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Fig. 4: Oil pump assembly-3.8L engine
The oil pump, oil pressure relief valve and drive intermediate shaft are contained in the front cover assembly.
Disconnect the negative battery cable.
If necessary for access, remove the oil filter.
Remove the oil pump and filter body-to-engine front cover retaining bolts, then remove the oil pump and filter body from the engine front cover.
Inspect the oil pump body seal, oil pump and filter body, and engine front cover for distortion. Replace damaged components as necessary.
Position the oil pump and filter body on the engine front cover, then install the retaining bolts.
Tighten the four large engine front cover retaining bolts to 17-23 ft. lbs. (23-32 Nm), then tighten the remaining retaining bolts to 71-97 ft. lbs. (8-11 Nm).
If removed, install the oil filter.
Connect the negative battery cable.
Check for proper engine oil pressure immediately after starting engine. If engine oil pressure is not within specification a few seconds after starting the engine, stop the engine and determine the reason for the low oil pressure condition. Running an engine with low oil pressure may result in serious engine damage.
Start engine and check for leaks.