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Because both axles are powered. You have what's known as a 6x4 truck.. the driveshaft comes off the transmission tail shaft, and it goes into the interaxle differential pinion. That interaxle differential provides torque to both axles at all times - not just when the interaxle differential lock (sometimes referred to as a 'power divider lock') is engaged. Locking the interaxle differential simply locks it to ensure that outputs to both axles rotate at the same speed.

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7y ago
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7y ago

Both axles are being driven.

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Q: Why does my tandem axles each have a driveshaft?
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Related questions

What is 6x4 drive?

This is typical for tandem axle trucks. Two axles are live axles, and the driveshaft goes into a power divider. The power divider supplies power to both axles.


In a tandem axle which axle powers the vehicle?

They both do. The driveshaft turns a differential which distributes power to both axles.


What is a tandem axle?

Tandem by definition is two. So tandem axle is two axles. Example would be a tractor trailer having two axles next to each other is a tandem axle.


What is drive axle on a tandem rear end?

They both are. The driveshaft goes to a differential (the power divider), which supplies power equally to both axles.


What is tandem trucks?

A tandem truck is a truck with two drive axles.


What is a tandem tractor?

It has two drive axles.


How many axles on a tandem?

2 you fool


How many axles are there on a tandem axle tractor and a tandem axle semi trailer?

Five


What axle is the drive axle on a triaxle?

A tri-axle has two live axles and a lift axle.. if it's located in front of the drive axles, it's known as a pusher... if it's located behind the drive axles, it's known as a tag axle. With a tandem axle setup (which is what tri-axles, quad axles, etc. are, albeit with the addition of dead axles), the driveshaft runs from the transmission output to the power divider. The power divider is a differential which transmits power evenly to both live axles.


What axle drives a tandem truck?

There are two configurations for a tandem truck... the first - more common in Europe - is known as "single screw". The driveshaft goes to the differential of one axle, and that's the only live axle. In cases such as this, the additional axle is typically a lift axle. In N. America, tandem trucks normally use a twin screw configuration, where the driveshaft goes to a power divider... that power divider is essentially a differential, and has outputs going to both axles... ergo, both axles have power supplied to them at all times. A lot of people think that the power divider lock engages one of the axles.. this is not true.. it simply locks the outputs so that they always rotate at a matching speed.


How many axles does a tandem dump truck have?

Three - the two drive axles, and the steer axle.


What is a tandem dump truck?

A dump truck with two drive axles.