that model is terrible. use some of the suggestions.
i think you have the tube bracing running in front.
if so then take it out first.
freon always has oil in it. so if you take freon out
then you take oil out. most items will require less than
half an oz of oil on replacement.
shops use recycling machines. these measure the oil
that is taken out with the freon. with a small repair
except for the exp valve which takes no oil i would
not add more than 1.5 oz of oil back in.

george