Kenmore 110.88670100 dryer issues; running but not good

[Prevent]

I have a 110 volt Kenmore 110.88670100 dryer that recently started working badly. When I would push the button after turning the timer there would be a loud sound of an electrical current but the tumbler would not engage. If the button was pushed heavily eventually no electrical sound. After awhile the button would go back to loud electrical sound and the tumbler not engaging. When taking the top off the sound seems to generate from the circuit board and timer assembly. I have replaced the plug in, the band that goes around the tumbler, and the push to start switch. Whenever I had the top off I would push in the start switch and see a light flash in its assembly. When pushing in the start knob I push the button a little to the right and it does turn on. I have ordered a new push to start switch and a board and timer assembly. Does anyone have any ideas? Any help would be greatly appreciated.

[Daniel.A]

Sounds like the motor is not starting. Based on the description, it sounds like the motor is getting voltage, then kicking off when the thermal overload in the motor kicks open.

I would start by trying to turn the drum by hand. See if it moves, or is stuck. If it's stuck, assess the blower wheel for obstructions and assess the drum rollers to see if any are seized.

If the drum spins without obstruction by hand, keep the door open, depress the door switch, press start and try to spin the drum by hand. If it doesn't start, then I would consider replacing the motor.

This is just a summary of an approach I would take, but that doesn't necessarily mean the motor is definitely the bad part.

[DADoESTX]

9 hours ago, Prevent said:

I have replaced the plug in, the band that goes around the tumbler, and the push to start switch.

9 hours ago, Prevent said:

I have ordered a new push to start switch and a board and timer assembly.

Plug in, does that refer to the power cord?  Band that goes around the tumbler presumably is the belt.  You've replaced the push-to-start switch once, and are replacing it again along with the timer?  What board?  The timer is listed as no-longer-available, from where are you sourcing a replacement?

Or perhaps the start switch on the motor (not the push-to-start on the console).  The motor start switch is listed as no-longer-available and substitutes to replacing the entire motor.

[Prevent]

Quote

Plug-in on power cord yes. Band is the dryer belt. Board and timer are one unit. I have sourced used parts on Ebay and that is best I could find. Motor I have sourced from a retailer but had to return since they sent a package of parts (rollers and pulley kit) WITHOUT the motor. I forgot to mention that after this started happening I DID get the dryer going and was able to dry some clothes normally with the occasional strange smell and stop at random. I was able to push the start button slightly to the right and the drum turned when the button was pressed. But then it will stop doing that too and go back to the drum not turning (as it is doing now even after it did turn on when checking it empty this morning.)

 

[Prevent]

Update: per Daniel.A's suggestion got drum moving after manually turning the drum while engaging start button. Burning smell came again after disengaging start button. Obviously not enough juice to engage drum starting. Still a need to replace motor? Thank you all for the help.

[Vance R]

5 hours ago, Prevent said:

Still a need to replace motor?

Unplug the dryer, disassemble dryer and remove the belt. Turn the motor by hand, should turn pretty free. It is is tight feeling check the blower are for drag. If the motor turns free by hand set the dryer up to run without the belt. Do a test run to see what happens. Report back the results. 

[Prevent]

If it is tight feeling check the blower for drag?

[Vance R]

44 minutes ago, Prevent said:

If it is tight feeling check the blower for drag?

Item 7 in this parts explode view. The blower wheel is one of the motor.  If something get stuck in the blower or if over time lint builds up it will put drag on the motor. 

[Prevent]

Yes that is the diagram. I did not realize this. Thank you. Still cleaning.

[Prevent]

We have given up. Disassembled the back, blower was fine just dirty, put it back together, did some cleaning but not much, kept the heater assembly intact (even though I did try to clean lint around it on the wires) reaching my fingers up to feel the heater coils, reassembled, took belt off, (test with belt off seemed fine, turned it manually, did some cleaning around shaft) but with drum out tested again and saw fire around heater/coil assembly. Fire burned out. Took it outside. Looking into buying a more recent model. Thank you for the help. Don't want to give up but parts scarcity plus cost of scarce parts plus worry of hazard are beginning to rear itself. Have had it for 15-20 years.

[Prevent]

Thank you all. Side note how do I determine the cubic feet of this model I was working on? It is a 120 volt Kenmore 110.88670100. It did not say on the info plate.