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GIABO **
Age: 50 Zodiac: Joined: 04 Sep 2011 Posts: 71 Location: cambridgshireshireshire
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Posted: Tue Sep 20, 2011 23:51 Post subject: alternator failure? |
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stop chucking your alternator and treat your wallet to a day off.
ive done this on some german cars i used to have and the pajs alternator is built in the same manner..havnt even looked at my own yet because the previous owner just put a new one in before i bought it 2 weeks ago!
anyway, instead of spending £130+ on a new alternator, spend 5 minutes calling your parts person and order a new voltage regulator/alternator brushes for the princely sum of £15! seriously easy job to do, alternator off, plastic end unscrews, under there in in the centre are 2 screws holding the regulator and brushes.
..and that is it! as long as the alternator spins ok and isnt rusted out etc just buy the brushes/regulator (one piece) and then proceed to kick yourself having spent vast fortunes on previously spent alternators! )
haynes manual chapter 5 engine electrical systems part 16 init |
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Posted: Tue Sep 20, 2011 23:51 Post subject: Google Ads keep the POCUK free to join! |
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GIABO **
Age: 50 Zodiac: Joined: 04 Sep 2011 Posts: 71 Location: cambridgshireshireshire
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Posted: Wed Sep 21, 2011 0:08 Post subject: |
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actually-screw that-on mitsubishi alternators you can even just change the brushes by themselves! £3.99 on ebay or £130.00 for new alternator? |
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REVOGEL LifeTime Member
Age: 84 Zodiac: Joined: 23 Dec 2006 Posts: 4276 Location: Cent. Amelias. Reg 10. Guyana South America
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Posted: Wed Sep 21, 2011 15:53 Post subject: |
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Aword of warning here. Do NOT allow engine degreasant to get in alternators. It melts the insulating laquer on the coils. I have heard WD40 does the same but unproven. Better safe than sorry. |
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gegs750k4 ********
Age: 51 Zodiac: Joined: 24 Dec 2008 Posts: 6513 Location: Wigan
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Posted: Wed Sep 21, 2011 17:19 Post subject: |
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REVOGEL wrote: |
Aword of warning here. Do NOT allow engine degreasant to get in alternators. It melts the insulating laquer on the coils. I have heard WD40 does the same but unproven. Better safe than sorry. |
wd40 is a cracking de-greaser, when folks spray the alternator bearing with it it cures the squealing but dissolves the bearing grease.
i would rather spend the money, get it reconditioned and get the bearings done at the same time.
that way i get a bench test and a warranty. |
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assassin ********
Age: 64 Zodiac: Joined: 29 Jul 2009 Posts: 5077 Location: Wherever I Wander To -- Midlands
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Posted: Sun Sep 25, 2011 1:31 Post subject: |
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It also corrodes the copper. |
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paddyj LifeTime Member
Age: 50 Zodiac: Joined: 22 Mar 2008 Posts: 41 Location: glasgow
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Posted: Mon Nov 07, 2011 17:38 Post subject: |
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Can anyone give me a part number for these, Ive cross referenced all the alternator numbers but am struggling with brush numbers |
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pajrabbit **
Age: 111 Zodiac: Joined: 12 Oct 2011 Posts: 100 Location: englandshire
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Posted: Wed Nov 09, 2011 22:48 Post subject: |
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just find out what your alternator is and youll find them easy enough. |
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pajrabbit **
Age: 111 Zodiac: Joined: 12 Oct 2011 Posts: 100 Location: englandshire
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paddyj LifeTime Member
Age: 50 Zodiac: Joined: 22 Mar 2008 Posts: 41 Location: glasgow
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Posted: Thu Nov 10, 2011 12:57 Post subject: |
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Cheers Paj, found them eventually, it seems people aren't repairing alternators and starters any more , throw away society I suppose. but anyway this lot do them http://www.autoelectrics.net/alternator_parts.html part number 140817, for 6 quid.
Alternatively SAS components do the whole regulator, part/catalogue number 10791 for about 35 quid.
Hope this helps anybody else! |
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Selkent1 *****
Age: 49 Zodiac: Joined: 22 Jan 2010 Posts: 539 Location: Kent
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Posted: Sun Jan 22, 2012 18:24 Post subject: |
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Got the feeling mines on its way out, anyone got some pics to show the process?
Phil |
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Roadrunner2110 ******
Joined: 08 Dec 2010 Posts: 2471
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Posted: Tue Feb 17, 2015 0:20 Post subject: |
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Spray WD40 on bare metal and watch it go rusty ................. rust sets in almost immediately but many believe it takes ages. I believe the lubricating powers of WD40 are a fallacy and it's defo more like a degreasant/degrippant.
I believe in spray grease and chain wax for protection of shafts etc, silicon or rubber spray on door rubber seals and use WD40 as a degrippant/penetrating fluid on seized nuts and bolts. Read the contents safety data sheet of both they are near identical I still prefer Plusgas though. |
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trekker ********
Age: 83 Zodiac: Joined: 25 Jun 2012 Posts: 5202 Location: Zimbabwe
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Posted: Tue Feb 17, 2015 18:55 Post subject: |
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As is often the case, there can be more to this simple repair than replacing a diode and brush pack.
Definitely replace the bearings, and the slip ring end bearing is not so easy to remove from the shaft.
Slip rings should be skimmed.
I overhauled my original alternator, fitting new brushes and bearings, only to find later the charging dropped away completely when the engine revs reached 2800. As we were 1500 km into a camping trip and in need of a reliable charge for at least another month, I had the alternator stripped at an auto shop, only to find the slip rings had oval wear, and this was causing the brushes to bounce, and the charge to cease. |
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