Leonardl , thank you for the comments as well as the tip about the brass plug ! point well taken and it will be fix asap, very good point I did not think of those obstacles than could damaged the plug .
here are some more pics of the work I did last evening .
cleaned the alternator.
fix the lower radiator holder.
finished the cleaning of the front and right side of the motor
check of the temp. sensor .
fixed of the radiator top side holder from rivets to bolt
I undid the hydraulic oil pump as well .
cleaning of the alternator




fixed of the radiator top side holder from rivet to bolt


fix the lower radiator holder


check of the temp sensor conductivity
meter in DIODE test mode to hear the BEEEP of continuity

check of the temp. sensor at room temp
meter on OHM mode

check of the temp. sensor at slightly heated temp

the famous gauge which I think it is not accurate at all but need to verify

undoing the hydraulic pump
