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Posted on May 24, 2011
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How to tension the BMW x5 4.4i 2003 serpentine belt

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Justin Fitzgerald

Justin Fitzgerald

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  • Posted on Jun 01, 2011
Justin Fitzgerald
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All BMWs use a spring loaded tensioner. if you are having trouble with the tension then you need to find /use the correct belt path. If you are having trouble getting the belt on the tensioner, then use a section of the old belt to tug the new belt onto the Alt. pulley.

The tensioner that is on the BMW 4.4L M104 motor is found near the idle pulley and can be locked into the slacked position with a 1/4" thick bolt that has the threads ground off also the tensioner can be operated with a 3/8 drive ratchet. Apply tension to this pulley after getting the belt wrapped around the other pulleys and then fit it over the Alt. pulley last.

2 Related Answers

Anonymous

  • 73 Answers
  • Posted on Apr 22, 2009

SOURCE: adjust serpentine belt tensioner 2003 hyundai

has automatic belt tensioner

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Anonymous

  • 56 Answers
  • Posted on Dec 08, 2009

SOURCE: How to release tension to slip new belt on 2003

There should be a belt tensioner which requires a socket and a ratchet to pull tension off the belt by prying on this tensioner in the opposite direction.. Good Luck

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2003 325i. How can I install a serpentine belt?
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Serpentine belt diagram for a 2003 Chevy unpalatable 4.3
Pop the hood of the car and locate the serpentine belt routing diagram. The diagram on the 2003 Chevrolet Impala is on top of the fan shroud. The diagram will be a picture of all of the accessory pulleys and how the serpentine belt is routed among the pulleys. This diagram will give you the exact direction for routing the new belt onto the pulleys. If you cannot find a serpentine belt routing diagram, take a notepad and pen and draw out the exact routing diagram of the old belt across the pulleys.

  • 2 Locate the serpentine belt tensioner. It is located below the alternator on the left front side of the engine. The tensioner on the 3.4 liter, 3.5 liter and the 3.9 liter engines will require a 3/8 ratchet to release the belt tensioner. The 3.8 liter engine will require a ratchet and a 15 mm socket for the belt tensioner. Rotate the belt tensioner clockwise to loosen and remove the belt from the belt tensioner pulley.
  • 3 Slide the old belt from the belt tensioner pulley. Remove the belt from the remaining pulleys and pull the belt from the engine compartment.
  • 4 Route the new belt across the crankshaft pulley first. The crankshaft pulley is the big pulley on the bottom of the engine in the center. Then route the serpentine belt across the remaining pulleys as directed by the serpentine belt routing diagram. Leave the belt tensioner pulley for last.
  • 5 Rotate the belt tensioner clockwise again to relieve the tension and slide the new belt across the top of the belt tensioner pulley. Release the belt tensioner and the belt will tighten up as the tensioner applies pressure to the belt. Make sure the new belt is properly seated in all the pulleys.
  • 6 Crank the engine and inspect the belt again to make sure that it stays seated in the pulleys.

    • Read more: How to Replace a Serpentine Belt on a 2003 Chevrolet Impala ' eHow.co.uk http://www.ehow.co.uk/how_6120665_replace-belt-2003-chevrolet-impala.html#ixzz1Yi6QLAjb
    Read full answer
    Sep 21, 2011 • 2003 Chevrolet Impala
    2helpful
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    I cant figure this out. I have a 1995 BMW 325i. I am trying to take off the fan/serpentine belt. How would i do that?
    cansmo_7.jpgcansmo_163.gifTurn slowly clockwise you will need to compress the tensioner when you have enough slack remove belt , To install do the order in reverse
    Read full answer
    Aug 29, 2011 • 2003 BMW 325
    0helpful
    1answer

    Having problems putting serpentine belt back on a 2003 525 2.5 liter bmw
    Pop the dust cap off the tensioner pulley and grab it by the bolt inside the pulley. Then you can twist it against the spring tension to make slack.
    Because the tensioner moves so far when there is no belt on it, some folks find it easier to slip the new belt over the top of the old belt, so you need to move the tensioner only a quarter inch or so to slip the new belt in between the old belt and the tensioner. Then, when the new belt is in place, you cut the old belt out. I have never tried it because I am usually replacing at least one tensioner bearing when I replace belts, but it sounds like it might work well.
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    Jul 30, 2011 • BMW 525 Cars & Trucks
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    1answer

    How do i adjust the tension belt on the alternator
    You don't adjust the tension. The tensioner on that serpentine belt is spring loaded and never needs adjustment.
    On a 2001 with normal miles (~125k), you should be on your second tensioner pulley and your third serpentine belt by now.
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    May 11, 2011 • 2001 BMW 330
    1helpful
    2answers

    Need diagram for serpentine belt for chevy imo l s 2003
    Click on the following free direct Link. It has the Serpentine Belt Diagram and Tensioner location for your 2003 Chevy Impala.

    http://www.2carpros.com/car_repair_information/year/2003/make/chevrolet/model/impala/2003_chevrolet_impala_drive_belt_routing_diagram.htm

    GENERAL/Standard Rules to Removal the Serpentine Belt with a Tensioner:
    A. Find the Tensioner(s). (See Diagrams on Link)
    B. Using a Serpentine Belt Tensioner Tool, Or Wrench OR Ratchet, Rotate/Move the Tensioner USING THE AVAILABLE NUT (on the Pulley or Arm Base) OR the OPENING (3/8ths or 1/2 inch square opening) rotating the Tensioner Pulley/Arm - moving it away from contact with the belt and towards the area where the belt is not in contact with the Tensioner Pulley. The Tensioner is spring loaded, and is hard to rotate/move.
    C. Remove the loosened belt off one of the other more easily accessed Pulleys.
    D. DO NOT quickly release the Tensioner, but gently allow the Tensioner to rest in its closed position.

    Standard Rules for Installing the Serpentine Belt with Tensioners:
    a. Pick a Pulley that is most easily accessed. This will usually be on top. This will be the last Pulley that the belt will go on.
    b. Using the Diagram: Install the new Serpentine Belt on the remainder of the Pulleys....over, under, left right.
    c. Using a Serpentine Belt Tensioner Tool or Wrench or Ratchet Tool: Rotate/Move the Tensioner Pulley/Arm "away" from Belt contact area on the Tensioner. This spring is pretty hard and with a new belt, it will be even harder to install. Rotate/Move this to as-close to the maximum allowed inorder to have enough slack in the belt to get it up and over the last pulley.
    d. Using your other hand - Pull the Belt up and over the Last remaining Pulley.
    e. Before releasing the pressure on the Tensioner, visually inspect the remainder Pulleys and the Belts' Positioning on them.

    Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.Com!
    Read full answer
    Mar 30, 2010 • 2003 Chevrolet Impala
    0helpful
    1answer

    Serpentine belt position
    Click on the following free direct Link. It has the Serpentine Belt Diagram and Tensioner location for your 2003 Chevy Impala.

    GENERAL/Standard Rules to Removal the Serpentine Belt with a Tensioner:
    A. Find the Tensioner(s). (See Diagrams on Link)
    B. Using a Serpentine Belt Tensioner Tool, Or Wrench OR Ratchet, Rotate/Move the Tensioner USING THE AVAILABLE NUT (on the Pulley or Arm Base) OR the OPENING (3/8ths or 1/2 inch square opening) rotating the Tensioner Pulley/Arm - moving it away from contact with the belt and towards the area where the belt is not in contact with the Tensioner Pulley. The Tensioner is spring loaded, and is hard to rotate/move.
    C. Remove the loosened belt off one of the other more easily accessed Pulleys.
    D. DO NOT quickly release the Tensioner, but gently allow the Tensioner to rest in its closed position.

    Standard Rules for Installing the Serpentine Belt with Tensioners:
    a. Pick a Pulley that is most easily accessed. This will usually be on top. This will be the last Pulley that the belt will go on.
    b. Using the Diagram: Install the new Serpentine Belt on the remainder of the Pulleys....over, under, left right.
    c. Using a Serpentine Belt Tensioner Tool or Wrench or Ratchet Tool: Rotate/Move the Tensioner Pulley/Arm "away" from Belt contact area on the Tensioner. This spring is pretty hard and with a new belt, it will be even harder to install. Rotate/Move this to as-close to the maximum allowed inorder to have enough slack in the belt to get it up and over the last pulley.
    d. Using your other hand - Pull the Belt up and over the Last remaining Pulley.
    e. Before releasing the pressure on the Tensioner, visually inspect the remainder Pulleys and the Belts' Positioning on them.

    Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.Com!
    Read full answer
    Mar 30, 2010 • 2003 Chevrolet Impala
    0helpful
    1answer

    How do you remove the drive belt of a 2003 Toyota
    Click on the following free direct Link. It has the correct Serpentine/Drive Belt Diagrams for your 2003 Toyota Camry with either the 2.4L 4-Cylinder or 3.0L V6 Engine.

    http://www.2carpros.com/car_repair_information/year/2003/make/toyota/model/camry/2003_toyota_camry_drive_belt_routing_diagram.htm

    "HOW TO":
    Standard Rules to Removal the Serpentine Belt with an Automatic Tensioner:
    1. Find the Tensioner(s). (See Diagrams on Link)
    2. Using a Serpentine Belt Tensioner Tool, Or Wrench OR Ratchet, Rotate/Move the Tensioner USING THE AVAILABLE NUT (on the Pulley or Arm Base) OR the OPENING (3/8ths or 1/2 inch square opening) rotating the Tensioner Pulley/Arm - moving it away from contact with the belt and towards the area where the belt is not in contact with the Tensioner Pulley. The Tensioner is spring loaded, and is hard to rotate/move.
    3. Remove the loosened belt off one of the other more easily accessed Pulleys.
    4. DO NOT quickly release the Tensioner, but gently allow the Tensioner to rest in its closed position.

    Standard Rules for Installing the Serpentine Belt with an Automatic Tensioner:
    a. Pick a Pulley that is most easily accessed. This will usually be on top. This will be the last Pulley that the belt will go on.
    b. Using the Diagram: Install the new Serpentine Belt on the remainder of the Pulleys....over, under, left right.
    c. Using a Serpentine Belt Tensioner Tool or Wrench or Ratchet Tool: Rotate/Move the Tensioner Pulley/Arm "away" from Belt contact area on the Tensioner. This spring is pretty hard and with a new belt, it will be even harder to install. Rotate/Move this to as-close to the maximum allowed inorder to have enough slack in the belt to get it up and over the last pulley.
    d. Using your other hand - Pull the Belt up and over the Last remaining Pulley.
    e. Before releasing the pressure on the Tensioner, visually inspect the remainder Pulleys and the Belts' Positioning on them.
    Let me know if this helped, or if you have additional information questions. Feel Free to contact me at FixYa.com!
    Read full answer
    Dec 29, 2009 • 2003 Toyota Camry
    0helpful
    1answer

    Can you tell me how to remove the serpentine belt on a 2002 bmw 325i?
    Make sure you take note of how it is installed, as it can sometimes be difficult to work out where it should go.

    You need to release the pressure on the belt, by adjusting the tensioner.

    You should find a diagram somewhere in the engine bay, that shows how the belt is routed. The tensioner is normally indicated on this diagram.

    I think on your car, the tensioner pulley has a hex bolt on it, which can be loosened, to move the pulley. The tensioner pulley applies pressure to the outside (smooth) side of the belt.
    Read full answer
    Apr 21, 2009 • 2003 BMW 325
    0helpful
    1answer

    Adjust serpentine belt tensioner 2003 hyundai
    has automatic belt tensioner
    Read full answer
    Apr 05, 2009 • 2003 Hyundai Santa Fe
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