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 ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 09-10-2000, 02:35 AM
Mike Murrell's Avatar
Registered User
 
Join Date: Feb 2000
Posts: 2,351
Automotive text books claim that a 6 cell automotive battery produces 2.1 volts when healthy. 2.1 x 6 = 12.6 volts - the sign of a charged and healthy battery.

My '91 300-SEL has a yr. old AC-Delco battery designed for this car. After sitting overnight, a multimeter indicates a reading of 12.3 to 12.4 volts. After driving the car 'til good and warm, it reads 13.25-13.30 volts at idle. I see the same reading if I rev and hold the engine speed at 1500 rpm.

I've read elsewhere that I should be seeing 13.4 - 13.9 volts at idle. Are the readings I'm seeing an indication that the brushes are growing tired? Thanks for your time.

Mike Murrell
Reply With Quote
  #2  
Old 09-10-2000, 02:41 AM
MBZ.Ian
Guest
 
Posts: n/a
Need to check charging system via amps using a load rather than volt meter. The best results I have experienced is using MB batteries only. Aftermarket will often give problems, especially corrosion and obscure voltage readings.


------------------
Mercedes-Benz Master Guild - 2 years
Shop Foreman - 20 + years - dealer.
Part owner - MBZ Transmission remanufacture
2000 SL500
1995 E320
1989 300SE
Reply With Quote
  #3  
Old 09-10-2000, 02:43 AM
MBZ.Ian
Guest
 
Posts: n/a
Forgot one thing, take the 2 screws out of the regulator and look at the brushes. easiest way of telling wear.


------------------
Mercedes-Benz Master Guild - 2 years
Shop Foreman - 20 + years - dealer.
Part owner - MBZ Transmission remanufacture
2000 SL500
1995 E320
1989 300SE
Reply With Quote
  #4  
Old 09-10-2000, 02:49 AM
Mike Murrell's Avatar
Registered User
 
Join Date: Feb 2000
Posts: 2,351
MBZ.Ian - thanks for your help - Mike Murrell
Reply With Quote
  #5  
Old 09-11-2000, 12:01 AM
Wm. Lewallen
Guest
 
Posts: n/a
Mercedes-Benz does not make automobile batteries. Save your money and get an Interstate battery, or even a Sears battery(and Sears does not make batteries either)
There are a lot of parts other than batteries that Mercedes uses on their cars that they do not make:
Brakes and brake parts(most are ATE)
Diesel injection pumps and diesel turbos(I have two MB turbos and both have turbos made by Garrett located here in the USA. I just rebuilt the turbo (a Garrett)on my 1982 300D-Turbo.I got the parts from a place in Tx. Cost including shipping:$22.00. There really isn't much to a turbo. Bill Lewallen Lex.Ky.

Reply With Quote
  #6  
Old 09-11-2000, 01:24 AM
MBZ.Ian
Guest
 
Posts: n/a
Just a quick note on the last post, no MB does not actually make the batteries, they are made by other company's to Mercedes-Benz specifications. Basically over the past 20 years in the dealership level I have seen what after market batteries can do to a wireing harness. Stick with MB, prices are very competative. They also have the correct vetilation for the tube to vent the gasses away from critical components and wireing. I have replaced many a harness caused by aftermarket batteries. Penny wise, pound foolish. stick with MB.


------------------
Mercedes-Benz Master Guild - 2 years
Shop Foreman - 20 + years - dealer.
Part owner - MBZ Transmission remanufacture
2000 SL500
1995 E320
1989 300SE
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
W123 blower motor brushes -- any interest? Maki Diesel Discussion 18 11-28-2011 06:34 PM
Time to write our congressman.... TN-W124 Diesel Off Topic Discussion - Politics and Religion 1 11-07-2003 10:47 PM
Is it time for stem seals in my 300E??? mike690003 Tech Help 8 10-26-2003 09:17 PM
Tore aux fan apart; brushes look fried... The Warden Diesel Discussion 6 06-17-2003 10:54 PM
My defroster light and seat heater will flash from time to time. Steve190E 2.3 Tech Help 1 12-29-2000 10:46 PM



All times are GMT -4. The time now is 08:14 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page