Problem with the John Deere 6120 differential lock

Problem with the John Deere 6120 differential lock Problems

Problem with the John Deere 6120 differential lock. I bought a John Deere 6120 and used it for 1 year and there was a problem with the differential lock. Maybe I’m doing something wrong? Or I don’t know something?

No need to hire a professional to maintain the tractor. You can see how to carry out the tractor and study the theory.Rotation is transmitted from the engine to the wheels. It passes the path first through the gimbal or belt drive to the driven wheel. The driven wheel is connected to the satellites, and they already rotate the suns leading to the wheel disks. Most of this scheme (the driven wheel, the driver, the satellites and the suns) fits in a compact gearbox. One of the tractor wheels rotates slower at the moment of turning or when hitting an obstacle, but it does not slow down the movement of the satellites. In such a situation, all the torque is transferred to the wheel that remains free.

When both wheels are connected to the engine, there is an acute problem of wheel slippage when turning. It is solved with the help of a differential. On the ground, you can turn the tractor without a differential. Because when the car gets stuck, the remaining free wheel slips due to increased speed. In such cases, a differential lock is needed. This function is not available on all tractors. This locking washer on the differential of the John Deere 6120 tractor connects the sun to the shaft and the driven wheel. Now the axis is again a single whole. Although one of the wheels is difficult to rotate. When the axle is fixed, both wheels turn with the same force, and this helps to overcome the slip.

to date, there is no universal (ideal) lock. More precisely, there is no ideal differential. Such a differential that would work correctly on asphalt in urban conditions, on high-speed highways, on light and serious off-road, on a slippery road.What should this ideal differential be? Let’s try to formulate the main requirements for it.

  • It should ensure the rotation of the wheels at different speeds. This is most clearly manifested in turns. The usual free,” classic ” differential, which stands on the absolute majority of n, successfully copes with this task.
  • The ideal differential should be guaranteed to transmit power to both wheels in bad road conditions, that is, off-road. It is highly desirable that it has a lock factor of 100%, which is necessary to overcome the diagonal hang.
  • The differential must be automatic. The driver should not be distracted by switching the modes of one of the many mechanisms of the car. Imagine a situation when the driver switches the engine operation modes in manual mode, for example, with pre-ignition. And such a manual system was used on cars. Manual control of the differential lock is as archaic as manual control of the ignition.
  • The ideal differential should instantly switch modes. Road conditions change very quickly. If the automatic differential does not keep up with changes in road conditions, then its operation cannot be called optimal. This requirement is very important to ensure the stability and controllability of the tractor on slippery surfaces.
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