How to Detect Problems With the Rear Differential

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How to Detect Problems with the Rear Differential
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One of the important car parts is the rear
differential which plays a big role in the
functioning of the car.
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The main job of the rear differential is
To slow down the rotational speed of the
transmission before it reaches the wheels
To transmit the power to the wheels while
allowing them to rotate at different speeds.
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Functioning of differentials
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The engine torque drives the crankshaft, which is
conveyed to the drive shaft via transmission and
finally reaches the wheels through the rear
differential.
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It is made of gears and it works to control the
speed of the wheel rotation.
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While making a smooth turn, the differential
plays its part by keeping the speeds of all the
wheels at different levels.
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Modern cars come with built-in rear differential
mechanisms like the limited slip and locking rear
differentials.
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Types of differentials
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Locking differential
Open differential
The different types of car differentials have
been developed and designed to simply allow for
wheel speed difference are-
Limited-slip differential
Torque-vectoring differential
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Open differential
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The open differential splits the engine torque
into two outputs and allows the wheels to rotate
at different speeds.
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When one tire loses traction, then the opposing
tire will lose power as all the torque is
diverted to the wheel with no traction.
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Locking differential
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In case of locking differential, the connected
wheels always spin at the same speed as equal
torque is sent to all wheels.
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The only problem with this type of differential
is turning the car can be very difficult.
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Limited-slip differential
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It is the combination of open and locking
differentials, but usually acts as an open
differential.
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Under heavy acceleration and hard cornering, the
differential automatically gets locked when
slipping occurs.
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Torque-vectoring differential
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It is the most advanced and complicated
differential as it uses additional gear trains,
accentuating the differences in wheel speed as a
vehicle corner.
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They modulate torque delivery on demand resulting
in better dynamic driving experience but lower
fuel economy.
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Common problems
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Problems with the rear differential, need to be
resolved at the earliest to prevent further
damages to the entire drivetrain.
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LEAK
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Another problem which often goes unnoticed is the
leaking of the lubricant.
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When the lubricant level drops down, then the
friction between the gears increases and can lead
to serious wear and tear on the metals.
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The reason for the weird loud noise can also be
the drop in the level of the differential
lubricant due to leaks.
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You must replenish the fluid level to normal to
prevent any further damage as ignoring the signs
can cost a lot in repairs of the rear
differential.
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NOISE
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A common problem is noise, resulting from the
friction between the internal gears of the
differential mechanism.
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The noise is more of a growling kind and becomes
louder while you take a turn.
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Such noise needs to be attended quickly, as the
problem can grow and finally result in a complete
breakdown or major car repair.
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So, do not let the noise increase its volume and
get the differential checked out by a car
mechanic as early as possible.
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