Voltage reg. = brushes - Saab 900 Bulletin Board - Saabnet.com
The banner above is an advertisment - if it asks you to download software, please ignore.
Site News -
4/9 Saab Owners' Convention Day Pass Raffle |
3/26 M Car Covers (by State of Nine)
[General |
Members |
C900 |
9000 |
NG900 & OG93 |
93 |
95 |
NG95 |
99 |
Sonett |
Vintage Models |
Clubs |
Other Cars |
FAQs |
Gifts |
Member Photo Galleries |
Member Directory |
Classifieds |
Manuals |
*Buddy Registry |
*Mileage Registry |
Polls |
What's New |
Raffle |
Photo of the Month |
Sponsors]
[Main C900 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Voltage reg. = brushes
Posted by RayF (more from RayF) on Wed, 4 Jun 2014 13:26:22
In Reply to: Re: New battery, no charging, Lee, Tue, 3 Jun 2014 09:38:57
Members do not see ads below this line. - Help Keep This Site Online - Signup
Lee - - From everything I've read the Bosch voltage regulators in these alternators are perpetual. They include the brush holders and brushes, made in one piece. The brushes DO wear.
The brushes, usually replaced in a piece with a new voltage regulator, are the most common failure item on an alternator. They're a wear item and can actually be bought separately and installed by soldering, for those savvy enough and cheap enough.
If the alternator is not charging, you should be seeing a battery warning light on the dash, as well as experiencing the battery gradually dying while running. Are you seeing that warning light?
If the light is on, or flickering, or coming on and then going off, probably you have bad brushes. Or, as others have said, the ground wire from alternator case to the head is missing or internally broken.
On very high mileage alternators, which most originals now often are on these cars, the copper slip rings where the brushes run are often ridged or deeply grooved and that can also make trouble and short life for new brushes.
The voltage regulator with brushes can actually be changed without anything other than one very long phillips screwdriver, leaving alternator in place, after disconnecting the negative battery cable. Screwdriver needs to be angled, and held firmly down into the screw head.
But first you should know if that's the problem. Everyone says not to do this but my favorite test of whether an alternator is charging is, start car, loosen negative battery cable and twist it loose and pull it off, briefly. If the car dies when it stops contacting the battery post, the alternator is not charging.
Another possibility why a car won't crank is a badly corroded positive battery cable, up inside the insulation. Or just cable clamp very corroded and not fitting the post properly from being deformed by overtightening.
posted by 71.173.8...
Posts in this Thread:
- AAA again this morning, stopped running, Lee, Mon, 2 Jun 2014 11:43:39
- Re: AAA again this morning, stopped running, Bill N, Fri, 6 Jun 2014 13:54:56
- Re: AAA again this morning, stopped running, BTG88, Mon, 2 Jun 2014 18:12:10
- Re: AAA again this morning, stopped running, Justin VanAbrahams , Mon, 2 Jun 2014 12:05:06
Members do not see ads below this line. - Help Keep This Site Online - Signup
Post a Followup
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
StateOfNine.com
|
SaabClub.com
|
Jak Stoll Performance
|
M Car Covers
|
Ad Available
|
Random Saabnet.com Member Gallery Photos (Click Image)
This is a moderated bulletin board - Posting is a privilege, not a right.
Unsolicited commercial postings are not allowed (no spam). Please, no For Sale or Wanted postings, SERIOUSLY.
Classifieds are to be listed in The Saab Network Classifieds pages.
This is a problem solving forum for over 250,000 Saab owners, so expect to see
problems discussed here even though our cars are generally very reliable. This is not an anything goes
type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the
Saabnet.com Mission and Purpose Page. Please remember that you are
not anonymous. Site Contact | Site Donations | Other Sites by SP -
Poverty2Prosperity.org | Run Club Menlo Park | ScreenBot
Site Members do not see red text instructions, bottom of the page anchor ads, or box ads.
Click here to see all
the Site Membership Benefits!