Yes it has one!
The pictures below show the steps I went though to change the valve stem oil seal's myself.
The whole job took 2 and a half days to do, I was lucky that all bolts came undone ok even the exhaust nuts and bolts!
I can see why Toyota want a large amount of money to do this as it was bloody time consuming cleaning the head, blook and valves!
Cleaned up cylinder head, Pistons, engine block, and ground the valves, I also took off the alternator, cleaned and greased it all up as it was noisey.
Changed head gasget, and re-assembled with old head bolts as they were all ok.
It even started fine and did not leak oil everywhere from the cam cover!
© John Mears 2005