Yanmar 3JH4E Service Manual page 94

4. Disassembly and Reassembly
(22) Turning the engine over
1) Place a wood block of appropriate size on the floor,
and stand up the engine on the flywheel housing.
2) Remove the engine mounting feet.
(23) Removing the crankshaft V-pulley
Loosen the bolt tightening the crankshaft V-pulley and
remove the crankshaft V-pulley with an extraction tool.
(24) Removing the oil pan
Remove the oil pan and spacer..
(25) Removing the lube oil inlet pipe
Remove the lube oil inlet pipe and gasket.
(26) Removing the gear case
Loosen the gear case bolts, and remove the gear case
from the gear case flange.
(27) Removing the lube oil pump
Remove the lube oil pump from the gear case.
Gear case
Lube oil pump cover
Outer rotor
Inner rotor
Pressure
control valve
(Lube oil pump)
78
Bolt
Washer
Crankshaft V-pully
Oil pan
Wood block
Flywheel housing
Gear case flange
Gasket Bolt
Cylinder
block
Lube oil inlet pipe
Gear case
Oil seal