• Ciao Guest - You’ve landed at the ultimate Guzzi site. NEW FORUM REGISTRATIONS REQUIRE EMAIL ACTIVATION - CHECK YOUR SPAM FOLDER - Use the CONTACT above if you need help. New to the forum? For all new members, we require ONE post in the Introductions section at the bottom, in order to post in most of the other sections. ALWAYS TRY A SEARCH BEFORE STARTING A NEW TOPIC - Most questions you may have, have likely been already answered. DON'T BE A DRIVE-BY POSTER: As a common courtesy, check back in and reply within 24 hours, or your post will be deleted. Note there's decades of heavily experienced Guzzi professionals on this site, all whom happily give endless amounts of their VALUABLE time for free; BE COURTEOUS AND RESPECTFUL!
  • There is ZERO tolerance on personal attacks and ANY HYPERLINKS to PRODUCT(S) or other competing website(s), including personal pages, social media or other Forums. This ALSO INCLUDES ECU DIAGnostic software, questions and mapping. We work very hard to offer commercially supported products and to keep info relevant here. First offense is a note, second is a warning, third time will get you banned from the site. We don't have the time to chase repeat (and ignorant) offenders. This is NOT a social media platform; It's an ad-free, privately funded website, in small help with user donations. Be sure to see the GTM STORE link above; ALL product purchases help support the site, or you can upgrade your Forum profile or DONATE via the link above.
  • Be sure to see the GTM STORE link also above for our 700+ product inventory, including OEM parts and many of our 100% Made-in-SoCal-USA GTM products and engine kits. In SoCal? Click the SERVICE tab above for the best in service, tires, tuning and installation of our products or custom work, and don't miss our GT MotoCycles® (not) art on the BUILDS tab above. WE'RE HERE ONLINE ONLY - NO PHONE CALLS MADE OR RECEIVED - DO NOT EMAIL AND ASK QUESTIONS OR ASK TO CALL YOU.
  • Like the new V100, GuzziTech is full throttle into the future! We're now running on an all-new server and we've updated our Forum software. The visual differences are obvious, but hopefully you'll notice the super-fast speed. If you notice any glitches or have any issues, please post on the Site Support section at the bottom. If you haven't yet, please upgrade your account which is covered in the Site Support section or via the DONATE tab above, which gives you full site access including the DOWNLOADS section. We really appreciate every $ and your support to keep this site ad-free. Create an account, sign in, upgrade your account, and enjoy. See you on the road in 2024.

V7 Classic charging issues.

P

Penis Rotor

GT Godfather!
Joined
Oct 28, 2008
Messages
2,833
Location
Bungendore, NSW Australia
V7 Classic etc, charging issues.

Last couple of months I've had several V7s through withcharging problems/blown reg/recs.

FAilures seem to come in two forms. Either the machine grossly over-charges and boils the battery before blowing the reg/rec. (My guess is that this is down to bad earth refference. Remove and check/clean the earth straps betwixt battery and block and ensure the block connector from the reg/rec to the loom is clean and tight.

The second one the bike stops charging because the block connector between the phases of the alternator and the reg/rec melts. Sometimes this will blow the reg/rec. Sometimes not. I had a woman in two days ago with this problem and when I shunted around the melted connector everything was honky-dory again!!!!

Worth checking and doing a bit of preventative maintenance on, I also ran an extra earth from the body of the reg/rec to the battery negative post. On earlier versions of the Ducati system this was important as the Reg/rec earthed through the frame. with the V7 system I'm not so sure but it won't do any harm!!!

Pete
 
As usual Pete Thanks for the Heads Up, My V7C will get a going over along with your recommendations !
 
The second one the bike stops charging because the block connector between the phases of the alternator and the reg/rec melts.
Click to expand...
That happened to a guy that came to bike week at night with his electric vest turned on. We made a heavy duty connector up out of automotive stuff at Camp Carlo.. :D As far as i know, it's been a permanent repair.
 
Thanks Pete.

I recall someone saying a connector in their Breva or V7C charging system melted and had to be replaced. He thought water could have gotten in and shorted it, but that was just his guess.

I'm surprised the connectors are such a weak link. I'll look at mine with a critical eye.

Joe
 
Thanks Pete :)

I have some checking to do
(22.000Km without any issues and I want to keep it that way)

Christiaan
 
pete roper said:
V7 Classic etc, charging issues.

Worth checking and doing a bit of preventative maintenance on, I also ran an extra earth from the body of the reg/rec to the battery negative post. On earlier versions of the Ducati system this was important as the Reg/rec earthed through the frame. with the V7 system I'm not so sure but it won't do any harm!!!

Pete
Click to expand...

Pete, did the troublesome rec/reg earths change on recent models, so that poor earths are not an issue?

I checked the V7C wire diagram, and it shows two wires to earth for the reg/rec. On the bike I can see the reg/rec earth wires (if you trust the color codes). I'm not sure where they earth to, but it looks like it grounds (earths) to a strap connected to the battery neg side, both joined by a bolt on the right side of the engine, behind the cylinder.

Am I right in guessing the factory solved the earlier problems, where earlier reg/rec's were earth to the frame, instead of this battery connection?

Joe
 
Thanks for the info Pete, I know this guy who had a quota, and he blew his rectifier, probably down to a bad ground.... strange thing is, he builds and flys airplanes...... :twisted:
 
I had the same problem as one of Petes customers- on my v7 cafe loose conection in block between rectifier and the loom , caused it to arc knackered the rectifier and boiled the battery,at 2000 miles. This is my first post i have been lurking for couple years. just like to say thank you to Pete for all his humour and wisdom he puts on this site.All the best Jim.
 
jimf said:
I had the same problem as one of Petes customers- on my v7 cafe loose conection in block between rectifier and the loom , caused it to arc knackered the rectifier and boiled the battery,at 2000 miles. This is my first post i have been lurking for couple years. just like to say thank you to Pete for all his humour and wisdom he puts on this site.All the best Jim.
Click to expand...

Jim, where was the issue? Was it at the plastic multi-wire connector behind the rectifier?

It's hard to see that it would go bad. My connector is tied together by the factory, and it looks like a dry location.
 
Hello sign, one of the pins inside the connector block was loose,first connection between rectifier and the loom,hope this helps. Jim.
 
You must log in or register to reply here.
Back
Top