I am very new to this group and not terribly computer saavy at all and I find it hard to find things or questions i havre asked in the past but i am getting better

does any one know how to get the pins out that hold the chain guides I need to take the head off and this seems to be the only clitch , had turbo rebuilt and new injectors ready to go in and I noticed the coolant was down so I topped it up and shortly there after saw the coolant coming out of the exhaust manifold cyl # 3 so now i neet to find out what is wrong thanks peter