Timing chain repair

[Hadi Panah]

Hi, All.
I have a 95 Nissan Sentra GXE and I am looking for
specs. for the engine.  Specifically, I am looking for
an exploded view of the timing chain assembly.  I
looked in the manuals at a couple of auto parts stores
but thy are not detailed enough.  Any assistance that
can be provided would be greatly appreciated.

I am trying to determine if the tensioner was replaced
would that require removal of the valve cover and
dealing with the timing chain.

Thanks.
Hadi