I have the dryer Model No. DV218AG or DV209AG, I think they are pretty much the same. The belt frayed and the spring popped off of the belt tensioner. I ordered a new belt and replaced it, but cannot figure out where the spring mounts to to provide proper tension. I have hooked it up where it appears to go (you can see the spring from the rear of the dryer), but it provides inadequate tension allowing the belt to slip on the motor pulley. If i put a little additional tension on the tensioner by hand it works. If anyone had a photograph or diagram of the spring location I would be forever greatly. Otherwise, I give up and will be calling in the repair guy.

SOURCE: Changing Serpentine Belt on '01 Impala LS (3.8L)

Can u turn the nut in the opposite direction that u have been trying? U need a lot of leverage to get enough tension off to remove the belt. If u have enough room, add a pipe to the end of your wrench, u will need a lot of room to move the tensioner enough. U might have better luck buying the wrench made for that purpose at a parts store. I think I paid about 25 a couple years ago, I couldn't fit a regular socket and wrench on the tensioner, it was a very tight space.

SOURCE: tension pulley for the Serpetine belt

The tensioner is the 3 1/2" pulley located between power steering pump and alternator down about 5" on front of engine. Does it have air conditioning?
If you need the diagram please post your email address and I will email it to you as I do not know how to post pictures on this.

SOURCE: change serpentine belt and tension pulley and idle pulley and

could be the alternator, water pump
take the belt and spin all the pulleys and listen for noise and make sure they turn smoothly
another trick is to take a can of wd40 or equivalent and spray the bearings 1 at a time till the noise goes away or quiets down

SOURCE: Replace belt tensioner pulley on 1994 buick skylark

You need to put a piece of wood underneath the oil pan and place a jack underneath the oil pan/motor, loosen the motor mounts that are next to the belts, then raise the motor enough to reveal the nuts/bolts for pulley...just dont raise the oil pan so high that you crush it or break something, only enough to be able to reach tension pulley...

SOURCE: samsung dv4006 dryer belt

Possible replacement belt quality problem for the Samsung DV4006 / DV4006J / DV4015J / DV665JW and the Maytag MDE2400AZW dryers:

The original belt for the Samsung DV4006 / DV4006J / DV4015J / DV665JW dryers is a Megadyne 1975 H7. The part number is DC66-00121A, but when ordered, a Dongil 7PH1975 belt may be shipped instead of the original Megadyne. The Maytag MDE2400AZW dryer uses the same belt. The part number is 35001010, but when ordered, a Dongil 7PH1975 belt may be shipped. It seems that the Dongil belts are inadequate for these dryers. They delaminate and may fail prematurely. Even new, they cause a thumping sound each time the seam goes over the motor pulley. Other than Megadyne, another good belt is the Hutchinson 1975H7. The appliance part number is 1258288107.

Where to get an original Megadyne 1975 H7 belt:

eBay member 'appliance-parts' in Colorado, USA has emailed me that their Samsung DC66-00121A belts are Megadyne. Website: http://appliancefactory.com Email address: [email protected]

eBay member 'ladydi1975' in Ohio, USA has emailed me that their Maytag 35001010 belts are Megadyne. eBay store: Discount Appliance Parts.

Where to get a Hutchinson 1975H7 belt:

eBay member: 'zodiac300_0' in Brighton, United Kingdom. I have ordered a 1975H7 belt from them and received a Hutchinson.

Other possible causes for belt failure:

--Motor pulley designed too small. The belt may be flexed beyond it's minimum rated radius.

--Excessive heat in the dryer due to lint in the vent line or vent line too long. The Dongil belt may be less heat resistant than the Megadyne.

--Worn drum bushing DC66-00062A.

--Metal burrs on the steel motor pulley. Deburr by inserting a small screwdriver in each groove while the motor is turning without the belt.

--Belt on the wrong track. The motor pulley has nine grooves and the belt has seven ribs. The belt must be in the middle. It's easy to place it one groove forward or backward by error.

--Small scratches on the drum where the belt contacts it. The scratches may be like small knives and damage the belt. Sand with a fine sandpaper.

--Idler pulley damaged or bearing worn.

How to replace the belt:

--Remove top cover.
--Remove vent panel (in back).
--Unclip door switch from front panel.
--Disconnect wire harness from door switch.
--Unscrew panel left of control console (from behind the panel).
--Unclip panel left of control console (from behind the panel).
--Unscrew control console.
--Unclip plastic panel on bottom, front
--Remove screws behind door. Remove door.
--Unscrew large front panel, remove.
--Inspect vent line for lint buildup, drum bushing (back of dryer) for wear, motor pulley for burrs and debris, drum for scratches, and idler pulley/bearing for damage.
--Vacuum all lint.
--Install belt around drum, idler pulley, and motor pulley. The ribbed side of the belt contacts the drum. The flat side of the belt contacts the idler pulley. Press on idler pulley to stretch the spring, and line up the seven belt ribs in the center of the nine motor pulley grooves.
--Reassemble.