Page 1 of 2 12 LastLast
Results 1 to 10 of 20

Thread: RRC Magnet Marelli Alternator rebuild

  1. 9th November 2009, 06:09 PM #1
    Lucus's Avatar
    Lucus
    Lucus is offline Master
    Join Date
    Mar 2007
    Location
    Perth WA
    Posts
    779
    Total Downloaded
    0

    Talking RRC Magnet Marelli Alternator rebuild

    The alternator in my RRC developed a nice whinning sound over the last few weeks (it sounded like a supercharger oh how i wish......)

    The alt was charging fine but i just wanted to catch it before it went pop

    I made a few phone calls and managed to source new bearings for $5.23 and $4.86 respectively and the reg/brush pack for just $66! non genuine but quite a good price none the less. I also splashed out and bought a small bearing puller for $32. So the rebuild should come in around $110.

    Im pretty pleased with that as i have heard some horror storied about the cost of replacment MM alternators. The com could do with a touch up i think it will be fine for another 100000k or so....

    I will post up some pic's and part #'s once i get home


    Luke
    Reply With Quote Reply With Quote
  2. 9th November 2009, 07:22 PM #2
    Rangier Rover Guest
    So long as the rear bearing hasn't shreaded the rear housing of the alternator yet you will be OK. Seems to be the death of most from what I've seen.
    Reply With Quote Reply With Quote
  3. 9th November 2009, 08:17 PM #3
    Lucus's Avatar
    Lucus
    Lucus is offline Master
    Join Date
    Mar 2007
    Location
    Perth WA
    Posts
    779
    Total Downloaded
    0
    The rear bearing was okay. It hasn't moved in the housing. The front was bone dry and had traces of dried up grease on the exterior of the alt. The alt's been painted black so i would be surprissed if this is its 2nd (or 3rd......)
    bodgy rebuild
    Reply With Quote Reply With Quote
  4. 9th November 2009, 08:38 PM #4
    harry's Avatar
    harry
    harry is offline ForumSage Subscriber
    Join Date
    Jan 1970
    Location
    Gold Coast Queensland Australia
    Posts
    6,469
    Total Downloaded
    0
    but if it is a magnetti marrelli 100 amp, serpentine belt driven, how good are the slip rings?
    better to replace it with a new 120 amp bosch jobbie for around $400.
    Safe Travels
    harry
    Reply With Quote Reply With Quote
  5. 9th November 2009, 08:50 PM #5
    Blknight.aus's Avatar
    Blknight.aus
    Blknight.aus is offline RoverLord Vendor
    Join Date
    Aug 2006
    Location
    Melbourn(ish)
    Posts
    26,501
    Total Downloaded
    0
    good drills, dont forget to give the slip rings a clean up with some brasso on cotton balls.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.
    Reply With Quote Reply With Quote
  6. 9th November 2009, 09:57 PM #6
    Bigbjorn
    Bigbjorn is offline Swaggie Gold Subscriber
    Join Date
    Jul 2006
    Location
    Brisbane, Inner East.
    Posts
    11,178
    Total Downloaded
    0
    Marelli are the wog equivalent of Lucas. Marelli is how bigga trouble is spelt in Italian.
    URSUSMAJOR
    Reply With Quote Reply With Quote
  7. 9th November 2009, 10:03 PM #7
    Lucus's Avatar
    Lucus
    Lucus is offline Master
    Join Date
    Mar 2007
    Location
    Perth WA
    Posts
    779
    Total Downloaded
    0
    Quote Originally Posted by harry View Post
    but if it is a magnetti marrelli 100 amp, serpentine belt driven, how good are the slip rings?
    better to replace it with a new 120 amp bosch jobbie for around $400.
    Slip rings as mentioned about are worn but servicable. They have polished up nicely.

    Why spend 4 times the repair price to replace a unit that apart from a noisy bearing is perfectly servicable??


    Luke
    Reply With Quote Reply With Quote
  8. 10th November 2009, 05:55 AM #8
    MacMan's Avatar
    MacMan
    MacMan is offline Wizard
    Join Date
    Jan 1970
    Location
    Forty minutes closer to the hills in a house the bank is kind enough to let me live in
    Posts
    1,532
    Total Downloaded
    0
    If the Rangie alternators are anything like the ones fitted to the Discos then I would throw it as far as possible to replace it with a Bosch which has respectable bearings and better parts availability for traveling.

    I was amazed at how STUPID the OEM ones are.
    Reply With Quote Reply With Quote
  9. 10th November 2009, 08:25 AM #9
    Lucus's Avatar
    Lucus
    Lucus is offline Master
    Join Date
    Mar 2007
    Location
    Perth WA
    Posts
    779
    Total Downloaded
    0
    Well to the best of my knowledge the last set of disrespectful bearings lasted 254000k's. If the next set last that they will out last the car.

    The alt is producing 13.5 volts at idle under 22amp of load. At full load (77amp) it still producing 12.7 volts. So i'm happy.
    Reply With Quote Reply With Quote
  10. 10th November 2009, 06:45 PM #10
    LOVEMYRANGIE's Avatar
    LOVEMYRANGIE
    LOVEMYRANGIE is offline YarnMaster
    Join Date
    Feb 2008
    Location
    Northern Windowlickersville WA
    Posts
    3,403
    Total Downloaded
    0
    Quote Originally Posted by Lucus View Post
    Well to the best of my knowledge the last set of disrespectful bearings lasted 254000k's. If the next set last that they will out last the car.

    The alt is producing 13.5 volts at idle under 22amp of load. At full load (77amp) it still producing 12.7 volts. So i'm happy.
    I agree. 258,000k's original fit in mine and it only **** the brushes and the rear mount leg was broken, and that had done 100,000k's like that.
    The only reason I replaced rather than repair is I have a lot higher power needs now and the OEM 85amp was running at full tilt constantly.

    Cheers

    Andrew
    Reply With Quote Reply With Quote
Page 1 of 2 12 LastLast
« HID xenon conversion of Headlights? | Battery light »

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules

Search AULRO.com ONLY!
 Search All the Web!