There is no sub-assembly or internal inspections involved in servicing of the oil pump as a whole body. First of all it is necessary to siphon off the engine oil and unscrew the oil filter. For 1.6L and 2.0L models remove the boost pressure sensor that is connected to the turbocharger, disconnect the Charge Air Cooler inlet and outlet hoses and then remove the air conditioning compressor. For 1.5L and 1.6L engines the
Timing Belt and crankshaft sprocket should be removed while for 2.0L, 2.3L and 2.5L a timing chain cover should be removed. In all models, drain the engine oil and also pull off the
Oil Pan, and the oil pick-up tube which is secured by two mounting bolts. For 1.5L and 1.6L engines, it actually removes oil pump mounting bolts and separates it from the front of the engine block; oil pump gasket has to be replaced with a new one. In the course of performing the above for 2.0L, 2.3L and 2.5L engines, you will have to use a screwdriver to pry off the end of the spring in the oil pump drive chain tensioner from under the shouldered bolt after pulling out the two bolts to remove the tensioner before finally using a screwdriver to detach the chain from the oil pump sprocket. To do this remove the sprocket bolt using a suitable tool, after this remove the oil pump drive sprocket. Following the removal of the oil pump mounting bolt, you should encourage the pump. The process of installation is exactly the opposite to that of removal, and while reassembling the engine the mechanic has to make sure that all the gaskets are replaced with new ones, lightening the oil pump mounting bolts in a correct sequence for 1.5 and 1.6 versions, and tightening the oil pump mounting bolts for 2.0 and 2.3 and 2.5 versions. After fitting the new oil pan, replace the oil filter, and add fresh oil into the crankcase, inspect the vehicle's cluster for any oil warning lights if fitted after starting and warming up the vehicle.