When a Hoover Windtunnel becomes hard to push, this usually indicates that self-propelled has stopped working.
When this stops working, it can be caused by several things. The first, most common problem is that the belts have either broken, or stretched to a point where they no longer engage the self-propelled mechanism. In order to verify this, simply make sure that the machine is set to the Carpet setting, turn the machine on, and turn it over on it's side with the handle release pedal reclined (make sure it's not in the upright position). Is the brush at the bottom of the vacuum spinning? If no, this definitely indicates that your belts have gone bad and need to be replaced. There are two belts on your machine, one controls the brush, the other controls the self-propelled mechanism. We've shot a helpful video that walks you through step by step on how to replace the belts.
This is by far the most common problem that we see on your particular model:
The other problem if the belts are installed properly that would cause
the self-propelled wouldn't work would be the self-propelled actuator
arm. There is a cable that starts at the handle of the vacuum, and
runs all the way down to the floor head of the vacuum that controls the
transmission. As you pull backwards on the handle of the vacuum, the
cable pulls this actuator arm backwards, which then turns the wheels
backwards, and when you push forward it turns the wheels forward.
problem with the way it's designed however, is that if you pick up the
vacuum cleaner by the handle of the machine rather then using the
carrying handle on the back of the vacuum, it causes too much tension on
the actuator arm, and will cause the cable to rip right out of the arm.
is a VERY common problem on this model. To check and see if this part
is broken on your vacuum, step on the handle release pedal so that the
handle is in the vacuuming position, push the pedal a second time so the
machine lays flat on the floor.
Now if you look right behind
the height adjustment switch, and the rug / floor switch where the floor
part meets the upright part, you should see a cable that connects into
the actuator arm. Pull up and down on the handle and look for
movement. Is the cable loose with only a nut attached to it, or is it
resting in the actuator arm?
Here's a very helpful link that
shows you exactly how to replace the actuator arm:How to Replace the Actuator Arm on
Hoover Self-Propelled Windtunnel
If this didn't help you,
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