Replacing Alternator Brushes with Alternator still on the car - Page 6

burn5ie · 10th March 2015, 07:18

Quote:

Originally Posted by dave lincs

I have done it by not removing the alternator, was quite easy took just over an hour

Thanks Dave. Will let you know how it goes.

Jules · 10th March 2015, 07:54

Check the slip rings condition also as the last 3 we've attempted to repair on CDT's (all around 100k miles) have all been worn down through the copper to the cream coloured plastic underneath, so brush replacement would have been futile without also replacing the rings.

This is an off the car job for sure.

burn5ie · 14th March 2015, 15:52

The new regulator turned up this morning and is finally fitted. Took most of the day as my socket set just didn't have the right length extension bar to allow me to reach some of the nuts. All seems well now, although the battery warning light doesn't come on at all now even when starting. Hope this is nothing to worry about, as everything else seems good.
Thanks to everyone for help and advice. Picture shows new and old parts, I think the brushes were just about finished!!!

octopush · 5th October 2015, 13:28

Big thanks for the How To.

If i had to do it again it would only take about an hour not half a day.

Total cost 50p for brushes.

Found a great place for brushes and regulators they also test and fix alternators.

Power Components
Tel: 01243 378460
Emsworth, Hampshire

Mike Noc · 5th October 2015, 13:53

Quote:

Originally Posted by Jules

Check the slip rings condition also as the last 3 we've attempted to repair on CDT's (all around 100k miles) have all been worn down through the copper to the cream coloured plastic underneath, so brush replacement would have been futile without also replacing the rings.

This is an off the car job for sure.

Bit time consuming with it off too Jules.

Shawn · 5th October 2015, 14:46

Nice how to

Got a tip for making brush assembly easier,I tie them back with nylon thread,then when they are in place I snip it through to release them and pull the thread out

Jules · 7th October 2015, 23:10

Just a word of warning on re brushing these chaps.

Had quite a few now where the slip rings have deep grooves in them (especially if mileage over 100k)

Grooves can be so deep that the cream coloured plastic shaft underneath the rings shows through !

In such cases it is futile to just replace the brushes as the voltage o/p will be unstable.
Even voltage regulator damage could occur from the spiked input from the defective slip rings.

Ideally for longevity the rings and brushes should be changed simultaneously.
That obviously cannot be done in situ but I thought it worth pointing out.
I would suspect some re brushing attemps have not restored the expected 14.2 - 14.5 volts.

Another cause maybe the regulator pack itself or indeed the diode pack

Seanalf · 24th April 2016, 11:58

Just a quick footnote to this excellent guide...

If you have the 2 pin type alternator, the cover is held by 2x7mm bolts only, one at the 7 o'clock position, the other at the 1 o'clock. The brushes are held by only 3 7mm headed bolts as well so no annoying wax to remove. The single bolt on the inner part of the brushes is a bit awkward to get to, but reachable with extensions. Only 25mins to remove.

Certainly easier than the last one I did!

Paul, of Peterborough · 29th April 2016, 19:18

Quote:

Originally Posted by brianw

Well done that man.

I hope to get another alternator to overhaul to dothe same myself.

I have seen a number of posts regarding alternators since I changed my brushes a few weeks ago.
When changing I noticed some wear on the slip ring and did some googling.
other members may find the following usefull.

Brushes available here: (£2.99 aset delivered)
http://www.ebay.co.uk/itm/VALEO-ALTE...3D231384591971

Valeo brush replacement video:
http://www.youtube.com/watch?v=aVvPzwtxdrM

Kit including brushes Slip & bearings around £17 delivered)
http://www.ebay.co.uk/itm/NEW-REPAIR...item25753958e1

Valeo slip ringreplacementvideo:
http://www.youtube.com/watch?v=f56-26I6idc

I know the brushes are the correct size but am not sure on the listed slip ring kit.

Mike:Would you have the old slip ring available to confirm size?

Evening all, realise this is an old post but it served me well when doing both regulator (from DMGRS; excellent) and disappointingly, slip rings also (online, fine). You should be able to make a sensible decision on the slip rings once the regulator is removed, mine looked none too tidy in accordance with Jules' observations, at 180,000 miles or so. The brand new slip rings should measure up exactly as 10mm width (along the shaft), and 10mm diameter.

Hope helpful,
Paul.

nealeam · 20th January 2017, 13:15

Just removed my regulator from 2005 CDTI ZT Alternator in situ. Your post was invaluable.Hope it's only the regulator. I've ordered up a new regulator and a second hand alternator just in case but can sell that on if need be.

Just a note for later models with YLE000260 Alternator.

only 2 bolts holding cover on and there 7mm.

oh and despite your warning still looking for my retaining clip

10th March 2015, 07:54	#52
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	Check the slip rings condition also as the last 3 we've attempted to repair on CDT's (all around 100k miles) have all been worn down through the copper to the cream coloured plastic underneath, so brush replacement would have been futile without also replacing the rings. This is an off the car job for sure. __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block

5th October 2015, 13:28	#54
octopush Avid contributor MG ZT-T Join Date: Mar 2013 Location: portsmouth Posts: 210 Thanks: 54 Thanked 24 Times in 18 Posts	Big thanks for the How To. If i had to do it again it would only take about an hour not half a day. Total cost 50p for brushes. Found a great place for brushes and regulators they also test and fix alternators. Power Components Tel: 01243 378460 Emsworth, Hampshire __________________ [SIGPIC][/SIGPIC] My 2004 MG ZT T 2.0 CDTi 135+ Auto http://octopush.awardspace.com/index.htm www.gbuwh.co.uk/

7th October 2015, 23:10	#57
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	Just a word of warning on re brushing these chaps. Had quite a few now where the slip rings have deep grooves in them (especially if mileage over 100k) Grooves can be so deep that the cream coloured plastic shaft underneath the rings shows through ! In such cases it is futile to just replace the brushes as the voltage o/p will be unstable. Even voltage regulator damage could occur from the spiked input from the defective slip rings. Ideally for longevity the rings and brushes should be changed simultaneously. That obviously cannot be done in situ but I thought it worth pointing out. I would suspect some re brushing attemps have not restored the expected 14.2 - 14.5 volts. Another cause maybe the regulator pack itself or indeed the diode pack __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block

24th April 2016, 11:58	#58
Seanalf Gets stuck in Rover 75 CDTi Connie Join Date: Apr 2013 Location: Llanhilleth Posts: 584 Thanks: 193 Thanked 126 Times in 81 Posts	Just a quick footnote to this excellent guide... If you have the 2 pin type alternator, the cover is held by 2x7mm bolts only, one at the 7 o'clock position, the other at the 1 o'clock. The brushes are held by only 3 7mm headed bolts as well so no annoying wax to remove. The single bolt on the inner part of the brushes is a bit awkward to get to, but reachable with extensions. Only 25mins to remove. Certainly easier than the last one I did! __________________ This is my Rover, there are many like it, but this one is mine Born; Wednesday, 3rd October 2001 @ 16:00:16 The 34,336th 75 to run off the production line of 112,381 This was the 4,730th 75 CDT Connoisseur to be made out of 10,898 This was the 2,647th 75 in White Gold Metallic (code: GMN) to be made out of 12,251 White Gold Metallic 75s To do MK2 dials with IPK, FBH repair, headlining repair (again!) and some cosmetics.

20th January 2017, 13:15	#60
nealeam Newbie MG ZT Join Date: May 2012 Location: Stirling Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	Thanks a Million Just removed my regulator from 2005 CDTI ZT Alternator in situ. Your post was invaluable.Hope it's only the regulator. I've ordered up a new regulator and a second hand alternator just in case but can sell that on if need be. Just a note for later models with YLE000260 Alternator. only 2 bolts holding cover on and there 7mm. oh and despite your warning still looking for my retaining clip

5th October 2015, 14:46	#56
Shawn Banned Connoisseur SE MK2 diesel auto Join Date: Apr 2015 Location: East Yorkshire Posts: 369 Thanks: 50 Thanked 30 Times in 25 Posts	Nice how to Got a tip for making brush assembly easier,I tie them back with nylon thread,then when they are in place I snip it through to release them and pull the thread out