Important:There are no serviceable components within the oil pump.Disassemble the pump only to diagnose an oiling concern. Adisassembled oil pump must not be reused. A disassembled oil pumpmust be replaced.
Remove the oil pump mounting bolts.Remove the primary camshaft drive chain lower guidebolts.Remove the primary camshaft drive chain lower guide.
Remove the bolts holding the oil pump cover to the oil pumphousing.
Remove the oil pump cover from the oil pump housing.
Remove the inner oil pump drive gear.Remove the outer oil pump driven gear.
Remove the clip, holding the cap, for the oil relief valvecomponents.Remove the cap, spring, and plunger from the oil pumphousing.
Pinion Flange Runout Measurement
Special ToolsGE-8001Dial Indicator Set, or equivalentJ-23409Dial Indicator Extension, or equivalentJ-35819Flange Runout GaugeFor equivalent regional tools, refer toSpecial Tools and Equipment.Note:This measurement procedure is intended to measure drive axlepinion flanges with 1-piece U-joint yokes o ...