Kenmore 116 31100903 no suction and i have cleared out the hoses connecting the floor to the hose and the hose to the bag. there is a spot in the back that seems to be sucking air. is this normal?

SOURCE: No vacuum suction during normal floor cleaning operation

That door is called a valve door, and it may have broken, part #38718013. Or the valve arm, rear broke, part number 38719048. The spring part # is 38358001. Usually it is the valve arm that breaks. You would have to take the top cover off, then you can see the parts.

SOURCE: Bosch Vacuum Cleaner: I changed

Greetings from GoVacuum.com,

It sounds like you may have a bad thermal switch inside the machine. Most vacuum cleaners have a switch connected to the motor, so if the vacuum cleaner is running hot, it will shut off to prevent any damage to your motor. You did all the right things by checking the bag, making sure the hose was NOT clogged, and replacing HEPA filter.

Most of the time on canister vacuums, the reason is caused by a clog in the hose, or somewhere in the powerhead. If you're sure that there is no clog anywhere, it is going to be the thermal switch on the motor.

Here's a link to the parts schematic for the Bosch upright vacuum. I hope it helps you in determining how to access the thermal switch. A word of warning to you before you try it, this is a very tough vacuum cleaner to work on, you may want to bring it in to a vacuum repair shop, as this is not an easy repair.

Here's the link;
http://www.essco.net/Customer/SchematicFrame.asp?FileName=Turbo%20jet%20upright.pdf

Please let me know if you have any other questions,

Chris Jones
GoVacuum.com
1-866-468-2288
[email protected]

SOURCE: kenmore vacuum model 37105 no suction

are the brushes moving?if so , it is clogged somewhere, that is my guess

SOURCE: brush spin,good suction at hose, no suction at

Air passage from back of brush head, through the joint, and up to bag, may be blocked.

SOURCE: Hoover 6446 900 WindTunnel Bagged Upright has

check for a clog in the brush hose