Mercury F4AZ-6701-A Oil Pan Rear Seal

When replacing the crankshaft seal on 2.0L engine make sure that the camshaft or crankshaft is locked in position especially when the timing belt is off so as to avoid causing serious damage to the engine. Start by pulling out the timing belt and followed by the crankshaft sprocket and the Woodruff key. It is advised to then remove the timing belt guide washer from the crankshaft. There should be a momentary access to the rear of the seal from below the right inner fender; the seal needs to be eased out, using a small screwed driver taped; be careful not to gouge the oil pump assembly, crank shaft or the seal bore. Polish the seal bore and crankshaft sealing surface and rectify any minor eccentricity apparent. Cover the new seal with the thin layer of the engine oil and, with the help of the hammer and an adequately sized socket, put in the new seal in with the crankshaft sprocket facing outside while the word 'FRONT' is placed facing outward. Replace the timing belt and the respective covers and start the engine to check whether there will be any oil leakage. The removal process for 2.3L and 2.5L engines mainly involves; lifting the front, and then; disconnecting the exhaust, unbolting the intercooler pipe and the crankshaft pulley followed by removing the seal without damaging the timing chain cover bore or the crank of the shaft. The other way is by using a hammer and a drill and making 8mm round holes in the seal so as to make use of self tapping screws to pull out the seal. Wipe off the sealing surfaces and apply clean engine oil to them then slip the new seal into the timing chain cover and make sure it is in the right position. It is advisable to use a seal driver or the right socket in an attempt to tighten the seal until it sits flat on the surface of the engine cover. Clean the lip of the seal and apply the engine oil to it and put back the crankshaft pulley. For camshaft oil seals, the number one piston top dead centre, remove the timing belt and for 2008 and earlier models remove the camshaft sprocket bolts and camshafts while noting the positions. Take out the old seal gently, degrease the cylinder, and, in turn, oil the new seal, and place the seal with the use of a hammer in such a way that it is perpendicular to the cylinder. Ensure that the camshafts are adjusted to TDC, then replace the sprockets and tighten the bolts followed by re-fixing the timing belt so that you can rev the engine in order to check for some leakage at the camshaft seal.