Ok since i am doing this already and haven't found alot of good write ups here it is as i do it. This is a Series 1 RB25DET. I did this cause my water pump was bent so here it is:
Remove water pump pulley:
remove the CAS too that is held on by the obvious 3 bolts too
Remove bolt that holds un main pulley (it's a 27):
Use pulley puller to take the pulley out:
Remove all small bolts the holes are circled in red (they are T5):
take off this little guard:
MARK the timeing belt in all 3 places. mark the gears and the belt so you can line them up later I labled mine Rt, LT, and B (for bottom):
Now remove the timeing belt tensioners:
and the back of the other one:
now the 12 bolts that hold on the water pump (you can see them in the pics above)
and you should be left with somehting like this, if not cleaner hopefully:
Thermostat:
un bolt the Oil dip stick and bend down slightly, Bent the metal hose CAREFULLY that is by the bottom left scew, unbolt:
install soon to come....................