked/cleaned the 4-way connector, earth leads, battery terminals and all fuses including the 40A recharge fuse. With ignition on but motor not running, the voltages at the 4-way connector are: pin1/S terminal=12.68V; pin2/lg terminal=12.62V; pin4/L terminal=11.61V and B terminal=12.78V (same as at battery terminals). I plugged the connector and put everything back to normal, however, with the motor running, the charge warning light is steady on and the voltmeter across the battery terminals is only 12.4V and doesn't change when revving the motor.

I've got a bad feeling that it's the alternator...

I'm a reasonable home mechanic and have got most if not all the tools I'll need...a few questions:
- the manual says that the generator/alternator and the IC Regulator/rectifier is enclosed in the one component. Is this correct or is the 'IC Regulator' somewhere else eg the SPU unit?
- can the alternator be worked on and parts such as brushes/diodes/the IC regulator unit be bought/replaced?
- if I were to work on the alternator, it looks as if i'll need to drop the motor out of the frame. How difficult is this? Any special things to watch out for etc?
-any suggestions of where I might source a complete alternator/IC regulator unit both new or second-hand?

any suggestions much appreciated, cheers Claudio

Brutale 910S 2006, KTM SMT 990 2010, Suzuki V-Strom DL650A ABS (ex BMW R1150RT 2002)
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
claudiop is offline  
Sponsored Links
Advertisement
 
post #2 of 12 (permalink) Old 07-14-2013, 07:26 AM
Senior Member
 
silentservice703's Avatar
 
Join Date: Feb 2008
Location: Duxbury, MA, USA
Posts: 20,823
Send a message via Skype™ to silentservice703
Hi Claudio! The alternators can be worked on and rebuilt. If you search, probably in Maintenance, you will find a description of alternator removal, although it is for an F4. The workshop manual, I haven't checked will probably describe the process in detail.

Since you just replaced the battery and then the problem appeared, make sure you got ALL the wires hooked up to the proper battery terminals before you go tearing things apart. Many an issue has been caused by battery replacement because of things like revers polarity and not getting all the leads back on.

Gapalicious 2019 at
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
from OCTOBER 2-6, 2019

Call (423) 519-2000 or (423) 253-6213 to reserve your Riverfront Cabin. PM me for The Crow's Nest reservation!!!

Email/Paypal:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


My personal Cell Phone: (781) 223-3020


'07 F4 312R, '10 B4 1090RR, '15 B3 800RR
'07 Ducati Monster S4Rs, '07 Ducati Monster 695
2010 Harley Davidson Ultra-Classic Electra-glide CVO FLHTCUSEBLK
'63 Honda C100A Cub
'61 MVA TRA 125
silentservice703 is offline  
post #3 of 12 (permalink) Old 07-14-2013, 07:51 AM
Senior Member
 
zvez's Avatar
 
Join Date: Feb 2007
Location: georgia
Posts: 1,115
Also, double check no ground wire corrosion which could also cause it.

Chris
2014 B3 Brutale 800
That's Giuliano Maoggi and the start of the 1956 Motogiro d'Italia.
zvez is offline  
Sponsored Links
Advertisement
 
post #4 of 12 (permalink) Old 07-14-2013, 09:43 AM Thread Starter
Established Member
 
claudiop's Avatar
 
Join Date: Nov 2012
Location: Adelaide, South Australia
Posts: 100
hi guys

thanks for the replies. I should clarify that when I said new battery, I should have said that I replaced the battery only 3 months ago. The bike's been running perfectly since then.

Just now remembered that I cleaned the bike with detergent/water and then lightly hosed it down last Thurs. I didn't start the bike then but the problem appeared the following day when I tried to start it. While washing the bike I tried to avoid squirting the hose directly into the motor/alternator area but seems suspicious...hmmm...post hoc ergo propter hoc aka suspicion of cause and effect....I would have thought that any moisture/water droplets in the alternator innards would have dried out by now

I did check for tightness both the battery terminals and the ground wire/earth terminal on the motor. I'll go over it again by undoing the bolts and cleaning everything just in case some corrosion has got in there

tnx and cheers, Claudio

PS just spotted the other post "Alternator Diagnosis Suggestions" http://www.mvagusta.net/forum/showthread.php?t=54752 and will check out those suggestions tomorrow

Brutale 910S 2006, KTM SMT 990 2010, Suzuki V-Strom DL650A ABS (ex BMW R1150RT 2002)
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by claudiop; 07-14-2013 at 10:46 PM.
claudiop is offline  
post #5 of 12 (permalink) Old 07-14-2013, 10:37 PM
MRT
Senior Member
 
MRT's Avatar
 
Join Date: Sep 2009
Location: Sunny Queensland, Aus
Posts: 2,019
Check out this thread Claudio

http://www.mvagusta.net/forum/showth...ight=regulator

I took my alternator to a few auto leckies and none of them wanted to touch it because it was out of a bike. I found one who was preparred to at least look at it, I printed that thread out for them as a guide, but they ended up saying they couldn't do it. Thing is, it's a denso alternator and it physically looks identical to the alternator on our toyota forklift. I think auto sparkies just want to change batteries and light bulbs these days.

So, as that thread shows, it can be done....you just need to find a tradesman who is preparred to have a go.
MRT is offline  
post #6 of 12 (permalink) Old 07-14-2013, 11:06 PM Thread Starter
Established Member
 
claudiop's Avatar
 
Join Date: Nov 2012
Location: Adelaide, South Australia
Posts: 100
an update...today cleaned/de-oxidized all the grounds/fuses/etc. From batt negative i'm seeing less than 0.01ohms when touching alternator/starter/motor/frame so no resistance there. Still only get 12.5V across the batt terminals with motor running at various revs.

Looks a faulty alternator/regulator eg Sect E p16 an open circuit at the rotor coil probably the brushes.

Some questions:
- can the ECU diagnostics error codes give a detailed indication of my alternator/regulator fault?
- to remove the alternator do I have to take out the motor from the frame?

cheers, Claudio

Brutale 910S 2006, KTM SMT 990 2010, Suzuki V-Strom DL650A ABS (ex BMW R1150RT 2002)
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
claudiop is offline  
post #7 of 12 (permalink) Old 07-14-2013, 11:19 PM
Senior Member
 
Join Date: Jun 2007
Location: Calga, NSW
Posts: 1,236
There are some instructions somewhere here for removing the alternator without having to remove the engine from the frame, I believe the trick it so remove the starter motor but never actually got round to doing it myself.

If you need an alternator I have a nearly new one I bought to put on my 750 but no longer need it.
rsawkins is offline  
post #8 of 12 (permalink) Old 07-14-2013, 11:22 PM Thread Starter
Established Member
 
claudiop's Avatar
 
Join Date: Nov 2012
Location: Adelaide, South Australia
Posts: 100
Quote:
Originally Posted by MRT View Post
I took my alternator to a few auto leckies and none of them wanted to touch it ... I think auto sparkies just want to change batteries and light bulbs these days.

So, as that thread shows, it can be done....you just need to find a tradesman who is preparred to have a go.
Damn...that could be tricky in ole' rainy/cold Adelaide

Reading the other thread made me feel even more depressed..looking more and more like i might have to take it to the local dealer and pay through the nose so I can get my bike running again some time soon....the only upside I can see is that I can keep the dudded alternator and try repairing it so that i have a spare, maybe..

thanks for the info

Brutale 910S 2006, KTM SMT 990 2010, Suzuki V-Strom DL650A ABS (ex BMW R1150RT 2002)
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
claudiop is offline  
post #9 of 12 (permalink) Old 07-14-2013, 11:27 PM Thread Starter
Established Member
 
claudiop's Avatar
 
Join Date: Nov 2012
Location: Adelaide, South Australia
Posts: 100
Quote:
Originally Posted by rsawkins View Post
There are some instructions somewhere here for removing the alternator without having to remove the engine from the frame, I believe the trick it so remove the starter motor but never actually got round to doing it myself.

If you need an alternator I have a nearly new one I bought to put on my 750 but no longer need it.
Yeah, i saw that at Sect E, pp32-33. That's what I was wondering...if it's possible to get the starter motor out it might be possible to get the alternator out too...anybody?

Ur 750 alternator sounds good...would need to be sure that it fits my 910S?

Brutale 910S 2006, KTM SMT 990 2010, Suzuki V-Strom DL650A ABS (ex BMW R1150RT 2002)
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
claudiop is offline  
post #10 of 12 (permalink) Old 07-15-2013, 12:02 AM
MRT
Senior Member
 
MRT's Avatar
 
Join Date: Sep 2009
Location: Sunny Queensland, Aus
Posts: 2,019
Quote:
Originally Posted by claudiop View Post
Yeah, i saw that at Sect E, pp32-33. That's what I was wondering...if it's possible to get the starter motor out it might be possible to get the alternator out too...anybody?

Ur 750 alternator sounds good...would need to be sure that it fits my 910S?
Yep, pull the starter motor, and if you jiggle the alternator down and foward, and hold your toungue just right, it comes out. I think the the other thread quoted above shows a minor mod that allows you to get it back in much easier.

EDIT: It's this thread - http://www.mvagusta.net/forum/showth...rnator+removal

I got a second hand alternator from a 750 F4 and all the numbers were the same.....I am 99.9999% sure all the alternators from the earlier generation bikes are the same.

Don't be put off by my lack of success finding someone to fix mine, it says more about the tradesmen than it does about the alternator.
Just keep trying 'til you find someone.....I didn't have the time as I was taking the bike on a trip and had to get her running asap.

Good luck!

Last edited by MRT; 07-15-2013 at 12:04 AM.
MRT is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to use all of the features of the MVAgusta.net site, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome