How to Replace the belt on pulley assemblyfor dryer dv4015j

There are plenty of YouTube videos on how to do this. The dryers are made by different manufacturers and are designed differently though. Watch the beginning of as many videos as necessary until you find one that comes apart the same way yours does. When you find that, everything inside will be the same too.

1st, Unplug the Dryer from the Power Supply.
You will need the Exact recommended Replacement "Idler Pulley".
With the Belt Ribs Facing Toward the Dryer Drum, position the belt on the tell tale Ring Mark on the Drum letting the Belt Hang Down below the Drum.
Place The New Idler Pulley into the Slots on the Inside Dryer Bottom located near the Motor Mounted Pulley.
(Face The Idler Pulley Toward The Motor Mounted Pulley)
(Hold the Idler Pulley in place in the slots)
Take the "Hanging Belt" & run the Whole Loop "UNDER" the Idler Pulley & then
Attach the "Belt Loop" "AROUND" The Motor Mounted Pulley.
That should do it.
Put the rest of the Dryer Back Together...Done!
Good Luck,
Vinnie

Most dryers are tension idler pulley directed but must first go around the grooved pulley on the motor shaft. make sure the idler goes on the smooth side of the belt and the grooved side of the belt is in the grooves on the motor shaft.

The idler pulley/tensioner fastens into two slots in the base of the dryer to the left of the motor . The belt goes around the drum then through the idler to the motor pulley ,you have to make a loop with the excess belt and feed it through the idler pulley, i normally pull the plastic pulley towards the right side of the dryer to give enough belt to go around the motor pulley then let the plastic pulley rest on the backside of the belt. do not turn the drum too much as you may pull the belt back off .

you don't have it around the idler pulley next to the motor,if its routed the correct way you will need to pull up on this pulley to get it over the motor pulley,then when you release pressure on this idler the belt will be taught then

goes around idler pulley and motor. idler pulley fits into slots on bottom of dryer and the belt tension holds it in place. looking at it from the front and going clockwise the belt goes around the drum and then around the motor pulley and thru the idler pulley. in fact if you put the bottom loop of the belt thru the pulley from the left you then loop it around the motor pulley.

pulley fits into slots in bottom of dryer near motor pulley. idler pulley will be to the left of motor pulley looking at it from the front. loop belt thru idler and place around motor pulley.

You should be able to reuse the idler pulley unless it is physically broken.
The idler pulley fits in the slots on the bottom of the cabinet (in front of the motor) with the wheel or glide facing the left side. Place the belt (grooves inward) around the drum. Pull the belt through the middle of the idler pulley from the left side and loop it around the motor pulley.

Let me know if you need more assistance.
Good luck!

REMEMBER BELT GOES AROUND IDLER PULLEY AND ATTACHES TO MOTOR SHAFT ,PULL BELT W/ HANDRUN BETWEEN ROLLER, AND PULL BACK AND ATTACH ON MOTOR PULLEY AND THAT ITS

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.