Question about Hoover U6437-900 / U6439-900 Windtunnel Bagged Upright Vacuum

1 Answer

No vacuum suction during normal floor cleaning operation

Hose for attachments has suction but floor vacuum doesn't work.
When in the upright position, a lever closes a door in the suction line so that the hose can be disconnected and used with attachments. When the hose is re-attached and cleaner is moved from the upright position to the floor-operating position, the lever disengages and I believe a spring is suppose to return the door to an open position.

the spring load on this door is not working properly and the door remains closed. i can see a torsion spring wrapped around the lever but apparently it either doesn't work the way i'm imagining it or something changed with the spring.

Anyone ever see this before? (this is actually a U6632-900, upright, self-propelled, whirlwind).

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  • 2 more comments 
  • Anonymous Feb 07, 2008

    I have little suction to almost no suction.

  • beansie201 Nov 06, 2008

    I ordered an received the replacement parts for the actuator arm assembly and valve arm rear; however I am having trouble negotiating how the spring and new parts fit in. I tried finding the schematics for my hoover wind tunnel u6637-960 without any luck. please help

  • Anonymous Nov 30, 2008

    u6637-960 the lever disengages

  • Anonymous Jan 18, 2009

    Can anyone please post a picture of this mechanism assembled. I have the exact same problem with a hoover u6637-900. I can't figure out how the spring goes. Thanks.

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  • Master
  • 1,673 Answers

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.

Posted on Jan 29, 2008

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