Gas strut replacement for rear swing gate...
I've already got the part (Tuff Support 610714) but can't find a simple set of instructions for removal and installation.

 

The gas assist struts all pretty much work the same way when they have a full cover head on each end, I have replaced a bunch over the years on boats (for engine hatch covers, ski locker lids, motor covers...).

My rear gate strut is pretty tired too.

In the pic below, lower left you can see a close up of the head. Note that there is a metal clip and the plastic head has a screw driver slot. Stick a small flat screw driver in the slot and pry up on the metal clip, you do not have to pry the clip all the way off. When you pry it back the ends of the metal clip open to allow it to slip off the mounting ball post. Install is the reverse, just force the clip back in/on all the way and it clasps the mounting ball.

 

Thanks doc but the model I purchased does not have that type of heads. The hood had them and that was quick to figure out but this one is a ball socket with NO spring clip retainers.

 

It's similar to this picture...

https://www.google.com/search?q=gas+...zmDFeZo16dQ4M:

 

Found this by the picture you posted the link to. Shows how to replace the strut you linked.
Changing a Car Gas Strut

 

Darn, I thought the rear was the same as the hood struts.

I did not go look first because I haven't been driving the 3 in this lousy weather, trying to save it from road salt this year.

 

Doc and Happy,
The rear gate strut is just like the hood strut only larger and longer

 

Thanks.

 

I knew that all along!!!!

 

All finished with the miss' h3. I now realize mine stinks...lol! I've ordered a Stabilus / Sachs Lift Support SG230109. Seems like a nice one. Ran about $27.

By the way oem 15255554 , 15864389. Cheapest with s/h was close to $45.