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How do you take loosen the idler pulley - 2003 Nissan Altima

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There's a bolt in the center of it. You just loosen that to allow it to move and remove tension from belt. If removing completely unbolt and swap. Bolt in new one. To add tension doing the reverse I often use a small crowbar to add tension, tighten bolt.

Posted on Sep 03, 2010

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What do i do to get new belt on


FOR THE 3.0L ENGINE IF YOU REPLACE AC BELT LOOSEN TOP IDLER PULLEY CENTER BOLT. IF YOU REPLACING ALTERNATOR AND WATER PUMP BELT LOOSEN ALTERNATOR ADJUSTMENT BOLT AND PIVOT BOLT.IF REPLACING POWER STEERING PUMP BELT LOOSEN POWER STEERING PUMP ADJUSTMENT BOLT AND MOUNTING BOLTS.****** FOR THE 2.4L ENGINE TO REMOVE POWER STEERING BELT LOOSEN TOP IDLER PULLEY.FOR ALTERNATOR AND WATER PUMP BELT LOOSEN ALTERNATOR ADJUSTER BOLT, PIVOT AND MOUNTING BOLTS.FOR AC COMPRESSOR LOOSEN LOWER IDLER PULLEY.

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How to change alternator belt


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alternator and air conditioning compressor
  1. Disconnect the negative battery cable.
  2. Loosen the idler pulley bolt.


The replacement of the inner belt on multi-belted engines may require the removal of the outer belts.
To replace a drive belt, loosen the adjusting and mounting bolts of the component which the belt is driving. Move the component inward to relieve the tension on the drive belt.
Slip the belt off the component pulley and match the new belt with the old belt for length and width. The old belt will be slightly longer. After a new belt is installed correctly, adjust the tension.
  1. Turn the adjustment bolt at the top of the idler pulley bracket. Clockwise rotation will tighten the belt; counterclockwise will loosen it.
  2. Keep the idler pulley bolt snug (but not tight) while adjusting belt tension. The adjustment bolt should turn with moderate force.

After adjustment is satisfactory, tighten the idler pulley bolt, and then tighten the adjustment bolt.


Reconnect the negative battery cable.

When replacing more than 1 belt, it is a good idea to make note or mark what belt goes around what pulley; this will make installation easier if you mix up the belts.

Sep 25, 2010 | 1997 Nissan Maxima

1 Answer

How to tighten belt on 2004 nissan quest


Best to remove the front passenger side wheel. Then snap out the clips that are holding the plastic cover towards the front. Now it will expose the belt area. Loosen the locking nut of the tensioner(idler) pulley located to the right of the Crankshaft Pulley. Crankshaft pulley is the one that handles both belts (alternator and the power sterring pump). Right to that next to it, upwards is the idler pulley. You will find the alternator pulley to the right of that further up. Open the hood of the van and locate the adjusting nut behind the alternator on the idler pulley from top and loosen that as well. Once both these are loosened, belt will loosen and will be easy to remove. Now replace it with the new belt the same way it was wrapped. Go over the crankshaft pulley; under the A/C compressor pulley; over the alternator pulley; under the idler pulley. tighten the adjusting nut from the top through the hood until the play on the belt (when pressed in) is less than 1 inch. Now lock the tensioner pulley by tightening the locking nut. Start and run the car for 15 mins to see if everything is ok.

Jul 28, 2010 | 2004 Nissan Quest

1 Answer

How to loosen the idler pulley?


Generally you need a large enough breaker bar to force the pulley to move. It takes more than a socket or standard wrench. One way will loosen the nut. That is the wrong direction. Enough leverage and the pulley will move and the tension is relieved.

Apr 11, 2010 | 1998 Toyota 4Runner

1 Answer

What do you loosen to remove serpentine belt from 1991 jeep wrangler with ac and power steering. thanks 4 cyl. 2.5


There is an idler pulley close to the power steering. Loosen the bolt that goes through the front of the idler pulley first. Then you will see the head of a bolt looking up at you. Turn the bolt clockwise to tighten and counterclockwise to loosen. The pulley is attached to the threaded bolt and it moves the pulley up or down as needed to adjust the belt tension. When the belt is replaced turn the bolt until the belt is tight. Remember to check the belt again after a few hundred miles. A new belt will stretch and loosen.

Dec 08, 2009 | 1991 Jeep Wrangler

2 Answers

NEED TO TIGHTEN FAN BELT ON 1997 JEEP WRANGLER


If a 6cyl, from the front of engine, loosen the idler pulley with a 15mm wrench. It's on the left side of the engine. Then from the top, use a 15mm socket on a 6 inch extension, and tighten the adjustment bolt that is mounted diagonally just behind the idler pulley. takes alot of turns to tighten the belt. Then retighten the idler pulley bolt with wrench.

Nov 05, 2009 | 1997 Jeep Wrangler

1 Answer

Power steering belt on 1991 toyota camry


Locate the idler pulley. Loosen the nut in the center of the idler pulley. Then loosen the bolt that protrudes from the back of the pulley. This will let the belt go slack.

Jul 16, 2009 | 1991 Toyota Camry

1 Answer

Changing V belts on Nissan Frontier 2002 4cyl


That should be right if it is an idler pulley. On belts that do not have idler pulley you will have to loosen lock bolt on adjuster. Like alternator

Mar 23, 2009 | 2002 Nissan Frontier Crew Cab

2 Answers

AC belt on 1999 Chrysler 300M


When you replace the AC belt you really should replace the serpentine belt as well, since you will have to take it off already. If you don't do it now it is inevitable that you will have to replace it in like 3 weeks anyway : )

You need to first remove the serpentine belt by loosening the nut in the center of the idler pulley. After that you will need to loosen the push bolt on the side of the idler pulley. The hub bolt is a 15mm size and the push bolt on the side of the tensioner is a 13mm I think. After you loosen it sufficiently, you will need to pull off the old belt.

Next you will need to loosen the tensioner pulley for the AC belt as well. It is the same process. The main issue is space. You will most likely need to raise your car to get at the right angles to loosen these pulleys.

Once you loosen the idler pulley in the same manner as you loosened the other, you can slip the AC belt onto the back of the crank pulley and route it as the diagram under your hood instructs you. Next tighten up the idler pully in the opposite way as you loosend it...tighten up the push bolt until the belt play is within factory specifications, then tighten the hub bolt in the center of the pulley. Do the same for the serpentine belt and you should be up and running in no time. I just performed these tasks on my 2000 300m and I wish someone would have told me this before I started my project. Hope this helps, Good Luck!

Mar 22, 2009 | 1999 Chrysler 300M

1 Answer

GET TENSION OFF THE IDLER PULLEY


loosen nut in center of idler pulley ..then loosen tension bar with 12mm socket til it walks away to remove belt

Jan 14, 2009 | 2003 Nissan Sentra

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