
Remove the pressure relief plug-(1),spring-(2), and plunger-(3).

Remove the oil pump gerotor cover-(1) andbolts.Clean all of the parts in cleaning solvent. Remove varnish,sludge and dirt.Inspect the oil pump-(2, 3) for wear and scoring.Ensure that all components are within specifications. Refer toEngine Mechanical Specifications.
Replace the front cover-(4) and oil pump assemblyif it is out of specification or damaged.
Oil Pump Removal Engine Lubrication Oil Pump
Primary Camshaft Intermediate Drive Chain Removal Valvetrain CamshaftLow and Reverse and 1-2-3-4 Clutch Housing, and 1-2-3-4 Clutch Plate Installation (6T40/45/50) Automatic Transmission Unit Automatic Clutches
Low and Reverse and 1-2-3-4 Clutch Housing, and 1-2-3-4 Clutch Plate InstallationCalloutComponent Name1Low and Reverse and 1–2–3–4 Clutch HousingNote:The longer legs face the bottom of the case and the oil passages face the valve bodyend of the case.2Output Sun Gear Assembly31–2–3–4 Clut ...