The procedure of replacing or removing the camshaft should take place in areas with no flames or smoking because flammable mixtures possess ignition risks. Engine repairs should remain clean to prevent failed operations from foreign elements. Maintenance of the crankshaft requires free wheeling with the dowel pin set at 9 o'clock until valve clearance tests complete and both camshafts achieve installation. Turn the crankshaft to the 9 o'clock direction in a counterclockwise movement. Cleaning engine oil should cover the camshafts before installing them onto the LH and RH cylinder heads when they are positioned in the neutral position. Installation of the numbered cylinder head camshaft bearing caps requires tightness of 10 Nm (89 lb-in) for all 16 bolts distributed in a specific installation sequence. When installing fresh components the engine valve clearance needs verification by using a feeler gauge before installing new valve tappets of suitable sizes. Install the Camshaft Holding Tool at LH camshaft TDC position followed by assembling the VCT assembly with exhaust camshaft sprocket and secondary timing chain where colored links face the timing marks. Begin by applying torque to 40 Nm (30 lb-ft) then perform one complete bolt looseness and escalate torque to 10 Nm (89 lb-in) before finishing with a 90-degree bolt tightening period. The second step requires following the same installation process for the RH camshafts. Both installed camshafts need to be followed by rotating the crankshaft to 60-degree clockwise TDC position where you should place the primary timing chain with properly oriented colored links before adding the lower LH primary timing chain guide with tensioner arm that requires 10 Nm (89 lb-in) of torque. Install the primary timing chain tensioner by resetting it before positioning all timing marks correctly into place. The installation requires three bolts for each VCT housing which must be torqued to 10 Nm (89 lb-in) after ensuring that dowels completely enter the cylinder head space. The installation process requires Motorcraft High Performance Engine RTV Silicone on both engine front cover sealing surfaces and
Oil Pan-to-cylinder block joint before front cover and bolt installation with 3 Nm (27 lb-in) torque setting. Begin engine front cover bracket installation by tightening specific bolts to 10 Nm (89 lb-in) then proceed to 24 Nm (18 lb-ft) for those bolts. New thread sealer must be applied to engine mount stud holes before mounting the engine studs with a torque of 20 Nm (177 lb-in). Attach the engine mount bracket and its bolts with a torque setting of 30 Nm to 22 lb-ft. The installation requires a new crankshaft front seal with tightening of the crankshaft pulley bolt across four stages. The accessory drive belt tensioner along with
Power Steering Pump require installation plus any needed replacements of seals. The repair of the engine front cover-to-cylinder head joints requires RTV Silicone then the RH and LH valve covers should be fitted with new gaskets and secured with 10 Nm (89 lb-in) torque. Complete the installation of coil-on-plug assemblies which also includes wiring harness retainers and electrical connectors for the camshaft VCT solenoids with other necessary components. New to the installation process is the application of RTV Silicone at the front cover-to-cylinder head joints immediately before installing the upper
Intake Manifold and support bracket bolt. Tighten this bolt to 10 Nm (89 lb-in).