Remove the lower oil pan. (Refer to Lubrication System - "Oil pan")
Remove the oil pump chain cover (A).
Tightening torque :
9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)
Remove the oil pump chain sprocket (A).
Tightening torque :
18.6 ~ 21.6 N.m (1.9 ~ 2.2 kgf.m, 13.7 ~ 15.9 lb-ft)
Remove the oil pump (A).
Tightening torque :
20.6 ~ 22.6 N.m (2.1 ~ 2.3 kgf.m, 15.2 ~ 16.6 lb-ft)
When installing, use a new O-ring (B).
After assembly, wait at least 30 minutes before filling the engine with oil.
(Refer to Lubrication System - "Engine Oil")
Install in the reverse order of removal.