Oil Pump - Disassemble

WARNING: This page is about a different car, the 2002 Pontiac Sunfire and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

Disassemble the oil pump gerotor cover from the oil pump housing.
Remove the oil pump from the balance shaft housing.

Fig 1: Oil Pump Assembly
Courtesy of GENERAL MOTORS CORP.
Disassemble the pressure relief valve. Remove the roll pin with a punch.

Fig 2: Oil Pump Pressure Relief Valve

Courtesy of GENERAL MOTORS CORP.

Clean all of the parts in cleaning solvent. Remove varnish, sludge, and dirt.