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Part number for voltage regulator on Alternator?
Topic Started: Aug 17 2011, 06:00 PM (2,699 Views)
Spooky_b329
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My alternator voltage drops whilst driving, after an hour or so the voltage creeps down to around 13.4 volts which means my split charge system cuts out, when the van is first started its around 14v.

I've heard I can try replacing the voltage regulator/electrical gubbins on the back of the alternator, apparently its just two screws and costs £10-12?

My van is a 54reg with the later 2.3 engine, my van is bog standard so I guess it'll have the smaller 120a alternator.

thanks :)
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Bazil-S
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Hi,

I need the last seven digits of the vin.
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Spooky_b329
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Thanks Bazil...just in time as well as today the voltage had dropped further to 13.16 volts, 13.3 when I turned off the headlights.

Last seven digits are D263497.

It would be great if you can tell me what size alternator I have, I assume its the standard 120a.
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Bazil-S
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Hi,

Over the years IVECO, change the code parts, more improvements occur, or is change the parts supplier.
The first code is the oldest.
Alternator standard (the type is not specified).
part no. 504009977 (Replaced by next part no.)
part no. 504385133
Alternator 140A (optional)
part no. 504009978 (R.)
part no. 504385134
Voltage regulator
part no. 42533813 (R.)
part no. 42534878 (R.)
part no. 42553814
Rectifier bridge
part no. 42557731(R.)
part no. 42559489
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Spooky_b329
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Bazil-S
Aug 20 2011, 10:21 PM
Alternator standard (the type is not specified).
part no. 504009977 (Replaced by next part no.) £89.40, complete alternator, or do I need to add the voltage regulator? Presumably 120a
part no. 504385133 Price on application
Alternator 140A (optional)
part no. 504009978 (R.) £323.03, for that price it must be the complete alternator? 140a.
part no. 504385134 Price on application
Voltage regulator
part no. 42533813 (R.) Redirects to part number 42559751, (voltage regulator) £161.47
part no. 42534878 (R.) As above
part no. 42553814 As above
Rectifier bridge
part no. 42557731(R.) Replaced by below.
part no. 42559489 Price on application
Thanks Bazil...confused now though!

If I stick my registration into Vexi, it gives me the optional 140a alternator as the replacement at £323.03. Think I need to email them!
Edited by Spooky_b329, Aug 21 2011, 10:47 AM.
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Bazil-S
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Hi,

For the alternator, you should inquire at vexi.co.
Try to see (with a mirror) if your alternator has a label with part no.
The voltage regulator and the diode bridge are in the event that you repair the alternator . Although it is not profitable.
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Bazil-S
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P.S.

At Daily after 2006 ( 2.3 & 3 L engine), the alternator pulley has a kind of clutch, are cases where the pulley was faulty (slipping).
It may be possible to be mounted even on the third generation of Daily, that kind of pulley, I do not remember.
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Spooky_b329
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Just taken a snap, part number 504009977.

As you say, not economical to repair at the prices for the voltage regulator. Dismayed at the difference between the standard and 140a alternator, really would like the uprated version as my alternator charges 280ahr of batteries. Found a 150a on ebay which should fit, seller has an excellent record so have stumped up £165 for it.

Posted Image
35s12 alternator by Ollie and Sally, on Flickr

Thanks for all the help Bazil
Edited by Spooky_b329, Aug 23 2011, 05:39 PM.
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