Alternator Caput? Car came to a HALT!!!

Discussion in 'Engine' started by MERC'ED!, Jul 13, 2010.

  1. MERC'ED!

    MERC'ED! Hardcore MB Enthusiast

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    Hi I have a diesel 220 cdi w203...

    & basically heard some sort of squelching yesturday whilst driving around, Upon having a closer look, the next Day (in the light) I see the belts still ok, BUT the alternator pulley possibly had seized..

    The car stalled at a junction & would not start???

    Managed to get the car out of the road, & later fiddled with the pulley shaft, & the engine cranked over, (& now starts), BUT sounds like a bunch of bearings gone, Tested alternator with multimeter & its still working...

    What do you recon before I take it off?

    Clutch on the Pulley?
    Alternator shaft & bushes?
    OR basic bearings shot?

    Is there a FIX? OR just Rapid replacement?

    cheers...
     
    Last edited: Jul 13, 2010
  2. AndyPCD

    AndyPCD Registered User

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    If i remember correctly you can get the alternator pulley on its own.

    It would be worth whipping the belt off and just testing all the pulleys by hand to check to see which one is worn.

    I dont think that if the alternator pulley had seized it would of caused the car to cut out it would have more than likely just shredded the belt.
     
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  3. OP
    OP
    MERC'ED!

    MERC'ED! Hardcore MB Enthusiast

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    There was evidence of the belt being shredded, I saw small Fresh fragments around the alt pulley, Noise is very evident now...

    Possibly bearings in Clutch pulley? Or main shaft bearings?

    As it never cause no funny lights on the dash, Because the alt is still working, & charging the battery...

    Shall Whip it off sooner then later..

    BUT thought I would get advice, Any idea on where to buy the spares if repairable?
     
  4. kwakdonut

    kwakdonut Hardcore MB Enthusiast

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    I believe new Alternators are hideously expensive but you should be able to get it into somewhere that refurb's them for much less.
     
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  5. OP
    OP
    MERC'ED!

    MERC'ED! Hardcore MB Enthusiast

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    Had the alternator out yesturday...

    Pulley looks ok, BUT bearings sound SHOT in the alternator itself...

    Euro car parts? German swedish?

    OR shall I look for a rebuilder?
     
  6. AndyPCD

    AndyPCD Registered User

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    I do know of a place in borehamwood that are very good. I use them all the time and they are quite cheap.

    They are called unit exchange
     
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  7. grober

    grober MB Club Veteran

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  8. OP
    OP
    MERC'ED!

    MERC'ED! Hardcore MB Enthusiast

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  9. OP
    OP
    MERC'ED!

    MERC'ED! Hardcore MB Enthusiast

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    gonna get a quote from them Now, After googling them up..
     
  10. OP
    OP
    MERC'ED!

    MERC'ED! Hardcore MB Enthusiast

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    My actual alternator is a DELPHI (With merc logo & part number...)

    A0001501750 (14v & 190amps)

    Do you recon its he same as an ML?

    Looking for a used Replacmant to get my car OTR ASAP!!!
     
  11. OP
    OP
    MERC'ED!

    MERC'ED! Hardcore MB Enthusiast

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    The replacement part number is: MERCEDES A0001502550 DELPHI ALTERNATOR

    & according to this ebay advert & picture mines exactly the same (

    & the advert states it fits the following mercedes models:


    MERCEDES-BENZ C-CLASS (W203) C200 CDI 2000 -> 2003
    MERCEDES-BENZ C-CLASS (W203) C220 CDI 2000 -> 2003
    MERCEDES-BENZ C-CLASS (W203) C270 CDI 2000 -> 2003
    MERCEDES-BENZ CLK (C209) CLK270 CDI 2002 -> 2003
    MERCEDES-BENZ E-CLASS (W210) E200 CDI 1999 -> 2002
    MERCEDES-BENZ E-CLASS (W210) E220 CDI 1999 -> 2003
    MERCEDES-BENZ E-CLASS (W210) E270 CDI 1999 -> 2002
    MERCEDES-BENZ E-CLASS (W210) E320 CDI 1999 -> 2003
    MERCEDES-BENZ G-CLASS (W463) G270 CDI 2001 -> 2004
    MERCEDES-BENZ M-CLASS (W163) ML270 CDI 1999 -> 2005
    MERCEDES-BENZ S-CLASS (W220) S320 CDI 1999 -> 2002
    MERCEDES-BENZ S-CLASS (W220) S400 CDI 1999 -> 2002

    Can anyone with any Knowledge confirm?
     
  12. OP
    OP
    MERC'ED!

    MERC'ED! Hardcore MB Enthusiast

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    I have just cleaned up the old alternator & checked it out properly...

    The Pulley has definantly seized onto the shaft (only turns the whole armature not itself), there is no freewheeling / one way bearing effect... clockwise or anti clockwise..

    BUT there is no PLAY in it whatsoever, SO would you recon it needs the internal Bearings?

    It has just got me thinking = "Its just the Pulley... that i need to replace..."

    gsf want £90
    Euro car parts around the same...
    Have not tried mercedes..

    Would like a secondary opinion...

    Cheers..
     
  13. Ted

    Ted MB Club Veteran

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    I would expect the alternator to have two bearings. A ball race at the front (drive end) and a needle roller at the rear (slip ring end).
    Check for play at the drive end by moving the drive end spindle 'up and down' There should be none.
    Chck for play at the slip ring end by attempting to move the rotor laterally - not forwards or backwards, but 'up and down' from the drive end (hard to explain in words - hope you understand)
    Also spin the rotor. Any sign of roughness means the bearings are shot.
    If one is gone, both will need replacing.

    I don't know how they are on a modern alternator, but it was always poossible to drift out/vice press in the bearings on older alternators. They were standard bearings (e.g. 6202) and could be purchased from any bearing supplier.

    P.S. it is nearly always an overtight drive belt that causes the alternator bearings to wear out. If they ARE shot, it might be worth checking all other bearings driven by that belt.
     
    Last edited: Jul 15, 2010
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  14. ss201

    ss201 Hardcore MB Enthusiast

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    You need to check with your dealer to get the correct part # for your car, as there are many and varied fittings - as I found out to my cost! I ordered one from GSF for my W201 2.6 - A genuine Bosch part was supplied by GSF, on an exchange basis for the old alternator. Took the new part to my M-B specialist to fit, only to discover there are TWO alternators for this model - needless to say I'd bought the wrong one! Turned out just the regulator needed replacing on my old one, so GSF refunded the cost - but a bucketload of running around and wasted time.

    Along the way, I picked up a brand new 90amp Mercedes/Bosch alternator - which also doesn't fit, and I still have. If it fits your car and will serve your purpose let me know. Details are:

    Bosch part# 0123 335 008
    M-B part # 009 154 2902

    When I enquired at the dealership, the parts manager said it fitted various C-Class, E-class cars and some Sprinter vans. M-B price was well in excess of £300!

    Holler if you need it. Will sell for £85 posted.

    regards

    Steve
     
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  15. OP
    OP
    MERC'ED!

    MERC'ED! Hardcore MB Enthusiast

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    These are the cross reference numbers for My specific alternator...

    (Although mines a Delphi)

    CARGO NEW 113772
    DELCO REMY EXC DRA4035
    HELLA REF CA1838
    LUCAS ELSTOCK LRA02162
    LUCAS EXC LRA2162
    WOODS ALT42601
    DELPHI 10480404
    DELPHI 10480408
    MERCEDES BENZ 00011502450
    MERCEDES BENZ 0001501750
    MERCEDES BENZ 0001502550
    MERCEDES BENZ A0001501750
    MERCEDES BENZ A0001502550

    I have handed mine into Mitre Electrics - Specialists in Alternators, Starter Motors, Dynamos, Batteries - Tooting, SW17 who are quite local to me..

    They have asked me to wait until monday, Lets see what happens...

    (I could visually see the back of the pulley had started to brake away & dig into the alternator housing, causing slithers of mettle to shredd..)

    The best thing I can do right now is Find a replacement!

    Anyone? Let me know..
     
    Last edited: Jul 16, 2010
  16. OP
    OP
    MERC'ED!

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    So I heard back from the repairers today..

    They said they would Repair it for £100, BUT would not gaurantee the work!

    The Bearing on the front of the alternator has seized, Along with the Clutch / free wheeling pulley.. (Both still turn by hand Just noisy)

    & What I have also Noticed is that THEY have managed to break away some of the neck of the Alternator faceplate, where the front Bearing was seated... Prior to its removal by them, I am sure, Because all the Broken pieces are Quite fresh, With NO dirt gathered upon them whatsoever...

    I managed to take it back, Without them Putting it back together...

    I am in the process of finding out the bearing size as it was not printed fully? just a number like A1 - x28 , So I can order it Along with the Washing machine bearings I am replacing at the same time... LMFAO!!! Look at my luck....

    What I would really like to know is that:

    is there another way, Without me having to install a Clutch / free wheeling pulley?

    What is the MOD?

    & what has the effect long & short term, Disadvantage, advantage (apart from it making a squeak everytime I turn the engine off, As the alternator comes to a stop)

    Cheers in abit...
     
  17. OP
    OP
    MERC'ED!

    MERC'ED! Hardcore MB Enthusiast

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    Bearing size for alternator is 17x52x17... BUT its kind of Pressed & machine moulded into place into the Faceplate of the alternator...

    Would be easy to replace the front cover of the alternator with a bearing fitted...

    the bearing is the same size in bosch alternators too, From what I have found out...
     
  18. cyberflex

    cyberflex Hardcore MB Enthusiast

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  19. OP
    OP
    MERC'ED!

    MERC'ED! Hardcore MB Enthusiast

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    YES I read that thread...

    MINE is the free wheeling pulley, & the front bearing of the alternator (that fitts on the shaft itself..) these are the parts that I am in the process of fixing...
     
  20. OP
    OP
    MERC'ED!

    MERC'ED! Hardcore MB Enthusiast

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    Its BACK, the free wheeling pulley I bought from GSF was started making weird noises & its done my alternator in again...

    ANYONE GOT AN ALTERNATOR????
     

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