Tip & How-To about 2004 Ford F150

How to replace your serpentine belt

First off, if you don't have a belt routing diagram and aren't sure how it's routed you should make a note/diagram so you won't be confused when it's time to install your new belt. To remove tension from your belt you'll need to rotate your tensioner counter clockwise. They normally have either a place to use a wrench towards the top or a spot where you can add a ratchet to move it (generally between 16-18mm, and a 3/8 input for your ratchet). Once the tensioner has been moved and belt is loose remove it. Slide your new belt into position (with tensioner not yet moved you'll be unable to go over one pulley) move your belt tensioner and fit your belt in place. Make sure the grooves of belt are properly seated in pulleys and under tensioner roller. Start your vehicle and inspect your belt while running.

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I need to know how to remove an A/C compressor pulley on a 2000 Mazda B3000, in order to route a new surpentine belt.


3.0L And 4.0L Engines
  1. Disconnect the negative battery cable.
  2. With the vehicle in neutral, position it on a hoist.
  3. Remove the splash shield.
  4. Rotate the accessory drive belt tensioner clockwise for 2001-2004 models and counterclockwise for 2005-2006 models. Remove the belt.
  5. To install, reverse the removal procedure.

Serpentine Belt
All Navajo and B Series Pick-up engines utilize one wide-ribbed V-belt to drive the engine accessories such as the water pump, alternator, air conditioner compressor, air pump, etc. Because this belt uses a spring loaded tensioner for adjustment, belt replacement tends to be somewhat easier than on engines where accessories are pivoted and bolted in place for tension adjustment, such as the MPV. Basically, all belt replacement involves is to pivot the tensioner to loosen the belt, then slide the belt off of the pulleys. The two most important points are to pay CLOSE attention to the proper belt routing (since serpentine belts tend to be "snaked" all different ways through the pulleys) and to make sure the V-ribs are properly seated in all the pulleys.

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Fig. Belt routing diagram-3.0L engines




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Fig. Belt routing diagram-4.0L engines


Although belt routing diagrams have been included in this section, the first places you should check for proper belt routing are the labels in your engine compartment. These should include a belt routing diagram which may reflect changes made during a production run.
  1. Disconnect the negative battery cable for safety. This will help assure that no one mistakenly cranks the engine over with your hands between the pulleys.
Take a good look at the installed belt and make a note of the routing. Before removing the belt, make sure the routing matches that of the belt routing diagrams. If for some reason a diagram does not match (you may not have the original engine or it may have been modified,) carefully note the changes on a piece of paper.
  1. For tensioners equipped with a 1 / 2 inch square hole, insert the drive end of a large breaker bar into the hole. Use the breaker bar to pivot the tensioner away from the drive belt. For tensioners not equipped with this hole, use the proper-sized socket and breaker bar (or a large handled wrench) on the tensioner idler pulley center bolt to pivot the tensioner away from the belt. This will loosen the belt sufficiently that it can be pulled off of one or more of the pulleys. It is usually easiest to carefully pull the belt out from underneath the tensioner pulley itself.

  1. Once the belt is off one of the pulleys, gently pivot the tensioner back into position. DO NOT allow the tensioner to snap back, as this could damage the tensioners internal parts.
  2. Now finish removing the belt from the other pulleys and remove it from the engine.
To install:
  1. While referring to the proper routing diagram (which you identified earlier), begin to route the belt over the pulleys, leaving whichever pulley you first released it from for last.
  2. Once the belt is mostly in place, carefully pivot the tensioner and position the belt over the final pulley. As you begin to allow the tensioner back into contact with the belt, run your hand around the pulleys and make sure the belt is properly seated in the ribs. If not, release the tension and seat the belt.
  3. Once the belt is installed, take another look at all the pulleys to double check your installation.
  4. Connect the negative battery cable, then start and run the engine to check belt operation.
  5. Once the engine has reached normal operating temperature, turn the ignition OFF and check that the belt tensioner arrow is within the proper adjustment range.

Hope helps (remember rated and comment this).

Sep 07, 2010 | Mazda B3000 Cars & Trucks

1 Answer

I need an Idler pulley or the pulley that runs air conditioner belt as well as the belt for the power steering


OK.
If your idler pulley is bad then unbolt it and while you're at it replace the power steering belt.

REMOVAL & INSTALLATION Because serpentine belts use a spring loaded tensioner for adjustment, belt replacement tends to be somewhat easier than it used to be on engines where accessories were pivoted and bolted in place for tension adjustment. Basically, all belt replacement involves is to pivot the tensioner to loosen the belt, then slide the belt off of the pulleys. The two most important points are to pay CLOSE attention to the proper belt routing (since serpentine belts tend to be "snaked'' all different ways through the pulleys) and to make sure the V-ribs are properly seated in all the pulleys. Although belt routing diagrams have been included in this section, the first places you should check for proper belt routing are the labels in your engine compartment. These should include a belt routing diagram which may reflect changes made during a production run.
  1. Disconnect the negative battery cable for safety. This will help assure that no one mistakenly cranks the engine over with your hands between the pulleys, and that the cooling fan cannot activate while servicing the belt(s). NOTE: Take a good look at the installed belt and make a note of the routing. Before removing the belt, make sure the routing matches that of the belt routing label or one of the diagrams in this book. If for some reason a diagram does not match (you may not have the original engine or it may have been modified), carefully note the changes on a piece of paper.
  2. For tensioners equipped with a 1⁄2 in. (13mm) square hole, insert the drive end of a large breaker bar into the hole. Use the breaker bar to pivot the tensioner away from the drive belt. For tensioners not equipped with this hole, use the proper-sized socket and breaker bar (or a large handled wrench) on the tensioner idler pulley center bolt to pivot the tensioner away from the belt. This will loosen the belt sufficiently that it can be pulled off of one or more of the pulleys. It is usually easiest to carefully pull the belt out from underneath the tensioner pulley itself.
  3. Once the belt is off one of the pulleys, gently pivot the tensioner back into position. DO NOT allow the tensioner to snap back, as this could damage the tensioner's internal parts.
  4. Now finish removing the belt from the other pulleys and remove it from the engine. To install:
  5. While referring to the proper routing diagram (which you identified earlier), begin to route the belt over the pulleys, leaving whichever pulley you first released it from for last.
  6. Once the belt is mostly in place, carefully pivot the tensioner and position the belt over the final pulley. As you begin to allow the tensioner back into contact with the belt, run your hand around the pulleys and make sure the belt is properly seated in the ribs. If not, release the tension and seat the belt.
  7. Once the belt is installed, take another look at all the pulleys to double check your installation.
  8. Connect the negative battery cable, then start and run the engine to check belt operation.
  9. Once the engine has reached normal operating temperature, turn the ignition OFF and check that the belt tensioner arrow is within the proper adjustment range. Fig. 1: Often the underhood label will display the serpentine drive belt routing 88231p43.gif
    Fig. 2: Relieve the belt tension by pivoting the automatic tensioner away from the belt, then remove the belt 88231p44.gif
    Fig. 3: Verifying serpentine belt alignment in the pulley 79244g60.gif
    Fig. 4: Fig. 1 Accessory V-belt routing — Tracker 1.6L engine with A/C 93024g03.gif
    Fig. 5: Fig. 2 Accessory V-belt routing — Tracker 1.6L engine with A/C and P/S 93024g04.gif
    Fig. 6: Fig. 3 Accessory V-belt routing — Tracker 1.6L engine with P/S 93024g05.gif
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Jun 26, 2010 | 2000 Chevrolet Tracker

1 Answer

belt replacement diagram 2000 mazda mpv


REMOVAL & INSTALLATION Because serpentine belts use a spring loaded tensioner for adjustment, belt replacement tends to be somewhat easier than it used to be on engines where accessories were pivoted and bolted in place for tension adjustment. Basically, all belt replacement involves is to pivot the tensioner to loosen the belt, then slide the belt off of the pulleys. The two most important points are to pay CLOSE attention to the proper belt routing (since serpentine belts tend to be "snaked'' all different ways through the pulleys) and to make sure the V-ribs are properly seated in all the pulleys. Although belt routing diagrams have been included in this section, the first places you should check for proper belt routing are the labels in your engine compartment. These should include a belt routing diagram which may reflect changes made during a production run.
  1. Disconnect the negative battery cable for safety. This will help assure that no one mistakenly cranks the engine over with your hands between the pulleys, and that the cooling fan cannot activate while servicing the belt(s). NOTE: Take a good look at the installed belt and make a note of the routing. Before removing the belt, make sure the routing matches that of the belt routing label or one of the diagrams in this book. If for some reason a diagram does not match (you may not have the original engine or it may have been modified), carefully note the changes on a piece of paper.
  2. For tensioners equipped with a 1⁄2 in. (13mm) square hole, insert the drive end of a large breaker bar into the hole. Use the breaker bar to pivot the tensioner away from the drive belt. For tensioners not equipped with this hole, use the proper-sized socket and breaker bar (or a large handled wrench) on the tensioner idler pulley center bolt to pivot the tensioner away from the belt. This will loosen the belt sufficiently that it can be pulled off of one or more of the pulleys. It is usually easiest to carefully pull the belt out from underneath the tensioner pulley itself.
  3. Once the belt is off one of the pulleys, gently pivot the tensioner back into position. DO NOT allow the tensioner to snap back, as this could damage the tensioner's internal parts.
  4. Now finish removing the belt from the other pulleys and remove it from the engine. To install:
  5. While referring to the proper routing diagram (which you identified earlier), begin to route the belt over the pulleys, leaving whichever pulley you first released it from for last.
  6. Once the belt is mostly in place, carefully pivot the tensioner and position the belt over the final pulley. As you begin to allow the tensioner back into contact with the belt, run your hand around the pulleys and make sure the belt is properly seated in the ribs. If not, release the tension and seat the belt.
  7. Once the belt is installed, take another look at all the pulleys to double check your installation.
  8. Connect the negative battery cable, then start and run the engine to check belt operation.
  9. Once the engine has reached normal operating temperature, turn the ignition OFF and check that the belt tensioner arrow is within the proper adjustment range. Fig. 1: Often the underhood label will display the serpentine drive belt routing 88231p43.gif
    Fig. 2: Relieve the belt tension by pivoting the automatic tensioner away from the belt, then remove the belt 88231p44.gif
    Fig. 3: Verifying serpentine belt alignment in the pulley 79244g60.gif
    Fig. 4: Fig. 1 Accessory V-belt routing (alternator) — Mazda MPV 3.0L engine 79244g67.gif
    Fig. 5: Fig. 2 Accessory V-belt routing (power steering) — Mazda MPV 3.0L engine 79244g66.gif
    Fig. 6: Fig. 3 Accessory V-belt routing (A/C compressor) — Mazda MPV 3.0L engine 79244g65.gif
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Jul 08, 2010 | 2000 Mazda MPV

2 Answers

replacing serpentine belt on 1991 mustang 5.0 I changed the alternator but i can't get the belt back on.


Are you using the old belt or a new one? Just make sure the belt is the right one. There is only one right way to route the belt. There should be a diagram of the belt routing on the fan shroud or hood. If you can't find it, I've had some luck doing an internet search for the right routing diagram.

Sep 19, 2009 | 1991 Ford Mustang

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