REPLACE BELT Frigidaire stacked front loader washer dryer. Mfr. Model 3GLEH1642FS Washer belt has slipped off, how do I put it back on?

screeching sound
Sean, Bad felt gasket body to drum, if belt drive on dryer, it could be worn and slipping, making a screech, or if not the belt, the drum may have a worn bearing on its hub allowing it to run crooked and rub where it should not.
Check the attached links,instruction and guides, Good luck
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Copy and paste the link below for the Factory Service manual.

http://www.frigidaireservicetips.com/pdfs/488_3.pdf

Frigidaire washer will not take a overloaded tub without causing belt problems.
Unplug the washer.
Remove the 2 screws on the very bottom of the front washer panel.
Slide the front panel down slightly and remove it from the cabinet.
Inspect the belt around the motor pulley and transmission.
If it is worn at all it needs replacing.
You could plug the washer back in and set it to Spin cycle and watch for the motor to turn and the belt slipping to verify a bad belt.
Keep your hands,fingers and tools away from all moving parts.

available through sears but the part number is
134503900

16.00 dollars

If you think that the washing machine belt is the cause of your troubles you can find it in the very bottom of the machine (behind the front panel)
Would need more info on the dryer problem, (Is it running with no heat or not running at all)
the washer drive belt is the only easy fix on this model.
Good Luck
Quentin

front panel

belt is probably off the drum. Take the back off and put the belt back on unless the pulley is bad then you can replace the pulley.

Remove the lower panel on the back side .

Remove the front panel to the washer. Screws across the bottom. Push down on the front panel, then pull it out. Belt should go around transmission, motor pulley and tension roller.

pull washer away from wall and lay on it's back. panel will be accessable since belt is only accessible from the bottom because of the tensioner