Importing a Rigged Piston Animation

link textHi
I’ve created a little piston animation in Maya, there’s a crank shaft with some locators which are parented, these each piston is constrained to a section of the crank shaft causing it to rotate. Animation in maya works perfectly. However, i’ve been looking for hours and im clueless as to how I import this into unreal, I’ve tried to bake out the animation and everything but nada. It comes up with a 0 bind something or other, the model imports fine but there is just no animation. I’m pretty new to the whole importing animations into ue4 but I know my way around both packages and have exhausted my knowledge. I’ll attach the maya file. Any replies will help alot

I’ve solved the issue, All i needed was to group all the elements of the model together, they worked seperately but when group it created the one animation file