Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 12-06-2009, 04:22 PM
Registered User
 
Join Date: Sep 2005
Posts: 107
W123 85 Charging issues

Alternator does not seem to be charging the battery. The idiot light does not come on, however.
Car has ~ 240k. What is likelyhood alternator is bad?
Thanks
Cliff

__________________
1983 300d~250k Sold
1985 300d~185k
1999 Volvo V70 wagen 109k
2001 Dodge Ram 1500 78k
Reply With Quote
  #2  
Old 12-06-2009, 04:25 PM
toomany MBZ's Avatar
Registered User
 
Join Date: Nov 2006
Location: central Va
Posts: 7,820
Inspect the regulator anyway, usually a failed bearing is what kills an alternator, but you never know.
__________________
83 SD

84 CD
Reply With Quote
  #3  
Old 12-06-2009, 05:09 PM
Registered User
 
Join Date: Jan 2002
Posts: 18,355
Put a voltmeter on the battery with the engine running and see what kind of voltage you are getting and report back.
__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
Reply With Quote
  #4  
Old 12-06-2009, 05:40 PM
compress ignite's Avatar
Drone aspiring to Serfdom
 
Join Date: Feb 2004
Location: 32(degrees) North by 81(degrees) West
Posts: 5,554
You're Lucky

All of the wear parts for your alternator are available:

http://search.waiglobal.com/vehiclelookup/bomsearch.aspx?search=bom&part=0-120-489-918
Attached Thumbnails
W123 85 Charging issues-screenhunter_01-dec.-06-16.36.gif   W123 85 Charging issues-screenhunter_02-dec.-06-16.37.gif   W123 85 Charging issues-screenhunter_03-dec.-06-16.37.gif   W123 85 Charging issues-screenhunter_04-dec.-06-16.38.gif   W123 85 Charging issues-screenhunter_05-dec.-06-16.38.gif  

__________________
'84 300SD sold
124.128
Reply With Quote
  #5  
Old 12-06-2009, 05:57 PM
Banned
 
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by kerry View Post
Put a voltmeter on the battery with the engine running and see what kind of voltage you are getting and report back.
I would only add........engine running at 2000 rpm or above...........
Reply With Quote
  #6  
Old 12-06-2009, 06:28 PM
Registered User
 
Join Date: Sep 2005
Posts: 107
wife is watchig a richard gere chick flick. as soon as she is done i will check the V at 2K rpm
__________________
1983 300d~250k Sold
1985 300d~185k
1999 Volvo V70 wagen 109k
2001 Dodge Ram 1500 78k
Reply With Quote
  #7  
Old 12-06-2009, 06:40 PM
Registered User
 
Join Date: Sep 2005
Posts: 107
needed jump to start. battery has been on trickle since~ 3pm.
off: 11.65V
on: 11.65V
@2k: 11.65
__________________
1983 300d~250k Sold
1985 300d~185k
1999 Volvo V70 wagen 109k
2001 Dodge Ram 1500 78k
Reply With Quote
  #8  
Old 12-06-2009, 07:56 PM
Banned
 
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by hubmachine View Post
needed jump to start. battery has been on trickle since~ 3pm.
off: 11.65V
on: 11.65V
@2k: 11.65
Alternator is confirmed OR the idiot light is burned out. You might replace the bulb for the idiot light prior to working with the alternator.

If the problem is the alternator, you might consider removing and replacing the regulator...........could cure the problem without replacing the alternator.

Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 03:52 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page