Question 1

What are the steps involved in the removal and installation process of the oil pump on Kia Sorento?

Accepted Answer

The first step in the towing process involves especially disconnecting the wire from the nearest terminal of battery and emptying the Oil from the engine, in addition to the elimination of oil filter. For 2006 and earlier 3.5L engines, go on and remove the timing belt and sprocket, also, remove the oil filter bracket and gasket. Subsequently, take out the upper oil pan-to-oil pump bolt, and then the oil pump-to-engine block mounting bolts to pull off the pump from the front of the engine. Then, unscrew the pump cover fasteners and, after that, the cover and the pump rotors should be taken off. The gasket scraper is extremely helpful for removing any form of sealant and the old gasket material from the contours of the pump body and the corresponding surface of the engine block should be cleaned using brake cleaner keeping the front part of the oil pan covered to avoid dropping of the debris. On all other engines, drop the lower oil pan, next to which you will have to undo the oil pump chain cover and the cover itself. Subsequently, the sprocket bolt, sprocket and chain are to be unbolted and set aside before the bolting of the oil pump are removed and the pump which normally is a modular component is then extracted. Wipe down all of the components with the solvent and look for signs of wear on the first round of inspection. On the 3.5L engines prior to 2006, inspect the sliding surface of the oil pressure relief valve and the valve spring, setting them as a pair when were worn. Adjust the feeler gauge to determine the clearance of driven rotor to body, rotor side and rotor tip. For all other engines, if the pump issues are detected, then it should be replaced with the new one. Lifting 2000 and earlier 3.5L engines: Pry out the old crankshaft seal and apply multipurpose grease or engine oil to the outer edge of the new seal; then gently tap it into place. Coat the lip of the seal with a thin layer of grease such that you can only see the contour on the outer periphery of the seal lip; place the drive or driven rotors into the pump body and tightly pack the residual cavity with white grease; place the cover and use a new gasket, or a freshly supplied RTV sealant, in accordance with direction with the screws set off in a staggered motion and tightened to the Apply some engine oil on the oil pressure relief valve and screw in the screw threads of the valve components into the pump body Wash the case gasket with brake cleaner to ensure the surface is free of oil. Place a new gasket on the oil pump case and fasten the mounting bolts in a diagonal manner to the said torque spec and replace the oil pick-up tube with a new gasket and fasten the bolts in the manner described above to the said torque spec. For all other engines use a new oil pump O-ring, torque the oil pump bolts to the specified value, change the drive chain and sprocket and then tight the sprocket bolt to the correct torque value. Lastly, the other parts should be replaced in the reverse manner they were removed, put oil to the engine, start the engine, check for leakage and pressure of oil, and the level of the engine oil.

Question 2

How to remove and reinstall the components of the oil pump on Kia Optima for V6 engine?

Accepted Answer

To uninstall these components, first, disconnect the cable from the negative terminal of the battery and then proceed to set the timing belt, remove the oil filter and the mounting bracket with the gasket, crank sprocket, the oil pressure relief, its spring and valve plunger and the oil pump case from the front of the engine. Afterwards, pull off the cover of oil pump and extract both the inner and outer gears and finally the cover of the pump rotors. Scrape off all the sealant and old gasket material and clean the surfaces to be mated using brake system cleaner. For examination, remove all the components for cleaning with solvent and look for wears and damages, more so the oil pressure relief valve sliding surface and valve spring should be changed as a set if they are damaged. Proceed to have an assessment of the amount of clearance between the respective driven rotor to the oil pump body, the rotor side of the oil pump and the rotor tip by the feeler gauge. In use, remove the old crankshaft seal using pliers or knives and slip a coat of multi-purpose grease or engine oil on to the outer part of the new seal before forcing it into position. Insert the drive and driven rotors into the pump body, spread petroleum jelly in the pump cavities and fit the new cover with its gasket or RTV sealant then tightening the screws with equal tightening pattern to a specified torque. Apply engine oil to the surfaces of the oil pressure relief valve before assembling it to the other related parts within the pump body, and before this it is required to thoroughly clean the gasket surfaces on the case using brake cleaner accompanied by a cloth. Replace the old gasket of the oil pump case and tighten all the bolts to the recommended torque, change the gasket of the oil pick-up tube and tighten all the fasteners to the required degree of tension. Fit the other remaining parts in as they are removed, pour oil, engage the engine and look out for oil leakage and oil pressure, together with retesting the engine oil quantity.

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