In the center of the drum/pully there is a bolt (or nut, depending). This is what is locking the pully in place. Loosen it (no more than it takes to free it) befor turning the adjuster. Be sure to loosly snug it down to check your final adjustment and if correct, then you can tighten it all the way. (If it is too loose when the adjustment is set then the drum/pully will move when you tighten it and throw off the adjustment.)
On my 97 3.5L you have to loosen the bolt (15mm)on the front of the idler (loosen, don't remove) then go underneath and the is a 13mm bolt that adjusts the position of the idler for tension. Loosen this and the idler should loosen up.
Idler pulleys are used to maximize belt contact with other pulleys and to redirect belt around other parts that might interfere with 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.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.
Replace the tensioner assembly as one piece.
They very in price, depending on the car, from around $12 to $80.
there is one, but two if you count your belt tensoiner.
only if the idler arm will not hold the tension on the belt and the pulley needs replaced when the are warn sharp or warn flat
The engine usually has an idler and/or tensioning pulley as well as a few pulleys that use the power of a traveling serpentine belt to drive components such as the alternator, a/c pump, etc. Any of the pulleys that have one or more grooves that assist to guide the belt(s) are, technically, sheaves. Idler or tensioner pulleys that are completely flat because the flat back of the belt rides on them are not sheaves, but are 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
Hey, yes the Idler Pully nut is reverse tread (you have to turn right to loosen this) this is because you turn left to loosen belt tension. I believe this is true for a lot of GM engines.
The idler pulley is attached by a 14mm hex head bolt. Although the pulley turns counter-clockwise, suggesting that the bolt might be left-handed threads, it is in fact right-handed. A 1/2" drive ratchet with a 14mm socket will loosen the bolt if turned in a counter-clockwise direction. Be sure and loosen the belt tensioner, located below the alternator, and loosen but not remove the other alternator bolts, prior to removing the idler pulley.
no those cars suck
idler pulley, the only one that will move
Put an 18mm wrench on the lower tensioner belt and rotate CCW to loosen the tension. Remove the belt from around the alternator pulley, and slowly release the tensioner. Unwrap the belt from all the pulleys and install the new belt following the belt diagram located near the radiator support. ALWAYS make sure the grooved side of the belt is contacting the grooved pulleys, and the smooth side of the belt is contacting the smooth pulleys (Idler pulleys). Groove to Groove -- Smooth to Smooth
Take it to the dealer! It's not a job for the timid or any shop that doesn't know what they are doing. Make sure you get the idler pulleys and automatic tensioner replace along with the timing belt. If the bearings seize in those idler pulleys it will ruin the belt and in turn take out your engine.
In automotive terms, There are drive pulleys such as the drive pulley mounted to the crankshaft on most engines. There are driven pulleys such as an alternator, power steering, water pump, a/c compressor and all the accessories driven by the drive pulley. There are idler pulleys and tensioner pulleys. There are timing belt pulleys. And for non automotive related terms, There are block and tackle pulley systems. There are pulley hoists. Wire rope pulley blocks. Cable pulleys. Rope pulleys.
The serpentine belt has an idler pulley along it's path that has to be detensioned in order to easily put on a new belt. The idler should be near the top of the front of the engine. In order to loosen the tension you will have to get either a large socket (preferable) or a good sized adjustable wrench to put on the bolt in the center of the pulley. I believe that you turn this in a counterclockwise direction and it will ease up on the tension. You should have a sticker on top of the radiator that shows the routing of the belt. Put the belt around all pulleys per the sticker and then with one hand loosen the tension on the idler and slip the belt over the idler pulley. There is no tension adjustment other than what is provided by the idler pulley spring which is built in. After you do this once you'll find it to be one of the easiest repair jobs you can do and the belt is available at any auto parts store.
The idler pulley is on a spring loaded arm. To release the tension, use a long breaker bar, or a long pipe on a box wrench. Use the proper size wrench or socket, and put it on the idler pulley bolt head. Rotate the idler arm assembly in a counter clock-wise direction and the tension will be released. Then you can remove the belt. Hint use rubber bands to keep the belt on the other pulleys while replacing the alternator. Joedi
Get a manual on your car and it will give you the procedure.
take pressure off the belt by pulling back the spring tensioner. Remove old belt, put the new belt on all the pulleys but the idler pulley, pull the tensioner back slip belt on to idler, Look to make sure you have the belt on all pulleys good, your done.
The serpentine belt on a 2003 Toyota Rav4 can be loosened by turning the retaining bolt on the idler pulley. The belt can then be shifted inward to loosen.
the alternator belt is the one all the way in the back. You have to loosen the power steering pump, A/C idler pulley, and then loosen the alternator.
Worn or incorrect belt. Defective, glazed idler or pulleys.
There is an idler pully next to the PTO clutch. Loosen the nut and slide the pully to loosen or tighten the belt. Hope this helps
Use a "straight edge" to make sure that the "valley" area (where the belt rides) is in alignment with the other pulleys