Mitsubishi 4G1 Service Manual page 211

Service tool :
Engine with silent shafts
Engine with sile
Engine without silent shafts
REMOVAL SERVICE POINTS
OIL PAN REMOVAL
(1) Remove the all oil pan bolts.
(2) Drive in the service tool between the cylinder block and oil
pan.
NOTE
Never use a screwdriver or chisel, instead of the service
tool, as a deformed oil pan flange will result in oil leakage.
FLANGE NUT REMOVAL
(ENGINE WITH SILENT SHAFTS)
(2) Insert a Phillips screwdriver [shank diameter 8 mm (.32 in.)]
into the plug hole to lock the silent shaft.
(3) Loosen the oil pump sprocket flange nut.
(1) If the plug is too tight, hit the plug head with a hammer two
to three times, and the plug will be easily loosened.
FLANGE BOLT REMOVAL
(ENGINE WITH SILENT SHAFTS)
(2) Loosen the flange bolt.
FLANGE NUT REMOVAL
I
(ENGINE WITHOUT SILENT SHAFTS)
(1) Clamp the oil pump shaft end in a vise.