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AUTONET TV

Drive Train - What You Need to Know in Corvallis

Posted November 28, 2017 1:46 AM



One Corvallis automotive service issue that doesn't get much attention is driveline service. Drivelines don't get talked about very much around Corvallis, but they're very important. First let's define what the driveline is:

Taking a small step back, the power plant is comprised of the engine and transmission. The driveline starts there and includes all of the components that transfer power from the transmission to the wheels.

That's not really a lot of components, but they handle the full force of the engine. Without the driveline you're not moving. So Corvallis residents need to take good care of it. The driveline components differ depending on whether your vehicle has front wheel drive, rear wheel drive, all wheel drive or four wheel drive. For purposes of our discussion, we're going to have to oversimplify a bit.

If you are ready to have your drive train looked at, give us a call at 541-752-3316.

Let's start with front wheel drive. The point where the transmission stops and the driveline begins is a little blurred with front wheel drive because the transaxle houses both the transmission function and the differential function. The half shafts that send power to each front wheel come out of the transaxle. The shaft is connected to the wheel by a constant velocity, or CV, joint. The CV joint is protected from dirt and water by an airtight, flexible rubber boot.

So, D & B Bear Service driveline service would include properly servicing the transaxle and inspecting the cv boot to see if it's torn or loose. If it is, it needs to be replaced and the CV joint inspected for damage. Repairs may be in order. Besides visual damage to the airtight CV boot, you might hear a clicking noise when turning. Recommended maintenance for the transaxle and CV joints will be spelled out in your owner's manual, or check with your friendly and knowledgeable D & B Bear Service service advisor.

On to rear wheel drive. The driveline for a rear wheel drive vehicle starts with the driveshaft – that long tube that connects the transmission with the differential on the rear axle. Some vehicles in Corvallis have a two piece drive shaft. The shafts are connected to the transmission and the differential with big universal joints. Most Corvallis residents have probably heard the term 'u-joints.' These joints can wear out, just like the CV joints in front wheel drive vehicles. You may hear some clunking or feel a jolt when shifting into drive or reverse – if you do, get your driveline inspected at D & B Bear Service in Corvallis.

The differential on the rear axle sends power out to each rear wheel through half shafts in the axle. The differential fluid needs to be drained periodically and replaced with clean fluid. When the seal on the end of the axle is damaged or leaks, the axle will need to be serviced. The routine maintenance item here is differential service. Be sure to check your owner's manual or Corvallis service advisor for intervals.

Now let's go on to all wheel drive. Remember that the difference between all wheel drive and four wheel drive is that an all wheel drive vehicle is essentially providing power to all of the wheels all of the time. The vehicle may be able to shift more of the power to the front or to the back depending on where you need traction. All wheel drive vehicles are designed to work well on dry pavement. Even some high-end sports cars from makers like Lamborghini and Porsche have all wheel drive.

Some all wheel drive vehicles are designed to work well off-road in Corvallis, but all hard-core rock crawlers are four wheel drive. These guys thrive in mud, sand, rocks and hills – but they don't work well on dry pavement when they're in four wheel drive. So they have the option to shift to rear wheel drive only on dry pavement.

Most all-wheel drive vehicles are very similar to front wheel drive when it comes to the front end. They also have a center differential that transfers power to the rear differential. Connecting it all is a shaft from the transaxle to the center differential and another from the center differential to the rear differential. So all of the normal front wheel drive service is recommended as well as service to the center and rear differentials.

Four wheel drive can be thought of as a rear wheel drive vehicle that can also send power to the front axle. There's a transfer case in the middle of the vehicle that can be shifted to send power through a drive shaft to a differential on the front axle. So Corvallis residents need differential service for the front and rear differentials and for the transfer case as well.

The bottom line for Corvallis residents is that the maintenance schedules are in your owner's manual. Your Corvallis service advisor can answer any questions you've got. If this is the first time you've heard some of this stuff – it's time to ask someone at D & B Bear Service if any of it needs to be done now.

D & B Bear Service
305 NW 2nd
Corvallis, OR 97330
541-752-3316



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What Our Customers Are Saying

I worked for and was service manager at D & B BEAR for 31 years and have recently changed careers. Owner Denny Rice is a one-of-a-kind suspension specialist & provides a great family-driven full-service shop that you can count on. Thank you for the time spent with you all.


-Steven Graves

My parents have owned D & B Bear service for nearly 40 years. They pride themselves on being honest and always putting the customer first. They also have always offered friendly service. My father started working at his family's business when he was 12 years. His experience is something that you don't find that often. If you are looking for great, friendly, honest service, give Jack a call today.


-Jeanette Doane

We discovered these guys from a person who sold us a used car. It was a '94 Honda they had been responsible for since it was new. I have been driving for 55 years and have used many repair shops in many cities. We have used these guys on many occasions in the last several years for all of our cars' repairs. I used to work on cars myself when I was young so I know when I am getting BS. These guys are very very good - the best I have ever had. Do yourself a favor and give them a shot.


-James Denning

Great, friendly service. They kept me informed about the progress and estimates for the repairs they did throughout the day. I will always take my car back here as long as I live in Corvallis.


-Anthony Zak

They have done me right a couple times now by coming in with quotes under others, and never going over their own quote, and my truck has been great!


-Robert Voss

Very knowledgeable and friendly. We were recommended to them by our neighbors and rightly so! They did a great job fixing our car and did it so fast it surprised us and all of my coworkers. Thanks for getting us back on the road so quickly.


-Steve Z

Super friendly people, extremely helpful. Took a look at my brakes and explained the problem piece by piece to me, so I could make an informed decision. Wonderful folks, I'd recommend them to anyone, and I will definitely be returning for any future car issues.


-Steven Alexander Czyz

Great friendly service and reasonable.


-Larry Hood

They helped me so quickly and treated me so nicely! Fair price and some really nice people.


-Kelly Conklin

Les Schwab wanted me to do some major repairs. I took my car to D & B, and they said my car didn't need it. The dealer is more expensive, and they want to do additional maintenance than D & B recommends. These guys are honest, and they are not just in it for your money.


-Jared Martinsen

We had some problems with our radiator on our way home for Thanksgiving and ended up at D & B. They told us we needed a new radiator, but it was late in the day, and no one in town had one. We didn't end up having the work done here because of travel logistics, but they were very helpful and kind enough to let us hang out in their office with a dog and baby while we figured out our tow truck. Very nice folks.


-Ryan King
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