Rust and corrosion on the threads causing the nut to be extremely tight coming off. The spindle can only take so much force before it breaks.
Stripped spindle/splines, linkage issues.
Check linkage first and stripped or loose wiper arm on spindle.
Check your wiper linkage under the hood and/or the tightness of the wiper arm on the wiper spindle.
Check your wiper linkage and/or the splines on the spindle.
To change the rear window wiper arm on your Nissan X-Trail, first, lift the wiper arm away from the glass. Locate the retaining nut at the base of the wiper arm and use a socket wrench to remove it. Once the nut is removed, gently pull the wiper arm off its spindle, then align the new wiper arm and press it onto the spindle. Finally, secure it with the retaining nut and lower the arm back into its resting position.
Usually, the arm. It loses its springiness/pressure against the window. The spindle is lubricated and most vehicles NEVER have a problem. The only issue that may develop with a spindle is someone 'hammering' the arm on or not mounting the arm fully down on the spindle. Then the ridges on the arm get damaged.
Either the wiper arm(s) moved on the spindle or the linkage moved or bent. See sources and related links below for wiper blade information.
To change the windscreen wiper arm on a Peugeot 106, first ensure the wipers are off and in the resting position. Lift the wiper arm away from the windscreen, then locate the release tab or nut securing the wiper arm to the spindle. If it's a nut, use the appropriate socket to remove it; if it’s a tab, press it to release the arm. Finally, fit the new wiper arm onto the spindle, ensuring it's securely attached, and lower it back onto the windscreen.
You can change the wiper blades by removing the retaining clip to the wiper blade arm. The wiper blade will come off and can be replaced.
In many cars, there is only a single wiper motor. One wiper arm is attached directly to the wiper motor and the other through a linkage. If one is working, the motor is operating but the connection to the other may be broken.
Begin by removing the wiper motor wiring harness. Remove the traveling arm linkage retaining bolt. Remove the wiper motor retaining bolts. Reverse the process to install the new wiper motor.
The non working wiper on the 2001 Century most likely has a broken wiper linkage. The linkage can be checked by removing the vehicles cowling.