2018819 — There are many factors to consider when deciding on the right bearing seal, starting with the type of bearing you are using.

Your (compass) heading may or may not be 090, depending on both the wind correction angle (which you can solve for using an analog or digital e6-b calculator), magnetic variation of your location, and any deviation of the compass itself onboard your aircraft. Remember the following calculation to solve for your compass heading in order to fly your desired track or course (both 090).

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More noticeable at low speeds, a broken wheel bearing will cause vibrations which are typically coupled with a grinding sound.

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A wheel bearing replacement is a complex job that requires automotive repair skills and specialised tools as it involves working with a vehicle's suspension, braking, and steering components.

It is recommended that you do not drive with a damaged wheel bearing. Continuing to drive is not only extremely dangerous but can also cause extensive damage to the hub, axle and other associated parts.

The above example assumes you are using the compass in your airplane (hence why it requires so many steps to calibrate the difference between your true course all the way down to your actual compass heading). But what about a GPS? By definition it’s not using earth’s magnetic fields as a way of navigation, but rather positioning information provided by satellites. So if it shows your “desired track” is that a true or magnetic heading?

For example, my Garmin 430 GPS will present my current track as well as the desired track to get to a particular destination. This is the track over the ground I need to achieve to get to where I’m going. If the track and desired track don’t match, then I have a heading problem. Luckily if you have an autopilot that is coupled to your GPS, if you hit “nav” mode then it is going to solve for the correct heading to fly your desired track.

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The average cost of replacing a wheel bearing is £175, with prices ranging from £120 and £300. The cost will vary depending on whether the front or rear or if all of the wheel bearings need replacing. In some cases, if the faulty wheel bearings have caused additional damage to other parts of the suspension or transmission, then the necessary parts will need to be replaced which could affect the overall cost of the repair. The exact price of the wheel bearing replacement depends largely on your car and the parts recommended by the manufacturer.

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True (Desired) Course +/- Wind Correction Angle = True Heading True Heading +/- Magnetic Variation = Magnetic HeadingMagnetic Heading +/- Deviation = Compass Heading

The best practice is to replace all four wheel bearings at the same time or at the very least should be replaced in pairs, ie front or rear. This ensures that all four bearings are the same age and have been through the same amount of wear and tear. Additionally, if one wheel bearing needs to be replaced, the other three are likely to need replacement fairly soon. You can, of course, choose to replace one at a time but it’s not advisable and is often not the most economical choice in the long run.

Over time, a damaged wheel bearing can affect your car’s steering, as the weight of the bearings, or any defects in the race can cause your wheels to not sit level with the road. This can lead to uneven and premature tyre wear, and your car behaving unpredictably when turning corners. Once the problem has been diagnosed, a wheel bearing replacement should be carried out as soon as possible. * Mechanic will loosen the lug nuts of the wheel where the bearing has been affected and remove the wheel * Mechanic will remove the brake disc and caliper if needed * Mechanic will remove the hub nut holding the wheel bearings assembly * Mechanic will press out old/ damaged bearing * Area will be inspected, cleaned and new wheel bearing will be installed * Mechanic will reinstall all parts as required

VORradial vscourse

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Heading is probably the most confusing term out of all of these because it can most easily be used in conversation to replace track, bearing, or course. By definition though, heading is actually just the direction that the nose is pointed. This does not factor for wind, or the actual movement of the airplane across the ground. It only refers to what the compass reads based on where the nose is pointed.

In contrast, GPS RNAV systems may use an algorithm, which applies the local magnetic variation and may produce small differences in the displayed course. However, both methods of navigation should produce the same desired ground track when using approved, IFR navigation system. Should significant differences between the approach chart and the GPS avionics’ application of the navigation database arise, the published approach chart, supplemented by NOTAMs, holds precedence.

VORbearing

Ultimately, the time that the job will take will depend on a number of factors, like your vehicle's make and model, year, as well as other factors. Select your car at the top of this page for information on job time and cost for your vehicle through ClickMechanic.

In the rest of this post we’ll elaborate on each of these points and then also provide a real-world example that incorporates the accurate use of all of these terms.

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Course is very similar to bearing in that it’s the desired direction for your route of flight. If you are going directly from one airport to the other, your course and bearing will be the same along the route of flight. If you are flying from an airport to a VOR to another airport, your course will change in each leg, as will your bearing.

If you hear a grinding or growling noise coming from the wheels, these are signs that your wheel bearings need to be replaced.

Track is the easiest of these four to understand in my mind, because it simply refers to how you are actually tracking over the ground. When navigating in the air, your track is really all that matters in terms of getting to where you want to go. If you need to go northeast to your destination, and have a significant wind from the west, your heading might be to the north in order to achieve a track to the northeast.

Along the way though you might triangulate your position from another VOR by determining what the bearing to that station would be. You could be on the 180 radial for one VOR and the 090 radial of another one, and those are two separate bearings from the station. Bearing has less to do with your desired course as it does with describing where something is in relation to something else.

Heading is the direction the airplane is pointed, whereas track is the actual direction of the airplane tracking across the ground. Bearing is the angle between any two points, whereas course is your intended path of travel to your destination.

“There may be slight differences between the course information portrayed on navigational charts and a GPS navigation display when flying authorized GPS instrument procedures or along an airway. All magnetic tracks defined by any conventional navigation aids are determined by the application of the station magnetic variation.

360radial

Charlie Gasmire is a commercially licensed pilot and aircraft owner and has been flying since 2004. He holds both single and multi-engine commercial certificates, as well as a private single engine seaplane certificate, instrument rating, and tailwheel endorsement. He owns a 1975 Cessna 182P and shares the lessons learned both on AirplaneAcademy.com and his YouTube channel with tens of thousands of subscribers and millions of views. You can read more about Charlie’s story here.

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From the above calculation, you can determine what your actual heading on your compass will need to be to maintain your desired course to get to the destination airport.

Due to the GPS avionics’ computation of great circle courses, and the variations in magnetic variation, the bearing to the next waypoint and the course from the last waypoint (if available) may not be exactly 180° apart when long distances are involved. Variations in distances will occur since GPS distance-to-waypoint values are along-track distances (ATD) computed to the next waypoint and the DME values published on underlying procedures are slant-range distances measured to the station. This difference increases with aircraft altitude and proximity to the NAVAID.”

RadialTracking

Heading and track are really the two main categories of direction of flight, but they are further broken down into bearing and course which we will cover next.

It’s confusing because they are often (incorrectly) used interchangeably in conversation: Heading, bearing, course, and track. Even correctly used by ATC, “on course heading” is still a little misleading because below you’ll see they’re practically referring to “course” and not “heading”. So what is the difference between heading, bearing, course, and track anyways?

Your location can also be a key factor in determining the price of a wheel bearing replacement. For example, average hourly labour rates and demand in cities like London is around £50-£100 while in towns with lower demand, the labour rates can range from £35-£50. The type of mechanic, for example, a mobile mechanic vs a dealership garage technician can also affect the total cost of a wheel bearing replacement.

Magneticbearingaviation

Due to wind correction angles you might have to be heading something different than 090 in order to track 090. If you have a northerly wind, you might have to head 080 in order to track along the 090 bearing off of the VOR.

So you can be “heading” due north but if you have an incredible wind from the west, you might still be pointed (heading) due north but actually tracking over the ground to the northeast. Magnetic variation and deviation of the compass also impacts what heading you’ll need to be pointed to maintain a given track. Speaking of track, let’s cover that next.

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Bearing can be confusing sometimes because has some overlap with course. Bearing is simply the angle or direction between two points. A practical application of this is in VOR navigation. It’s a common thing to hear someone say “we are bearing 090 from the station”. This simply means that off of the VOR they are tracking on the 090 radial outbound from the station. In relation to the VOR they are bearing 090.

A front wheel bearing replacement on average takes just over 1 hour, but can take anywhere from under 1 hour to 2 hours. This is because replacing front wheel bearings tends to be a bit more time-consuming than replacing rear wheel bearings as it may require removal and reassembly of additional car parts. A rear wheel bearing replacement takes on average under 1 hour but can range from under 1 hour to 2 hours.

For this example we’re going to work backwards through the above mentioned directions. Assume you are departing an airport and your destination is directly eastbound. When you take off the course between the departing airport and destination airport is 090. In this instance the bearing of the destination airport off of your departing airport is also 090. This is also the direction you want to track the airplane so that it will stay on a course of 090.

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Track andBearing

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Wheel bearings are important components of a car's suspension system. They allow the wheels to rotate smoothly and with little friction. Wheel bearings typically last around 80,000 miles, but they can start to wear down sooner if the car is driven in harsh conditions or if the suspension is not maintained and serviced as needed.

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If a wheel bearing becomes faulty, it will usually make a grinding noise that will become louder as the vehicle moves faster. The vehicle may also feel like it is shaking, the noise may also vary in pitch as you turn the steering and travel around corners. When you notice any of these symptoms, it’s important to get it inspected as soon as possible as continuing to drive can be dangerous and cause further damage to the vehicle.

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Replacing wheel bearings is definitely worth it to extend the life of your tyres and other suspension components. You can replace all 4 bearings or just the one if needed.

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If a wheel bearing starts to fail, it will make a grinding or growling noise while the vehicle is in motion. This noise will usually get louder as the bearing wears down. In some cases, the noise can be similar to that of brakes grinding. Once a wheel bearing fails, it must be replaced as soon as possible to avoid further damage to the suspension system.

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Unless you are a qualified mechanic with the required skills, training and equipment to do the job, we strongly recommend a wheel bearing replacement is only carried out by a professional mechanic. ClickMechanic can help get you a vetted and local mechanic to carry out the work. Just enter your postcode and your car's registration number at the top of this page and select the work needed to get an instant fixed price up front.

To avoid having car owners overpaying and get a fair price for a wheel bearing replacement, we use real-time data of thousands of car makes and model data, local labour prices for wheel bearing repairs and replacements and part prices to provide an instant fair quote. Simply enter your vehicle registration number and postcode to get an instant price for a wheel bearing replacement for your car.