Knocking sounds The dryer makes a knock sound when on. It does not make this noise if I spin the tub manually

Check the tensioner pulley that keeps the belt tight. It is next to the motor and the bearing may be shot.

Check to see that the springs that hold the tub assembly to the frame are attached. Sounds like one may have come off on the machine.

Hi,
Here is a tip that I wrote about dryers and noises...

It will help you determine what is happening there...

Dryer Repair Squeaks, Grinding, Clicking and Knocking Noise


heatman101

Asker's Testimonial "That answer was very informative - thank you fortaking the time to educate me. " - teresa241964

sounds like the drum isnt balanced. either make sure appliance is properly balanced on the floor or make sure you are not overfilling the tub.

SOUND LIKE INNER TUB AND BEARING AND SUPPORT SHAFT...# W10250573 $364.00 INNER TUB AND SHAFT..REAR TUB AND SEAL#8181912 $224.00 VERY TIMELY AND EXPENSIVE REPAIR CHECK WARRANTY ON WASHER

Hi,
Here is a tip that I wrote about dryers and noises...

It will help you determine what is happening there...

Dryer Repair Squeaks, Grinding, Clicking and Knocking Noise


heatman101

Hi,
When my washer did that, I found that the shocks that hold the tub were bad...

Check out this tip I wrote about that...

http://www.fixya.com/support/r3663122-washer_problems_washer_noise_when

heatman101

It is your motor.

how old?sounds like the bearing are going bad,on yours the tub and bearing are one unit,so you have to change out the whole thing-mike

Ours started knocking several months ago and then progressed to a high pitched sound when in the spin cycle. I manually turned the drum and heard and felt a bearing roughness. I lifted the drum assembly and felt a fair amount of play, which I think the initial knocking noise came from. On the sears web site a new rear drum mount cost 293.00. Today we went and bought a LG model wm2455hw at Home depot, on sale until 2/20/08. I couldn't see paying to repair a machine that only lasted four years.