Volvo Penta TD520GE Workshop Manual page 27

Group 21 Disassembly, complete engine
5. The starter motor can be removed at this stage, but
it is easier to leave it on and remove it together
with the transmission cover.
6. Remove the engine speed governor. Use a Torx
socket E 10 (for electronic governors, use Allen
key 6).
7. Drain the fuel from the fuel duct in the engine by
removing the hollow screw at the front of the engine
block and the overflow valve and fuel return vent.
Remove the screw at the rear of the engine block.
Remove the fuel and oil filters using tool 999 9179.
8. Remove the cooler housing.
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