B737’s have been known to develop “chattering/shuddering/slight binding” of it’s Aileron Control Wheels through the full range of travel. While this “chattering/shuddering/slight binding” can be indicative of bearing failure it more often than not is caused by a sticky Paddle and Fork Assembly Surface as shown in attached photos.
![737 AF Detail 2600](https://www.sjap.nl/wp-content/uploads/737-AF-Detail-2600.jpg)
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