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Belts have to make at least a 180° wrap around engine components. To do that, they sometimes have to place an "idler roller" under the component before they can route the belt to the next component. That idler roller doesn't power anything. It just keeps the belts wrapped properly around the preceding pulley. The roller has a bearing in it and sometimes that bearing wears out.
Rick
I'm a retired ASE Master/L-1 Technician. I still keep current with the latest automotive technology. Visit my blog for cool articles and TSB's: http://free-auto-repair-advice.blogspot.com
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WHAT PULLEY DO I loosen to get single drive belt on?
If you are referring to the Serpentine belt, you loosen no pulley. You simply remove tension from the belt. The tension is applied by the Idler Pulley. Pry the idler back and remove the belt.If you are referring to the Serpentine belt, you loosen no pulley. You simply remove tension from the belt. The tension is applied by the Idler Pulley. Pry the idler back and remove the belt.
What are idler pulleys?
== == it is a free pulley that works as a tensioner on any belt bolted to hold or spring loaded An idler pulley usually tensions a belt.. eg supercharger belt is kept taut by its respective idler pulley
What is a Timing Belt Idler?
It's a pulley that guides the belt
How do you replace the idler pulley on a 1997 dodge caravan?
Remove the belt, then remove the bolt holding in the idler pulley.
How do you change the idler pulley on 1994 Cadillac eldorado?
Take the belt off, un-bolt the idler pulley, bolt the new pulley on, and finally put the belt back on and Viola!!
What is an idler pully?
An idler pulley is a pulley that does not drive and is not connected to any device that is driven. It serves to either tension a belt or to route a belt to clear an obstacle.
1990 Comanche why does the sernetime belt squike?
Belt is worn out, or the idler pulley is defective. Replace the belt and inspect the idler puley.
Can the idler pulley be the problem on my car because when i brake the car dies?
The idler pulley has nothing to do with the brakes. If the idler pulley is bad it could throw or break a belt, and then your engine will stop.
How do you change the idler pulley on a 43 vortec?
Take the belt off, take the bolt off of the idler pulley, take the pulley off, put a new one on replace the bolt, and put the belt back on
Can you bypass a idler pulley with out affecting the cars performance?
It is not recommended to bypass an idler pulley as it plays a crucial role in the functioning of the drive belt system. You may experience issues such as increased belt wear, noise, and decreased performance if you bypass the idler pulley. It is best to replace a faulty idler pulley to ensure the proper operation of your vehicle.
What is the pulley under the alternator in a 1994 Chevy caprice 5.7L and how hard is it to change?
Are you talking about the "idler pulley"? They are quite simple to change. Loosen the serpentine belt by using a socket on the center of the tensioner pulley, slide the belt off the idler pulley, use a socket to pull the center bolt of the idler pulley and replace the pulley with a new one.
What is the difference between deflection and idler pulley?
A deflection pulley is used to change the direction of a belt or chain, while an idler pulley is used to maintain tension in the belt or chain. In other words, deflection pulleys guide the belt around corners or obstacles, while idler pulleys help keep the belt taut and prevent slipping.
