Drum brake pad change

Ok that explains it all very well, thanks heaps

Also is it worth changing the drum brake housing at all?? The car has 95,000kms on it,

Im changings my front rotors as they have some score marks on them,
But never thought about the rear housings,

Worth it or not really?

I would decide when you take them off. Like disk rotors drums have a service limit measurement, it can sometimes be cast into them (not sure on Jimny where or what it is)
If you can't find this information go with a visual check.No scoring or deep recesses left by the shoes and you should be ok.
My preference with drums is to keep the originals. Aftermarket drums are a mixed bag in quality, mainly the inability to machine them correctly, it's the drum equivalent of warped rotors / disks. Just my experience, only swap them if you must.

 

You will probably find there is a lip or rusty material on the inside edge of the drum that makes it harder to pull the drums off. You may need to back the automatic adjuster off to allow the shoes to clear this lip. Once the drums are off I run a grinder around to remove the lip so it's not in the way when putting them back on.
The threaded holes in the drum are M8. The threads aren't particularly strong and will strip if you're heavy handed.
Also don't be tempted to pry the drums off by sticking anything in between the drum and the backing plate. The backing plate will bend and then rub on the drums. As it's double lipped it's a real pain to get it right again.
It's definitely not my favourite job to do on a Jimny!