Start the replacement process by taking out the valve Rocker Arm cover before positioning valve rocker arms and pushrods and pivot support support on a rack for correct placement. Remove the valve Rocker Arm bolts as well as the valve rocker arms following by the valve Rocker Arm pivot support and pushrods. The valve Rocker Arm and pushrod inspection should include cleaning followed by examination. Engine oil application to both valve rocker arms and pushrods serves as lubrication before installation. Likewise, the valve Rocker Arm bolt flanges need lubrication. The valve Rocker Arm pivot support can now be installed with pushrod alignment to valve lifter sockets then add pushed rods carefully into Rocker Arm ends before tightening the bolt at this time. Start by installing the rocker arms and bolts first and proceed to turn the Crankshaft until the number one piston reaches top dead center compression stroke positioning while rockers are off lift and the Crankshaft sprocket key rests at 1:30. Engine position number one demands bolt torque of 30 nm (22 ft. Lbs.) for the exhaust Rocker Arm set of cylinders 1, 2, 7, 8 while requiring the intake set of 1, 3, 4, 5 to also receive 30 nm (22 ft. Lbs.). Turn the Crankshaft by 360 degrees before adjusting the exhaust Rocker Arm bolts for cylinders 3, 4, 5, 6 to torque at 30 nm (22 ft. Lbs.) followed by the intake bolts for cylinders 2, 6, 7, 8 where torque is set to 30 nm (22 ft. Lbs.). As the last step install the valve Rocker Arm cover.