2 wd to 4wd transfer - grinding noise?

[Tacomanoob]

I noticed that sometimes the 2wd to 4wd is super smooth, not to mention driving in 4 wd is pretty smooth even in high speed. However sometimes when changing to 4wd it makes a loud grinding noise. Am I doing it wrong. Sometimes no sound and sometimes loud grinding. What is your thought.

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[Tungstenisw]

Mine "THUNKS" sometimes when going from 4H to 2x. I've owned lots of 4x4's in the past including the older hub-lock style and this seems to happen with all of them "sometimes". Gears don't always synchronize perfectly when changing 4x to 2x especially at low speeds.

personally, I didn't give it a second thought and I am not worried about it.

 

[Goriders]

My old F150 did the same thing.

 

[Miqie]

I like to change when not moving. Of course that's not always possible for some instances.

 

[Vidman]

My tundra does it most of the time..I’ve found putting in neutral helps

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