Lancia Beta Forum
August 20, 2019, 05:39:27 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Beta Forum Key rings and car stickers now available here : www.lanciabetaforumshop.co.uk/
With all profits going to the forum, many thanks to Mark @ www.lanciabetaparts.co.uk
 
   Home   Help Contact Admin Search Calendar Gallery Articles Login Register  
Pages: [1]
  Print  
Author Topic: Alternator issues  (Read 2848 times)
0 Members and 1 Guest are viewing this topic.
smithymc
Hero Member
*****
Offline Offline

Posts: 511


« on: February 16, 2014, 06:42:12 PM »

Gave the chocolime her fortnightly start-up yecterday and noticed the alternator light stayed on.

Belt a bit slack (a new one), tweaked it but no improvement.

I suppose checking and cleaning the connections is the next step but how do I evelaute the alternator ( its a Marelli) as a unit?

Any source of new ones- or soemone who re-builds them?- I seem to remember having one re-built years ago.

Thanks

Mark
Logged
Neil-yaj396
Legendary Member
******
Offline Offline

Posts: 1434


1979 1300 Coupe 1983 2000ie Coupe


« Reply #1 on: February 17, 2014, 07:54:40 AM »

Mark

I think there's an alternator on eBay at the moment. If you Google 'rebuild' there's plenty of people who fix them too. Strange coincidence about you having just fitted the belt though? Did anything get damaged or disconnected when the alternator was slackened off etc.?
Logged
smithymc
Hero Member
*****
Offline Offline

Posts: 511


« Reply #2 on: February 17, 2014, 08:17:08 AM »

Neil

When I say 'new' belt, its the one I put on last summer with the water pump, to get her rolling for the mot, etc, so its done about 600 miles- due for a tweak probably.

Mark
Logged
Hawk
Hero Member
*****
Offline Offline

England England

Posts: 448



« Reply #3 on: February 17, 2014, 10:24:50 AM »

Forget the light for the moment and double check all of the connections.  Then put a multi across the battery - is it charging?

Logged
smithymc
Hero Member
*****
Offline Offline

Posts: 511


« Reply #4 on: February 17, 2014, 01:02:54 PM »

I presume that if it is charging that the voltage will be higher than the static battery voltage?

Hope that makes sense.

Mark
Logged
Hawk
Hero Member
*****
Offline Offline

England England

Posts: 448



« Reply #5 on: February 18, 2014, 10:48:42 AM »

Yes - before you start you really you want a battery to read about 12.5 (but anywhere between 11.7 and 12.7 is acceptable to crank the engine over).

When the engine is running, a correctly working charging circuit should give readings of 13.5 to 14.5 ish - you may have to increase the revs to get this.  

« Last Edit: February 18, 2014, 10:51:52 AM by Hawk » Logged
smithymc
Hero Member
*****
Offline Offline

Posts: 511


« Reply #6 on: February 18, 2014, 02:41:38 PM »

Thanks - I'll give it a go at the weekend.
Logged
Hawk
Hero Member
*****
Offline Offline

England England

Posts: 448



« Reply #7 on: February 24, 2014, 05:20:09 PM »

How did you get on?
Logged
smithymc
Hero Member
*****
Offline Offline

Posts: 511


« Reply #8 on: February 25, 2014, 10:13:33 AM »

12.4 volts static, falling to 11.7 volts with the engine running- so that seems pretty clear the alternator contributes nothing.

Mark

Logged
mtulloch
Sr. Member
****
Offline Offline

Posts: 122



« Reply #9 on: February 25, 2014, 10:07:46 PM »

Whip it off & check the brushes first. Only cost a couple of quid to replace them.
Logged
Hawk
Hero Member
*****
Offline Offline

England England

Posts: 448



« Reply #10 on: February 27, 2014, 01:17:14 PM »

Before you remove teh alternator, check that you haven't knocked the 'exciter' wire off Wink
Logged
smithymc
Hero Member
*****
Offline Offline

Posts: 511


« Reply #11 on: March 01, 2014, 07:58:37 PM »

Have fiddled with connections to no avail,so took the unit off today- brushes and slip rings look fine, bearings smooth.

So will take it to have it bench tested before putting it back on.

Mark
Logged
smithymc
Hero Member
*****
Offline Offline

Posts: 511


« Reply #12 on: March 03, 2014, 12:55:29 PM »

It turns out it is the rectifier that is broken, so now the search starts for a new one.

Any suggestions?

As it happens the garage have the regulator in stock - as usual, that is fine on mine!

Mark
Logged
thecolonel
Guest
« Reply #13 on: March 03, 2014, 08:54:02 PM »

Rectifier pack is soldered in place, quite tricky
Probably best to get it rebuilt by a professional.
Logged
smithymc
Hero Member
*****
Offline Offline

Posts: 511


« Reply #14 on: March 05, 2014, 01:41:37 PM »

Bullet has been well any truly bitten and I now have a Bosch replacement to fit- which the box says is for a Ferrari 400 or 512.

Mark
Logged
smithymc
Hero Member
*****
Offline Offline

Posts: 511


« Reply #15 on: March 12, 2014, 03:03:14 PM »

New unit on - looks very smart (for an alternator) and gives out nice healthy charge.

Roll on next week when I can un-Sorn her and get amongst this nice weather.

Mark
Logged
Pages: [1]
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines
SMFAds for Free Forums
Valid XHTML 1.0! Valid CSS!