1300wipass

Hi

This is abit of a newbie question, but could someone please label the numbers idicated on the picture of my TD04L .... i have it at different angles but all the numbers are for the same pipes .. I would like to know what are the oil in and oil out pipes and also what the water inlet and outlet pipes are ... many thanks guyz .. and gr8 site!!! ,,, ......

PLEASE LABEL 1 - 4 THANKS!!! .. see pics below

coulty

1 - Water return
2 - Water feed
3 - Oil return
4 - Oil feed