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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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∙ 16y ago
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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
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 a idler pulley used for on a ford bronco?
The idler pulley on any vehicle is used to maintain the proper tension on the vehicle's belt(s). without it belt maintenance would be difficult.
How do you replace the idler pulley on a 97 blazer?
you should be able to put a socket wrench in the front of the idler pulley. Push away from the tension of the belt, then remove the belt. MAKE SURE you remember how the belt came off. Loosen the bolts on the pulley, then remove. Install new pulley, then put the belt back on.
