iRobot Roomba 4210 Bagless Robotic Vacuum\015 Hi! My roomba 4210 front wheel is having problems with the rotation sensor. I tested it and does’nt switch 0 to 1. I made all the diagnostic tests. Left wheel running alone (separately) fine, also the right wheel, the side brush, the vacuum and all the sensors (bumper and the others) exept the front wheel rotation sensor. But, the big brush just make a pulse (start’s and stop really quick with no 360 degre turns) and roomba turns off. Also, when the two traction wheel test is selected it only make a pulse and roomba stops again. If I want to stop the diagnostic tests with the power button it flash red quickly until the battery is removed. No sounds from my speaker. I took apart my roomba and cleaned everything (sensors, brush,electronic) but only with compressed air and paper towels.Nothing changed. Could the front wheel rotation sensor cause all these problems?? I also changed the mainboard for a other working one and now the side brush is the only motor working and all sensors (the front wheel sensor is not changed yet). I unpluged and tested the big brush motor with a 9V battery and turns fine. Please help me cause I’m out of ideas. Thanks a lot!!\015

How to Identify and Fix Common Vacuum Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced Vacuum Technicians :

Check the wheels for obstructions. Push the wheels up and down and shake out any loose debris that may be trapped in the wheel well. Briskly turn both wheels by hand and make sure they turn freely and that each wheel exhibits the same amount of resistance.
Overview. Error 1 (left) means Roomba is on an obstacle or an uneven surface and the left wheel is stuck. If this is the case, lift Roomba off the floor, place it in the center of the room and restart the clean cycle. If this error occurred on a flat surface, check the wheels for obstructions.
One of the most neglected parts of a robot vacuum is the wheel. For Roomba robots, there are three – a caster and two side wheels.
The caster wheel on your Roomba isn`t designed to last forever. iRobot recommends replacing it once a year. Luckily (and as we just saw), removing a Rooomba`s caster wheel isn`t difficult, and you can snap up a replacement on Amazon for about $9.
If the Side Brush is not spinning after cleaning, you may need a replacement Side Brush Module. Please visit the iRobot Store – Parts and Accessories, contact iRobot Customer Care, or use an authorized retailer or partner.
Error seven (7) means the Side Wheels cannot turn. This can happen if your j series robot was started on an uneven surface or got stuck on an obstacle. If this is the case, lift your Roomba® off the floor and place it in the center of the room and restart the clean cycle.
Most wheeled robots use differential steering, which uses separately driven wheels for movement. They can change direction by rotating each wheel at a different speed. There may be additional wheels that are not driven by a motor these extra wheels help keep it balanced.
Error 4 indicates the Roomba e Series left wheel cannot turn. Check the left wheel for obstructions. Push the wheels up and down several times and shake out any loose debris that may be trapped in the wheel well.
Wheel slip is common when using differential drive mobile robots as the orientation of the robot is achieved by commanding a velocity differential between the two driven wheels of the mobile robot.
If you get a more affordable model, like Roomba 675 you can expect a lifespan of up to two years. Go to the higher-end, like the iRobot j7+, and our research and testing suggest you can get five years plus of cleaning with proper maintenance.
Filters tend to last 3-4 months, rollers generally 9 months or so in average homes.
Error five (5) indicates that one or both of the side wheels cannot turn. Check the side wheels for obstructions. Push the wheels up and down several times and shake out any loose debris that may be trapped in the wheel well.
Besides regularly cleaning the brushes on your Roomba, you`ll also need to replace them from time to time. iRobot recommends replacing the two main brushes every six to twelve months.
Why does a Roomba go in circles? It`s usually a problem with sensors or with mechanical movement. While spinning in circles may look alarming, it`s rarely a permanent problem, although your robovac definitely needs some care before it`s ready to resume duty again.
Error 10 means a side wheel cannot turn. Please check the following: If Roomba gives this error when it is stuck under an obstacle, move Roomba to a new location and press CLEAN to restart. Use a Virtual Wall® to block off problem areas.
Introduction. The front caster wheel is the wheel that leads the Roomba over all of the dirt and debris so that the vacuum can pick it up.
Error 42 means that your Roomba failed to re-localize during a direct cleaning job using Smart Maps, and the map may also appear to not look correct in the app. Reasons Why This Error May Occur: Changes to the environment during the cleaning cycle (i.e. closed door, moved furniture).
There are a plethora of motors to choose from: tiny pager motors, servo motors, linear motors, stepper motors and DC geared motors. Tiny pager motors have an off-centre weight attached to the drive shaft, so when the motor spins, the motor vibrates.
Error 2 means the rubber brushes in your Roomba are clogged and need to be cleaned.
The Working Mechanism of Wheel and Axle

Wheel and Axle are categorized as a simple machine. During movement, the force of friction acts in the opposite direction to the force exerted. This enables the object to move forward with the least resistance. As the axle is attached to the wheel, it acts as a fulcrum.

Transmits tyre traction or braking forces, so a relative movement arises between the road and the tyre, i.e. the peripheral speed of the wheel is smaller or greater than the car speed. That difference is called wheel slip.
Omni wheels and Mecanum wheels are great wheels for making robots that are very maneuverable. Omni wheels on a skid steer robot removes the friction of a pivot turn since the wheels side slip.
In Unix operating systems, the term wheel refers to a user account with a wheel bit, a system setting that provides additional special system privileges that empower a user to execute restricted commands that ordinary user accounts cannot access.
Wheels with Multiple Bolt Patterns. Uni-Lug wheels are a type of wheel that can fit more than one bolt pattern.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Front wheel problem
ANSWER : I would send it to protechrobotics. they will test all your components and let you know what needs to be done. if the repair is more than it’s worth–they will help you out too.

I own a Eureka Optima 437 and one of the rear wheels are broken and cannot find parts for this. Where can I find parts for real wheel?
I have a rear wheel that came off too. The wheel seems fine, but the plastic base that the wheel clicks onto on the underside of the vac seems to have cracked. I need a new plastic bottom. Any ideas?
ANSWER : Called Eureka Customer Service and ordered another part. They are mailing it to me free of charge!

No more problem.

Ihave a Hoover Windtunnel self-propel model U6445-920. The belt from the drive motor to the big wheel will not run in the center of the wheel. The belt runs about 1/3 off the wheel. I have tried several new belts and still the same problem. What do I need to do to repair this problem.
ANSWER : The large wheel may be worn off center. If the belt stays on and is not thrown, you can run the vac. if there is wobble in the wheel causing a genuine belt to slide off replace the wheel mechanism.

Dyson vacuum I have a DC07 vaccuum. The problem I am having is that the front does not want to stay down as I vaccuum and I continuously have to keep stepping on the front to make it go back down to the floor. It seems as though there is either not enough weight in the front or possibly the unit just has to be broken in so that there is not so much resistance between the handle and the front of the vaccuum. Could there be something I did not remove or is this typical on these vaccuums?
ANSWER : There is some thing broken it is two plastic cogs they help the front go down and stay up you will have to get a star screw driver and there should be two screws on top and two at the bottom when you have undone them all you will see what i mean take them out only if there broken if there ok put them back in place and put the top and bottom back together if there broken get new ones or put in back together and you will have to lean it up all the time if you want new ones go to or .com don’t for get to wright down your model number its much easy good luck

Both of the wheels are wobbly and loose on my Kenmore upright vacuum model 721.37060. I don’t see where I can remove them to analyze and fix the problem, which seems to be that the wheels are loose on their axels. How do I get the wheels off and what do you think I’ll find inside?
ANSWER : Most if not all vacuums have an access panel on the bottom.It may be held on by a couple of big plastic clips,the kind you squeeze together and it releases a door.Some have plastic screws.There may also be a couple of phillips screws along with it or screws alone.Every one I have had for at least 20 years has the bottom open.I constantly clean the brush/rollers due to strings and such.I have found a link for your vacuum.It appears that your answer is on page 18.You need Adobe to read it.If you do not have it it is a FREE,SAFE download,no junk.I have used it for years.Good luck! Greg

ANSWER : You can download a PDF version of the manual at the link below. I believe you can contact Hoover as well and they might mail you one.

Good Luck!

Oreck XL How to remove rear wheel. Removed all viewable hair, thread, etc., but one wheel is still hard to turn. I think there’s hair stuck inside the wheel core. Can I remove the wheel & take it off the metal post?
ANSWER : You can take a medium size flathead screwdriver and slide it in beside the wheel and under the pin. Then pry carefully on one side and then the other it will start to come out but work both sides alternately so you won’t put too much pressure on the plastic. Once it is out you can clean it and put it back in. Line up the pin and use a blunt end tool like a punch to tap it back in. You can use the same screwdriver but don’t hit it too hard. You can tell when it is in all the way when it bottoms out. Make sure you look closely at it before you take it out so you will know what it is suppose to look like.

Roomba wheel — stuck
ANSWER : I had a similar problem, I just took my Roomba Red apart and put it back together about four times before I fixed it.  In my case it turned out to be a dirty sensor, fixed as described at.
.Before you open it up I recommend following the diagnostic tests to see if its a physical problem (bad motor belt, hair stuck around the wheel) or a sensor problem (dirt makes Roomba think it is stuck when it isn’t).  If you follow the diagnostics one of them will move the Roomba wheels while ignoring the sensors; if the wheels move fine then you probably have a sensor problem..