19

What is a Differential ? A differential’s job is to compensate for differences. Specifically the differences in wheel speed when turning. For instance, imagine taking a corner. Your inside wheel has a shorter distance to travel than the outside wheel as you go around the corner. That means that your outside wheel has to turn faster to keep pace with the ...


8

My suggestion would be to buy a differential bearing and seal kit for the rear end yourself and have a knowledgeable mechanic install it for you. This, as the name implies, consists of bearings and seals. A master kit will have the shims in it as well, but when you are just doing bearings in the diff, you can usually put the old shims back in to get ...


6

While the other answer is basically correct, it really doesn't tell you why it does this. These two things are related because of the differential. The differential is made to allow either side to spin at different rates. There are three connections to the differential in a rear wheel drive vehicle: drive shaft (from transmission); left axle shaft; right ...


5

When buying a used car it's usually a good idea to change all fluids, just so you know exactly when they were changed, and can start your own fresh service history. This may be part of the reason why the dealer recommended these services. Like almost any other fluid used in a car, time, environment, and use will eventually cause degradation and decreased ...


5

In a word: Absolutely. The bearing you are pointing out is the carrier bearing for the differential, which keeps lateral movement (forward/aft) of the ring gear to a minimum (if not non-existent). If the carrier bearing is destroyed, chances are your ring/pinion gears are both destroyed as well. (NOTE: The above is changed after a clarifying comment from @...


4

You need to check for evidence of gear oil leakage from the rear differential of the vehicle. It sounds like you are low, causing the noise. If it is low, and you have been driving it for a while like this, you may have caused damage to the ring/pinion gears, or possibly the bearings. The obvious places to find leakage is at the pinion seal, which where ...


4

https://mechanics.stackexchange.com/a/25370/12697 Covers the physical arrangment of gears in a basic differential. The key to understanding a differential is to understand how these gears behave under different scenarios. The gearing arrangement means that relative to the crown wheel the two half shafts are constrained to turn by equal and opposite ammounts....


4

From page 200 for the 'Rear Differential Lock' diagram... The 'RR Diff Lock' switch simply passes ignition voltage (+12) to an input on the ECU (R) pin. When the ECU sees this signal it controls an electric motor to lock the differental via the (M1) (M2) pins. This happens via an h-bridge (inside the ecu), which is capable of reversing the current through ...


3

Yes it is related, both drive shafts (cv shafts) must be connected and in working order for park to work, use the e brake like you have been. Replace the cv shaft and all will be working again.


3

You need to discover what your current rear differential is, then you can proceed forward with what you might be able to do for the Blazer. If I'm seeing things right, your rear end should be of the 10-bolt 7.5/7.625" variety (used in both the 4cyl/6cyl, 4x2/4x4 models). It can, however, utilize either the 26 or 28 spline axles. You should be able figure ...


3

When the rear diff fails, one of two things can occur which will let you know it's gone south: Noise: - When driving, you'll be hearing a lot of noise from the rear, especially when going around a corner. It could start out by it having a lot of whining, with it continuing to get louder over time. This usually happens when the bearings start going bad, ...


2

You need to find the RPO (Regular Production Options) list on the Service Parts Identification label. Similar to what is pictured below. It will likely be on the spare tire cover or the glove box, but may also be in the door jam or under some other compartment lid. Each on of those three digit number/letters indicates an option the car is equipped with on ...


2

If you have any doubt at all that the RPO code sticker is accurate (like, maybe someone swapped the rear differential), you can tell an ordinary open diff from an LSD by jacking up the rear end of the car, releasing the parking brake, and turning each rear wheel in turn, leaving the other one free to turn by itself. With an open differential, the opposite ...


2

Gear ratio is the only difference. 3:73 to 1 is the lowest ratio which means it will be faster in the short run, stop light to stop light. 3:15 to 1 is the highest gear ratio which means it will be faster on the top end, highway. The first number means how many revolutions the drive shaft turns for one revolution of the rear wheel. The higher the first ...


2

No. The differential gear business is not in danger because of electric cars. All electric cars from reputable manufacturers use differentials, mainly for two reasons: Using a differential allows to have one bigger electric motor instead of two smaller ones, resulting in economies of scale Differential is a very sure way to guarantee that equal torque is ...


1

Stress causes the failures. Stress may also cause fatigue cracks prior to fracture. Use a stronger material and/or a larger diameter axel. Also any notches / diameter changes are critical as they are stress concentrators. A simple one time over stress will produce a flat fracture, 90 degrees to the axis. A fatigue failure will mostly make a spiral path along ...


1

As Moab states in the comments, a bad rear differential cannot hurt an automatic transmission. The only thing attaching them is a driveshaft. Other than that, they are completely independent assemblies. Even if you've already done irreparable damage to the rear end, you can most likely prolong its life by topping off the gear oil and fixing the seal. Even ...


1

Rear wheels can be put out of alignment by hitting kerbs etc. Fitting hub bearings, either semi, 3/4, or fully floating types does not affect the alignment, but collapsed bearings will - however other problems are more obvious... As for adjustment , some of the fixings are designed with eccentric bushes ie the hole is off-centre to allow adjustment, or the ...


1

No you should be ok with different sizes on the rear compared to the front. Having each side the same is better for your diff. Especially for normal driving where you have traction on both wheels as the diff is constantly working to compensate for different rotational speeds. However, doing burnouts and drifts is hard on your drive train anyway. If youre ...


1

Todays cars are so much more complex then older cars. Your CRV rear differential like so many newer cars is not just a simple ring and pinion gear set. The Honda uses "Dual Pump Fluid II" this is do to the clutches that are in the differential. I would buy the Honda fluid recommended, unless you can find a 3rd party manufacture who meets exact spec number ...


1

There are 3 different „hoses“ enter diff case in Pajero. 1. air for diff lock, 2. diff breather hose. These 2 goes into the car body. 3. wiring which goes around the diff and then to the left arm and then it ends up with the wiring connector. Oil from the diff can go into the breather and air line, but in tiny amounts. Usually diff leaks through front seal, ...


1

I assume you mean damage to the differential, not to the environment :-) If the leak is slow and you keep up with it, you can probably go a long, long time before it is anything more than a nuisance. Slow means that between checks and topping up the oil the oil doesn't drop too low. I've you've been running it dry, their may be damage already, but heavy ...


1

As Larry said, look for the RPO codes. The code you are looking for the Limited Slip option is G80. Look here for a list of RPO codes specific to your CTS.


1

From the sounds of it, you have a bad motor mount or transmission/transfer mount. The easiest way to check these is by having a friend help you: Have someone in the cab behind the wheel Start the truck and put the parking brake on While observing on side motor mount, put the truck in drive See if the motor mount has excess movement (does the engine look ...


1

Yes, this would just be the differential seal leaking. Unfortunately, it is a little harder to replace than just pulling the drive shaft and input yoke and replacing the seal. There is a value called preload which must be applied to the nut which holds the yoke onto the pinion gear. If this is not applied correctly, the rear-end has a propensity to start ...


1

Detroit lockers aren't the most streetable differentials, but they should be a little easier to deal with than what you're describing. Two things: 1- That's a lot of play in your driveshaft and it sounds like too much to be incorrectly set backlash in the ring and pinion gear. Are your u-joints and carrier bearing (if you have one) ok? While you're checking ...


1

If your limited slip differential has started to mis-behave then you really should take remedial action, it has become dangerous by virtue of being unpredictable, and it can only get worse. Depending on age and mileage you are looking at a replacement unit. You pays your money and you take your choice of which one. Overhauling a high mileage unit piecemeal ...


1

It could be any part of the driveline. A dry U joint may be binding. Have you noticed a squeek at very low speeds or when shifting from forward to reverse? Most differentials are pretty robust. If the differential came with posi-traction a fluid change may ease some of the symptoms. I believe these differentials didnot come with a drain you have to remove ...


1

You've gotten some good advice already, such as monitor the leak in order to determine how often to check the fluid level in your rear end and get the leak fixed a.s.a.p. If it's coming from one of the axle ends, brake drum shoes or rotor pads can be ruined if they become saturated with gear oil, also reducing the vehicle's braking capacity. Years ago, I ...


1

Yes - you can make the freelander into a front wheel drive vehicle. You will need to remove the IRD (essentially the center transfer case) and replace it with the same unit from a 2WD freelander. The rear drive shaft and diff should be removed, and you may need to disable some sensors depending on your locale. The rear axle housing can stay, but if you ...


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