Without a spring, the lock would never unlock. Therefore, a lock of a door required a spring.
A valve spring "keeper" or AKA a valve spring "retainer" is used to lock a valve spring to the valve.
To take the lock plate off requires a lock plate spring compressor. With the spring compressor in place and the spring slightly compressed remove the circlip that holds the lock plate on. Then release the spring compressor and the lock plate simply slides off.
The Spring Lock - 1912 was released on: USA: 7 September 1912
This spring broke inside the driver's door keyless entry pad door lock on my 2001 Ford Explorer Sport. Where do you connect this spring on the door lock?
You enter the correct combination for the lock then move the catch and the lock will spring open.
That is correct if the spring is upside down it will not lock back. The big end of the spring goes toward the cap.
Use a spring compressor to push the lock plate down slightly, then remove the circlip that keeps the plate on. Release the spring compressor and the lock plate will come off. Reverse the procedure to reinstall.
In a Yale lock, the spring is typically located within the cylinder assembly. It is responsible for pushing the pins back into their resting position after the key has been removed, ensuring that the lock can be engaged or disengaged properly. The springs work in conjunction with the pins to secure the locking mechanism, allowing the lock to function effectively.
Push the spring and pull the cylinder out
To replace the steering lock plate pin spring on a 1991 Chevy Suburban, first, ensure the vehicle is in a safe position and disconnect the battery. Remove the steering wheel by loosening the retaining nut and using a steering wheel puller. Once the wheel is off, take out the lock plate by removing the retaining clip and pressing down on the plate to access the pin spring. Replace the old spring with a new one, reassemble the lock plate and steering wheel, and reconnect the battery.
The lock on a muzzle loader consisted of sear, hammer and hammer spring. With some modern guns (a Winchester 94) the hammer/ hammer spring would be a close match. For a striker fired weapon (no outside hammer) it might be the firing pin and spring.