BMW 11417501568 Oil Pump

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Begin by disconnecting the negative battery cable. Then, remove the oil pan to expose the oil pump. Next, remove the oil pump mounting bolts and lower the oil pump and driveshaft. To install, inspect and replace the oil pump driveshaft bearing if necessary, and then install the gear and cover.

The M54 engine oil pump is driven by the crankshaft via a chain and sprocket assembly. To remove the oil pump, the front suspension must be lowered while supporting the engine from above. The oil sump should be removed first, followed by the oil pump sprocket mounting nut. It is important to note that the sprocket nut has left-hand threads, so it should be turned clockwise to loosen. The sprocket should then be lifted off the pump along with the drive chain. The oil pump can be unbolted from the engine block, and the oil pump pick-up tube bolts should be removed before taking out the pump. The mounting bolts can be removed, and the pump can be withdrawn. It is crucial to record the location of any spacers between the pump and engine block. The oil pump shaft should be spun to check if the gears turn smoothly, and if they do not, the pump should be replaced. The oil pressure relief valve should also be inspected. During installation, it is important to inspect the pump locating dowels for damage and correct positioning. The oil pick-up and return tube sealing O-rings should be replaced, and the sprocket splines should be aligned with the oil pump shaft splines before tightening the sprocket nut. Finally, the engine should be filled with oil, run, and checked for leaks.