Mitsubishi 4G1 Service Manual page 111

(1) install the oil pump drive gear and driven gear to the front
case, lining up the timing marks. Lubricate the gears with
engine oil.
(1) Insert a Phillips screwdriver [shank diameter 8 mm (32 in.)
into the plug hole on the left side of cylinder block to block
the silent shaft, then tighten the flange bolt.
(1) Install a new oil pump cover gasket in the groove of the
front case.
When installing the gasket, direct the round side to the oil
Flat iron plate
(1) Install the oil seal into the oil pump cover, making sure that
its lip is in correct direction.
OIL PUMP DRIVEN GEAR / OIL PUMP DRIVE
INSTALLATION
FLANGE BOLT INSTALLATION
OIL PUMP COVER GASKET INSTALLATION
OIL PUMP OIL SEAL INSTALLATION
GEAR