ROCKER ARM PISTON OPERATION CHECK

3.Remove the oil feeder control valve. 4.Remove the taper plug.

5.Turn the crankshaft clockwise until the notch on the crankshaft pulley is lined up with the "T" mark on the timing indicator.

6.The rocker arm piston operation check can be performed on rocker arms indicated by white arrow mark when the No. 1 cylinder piston is at the top dead centre on the compression stroke, and on rocker arms indicated by black arrow mark when the No. 4 cylinder piston is at the top dead centre on the compression stroke. note If the rocker arm of No. 6 cylinder at the inlet side is moved up and down and the rocker arm is moved, No. 1 cylinder is at top dead centre on compression stroke. If the rocker arm of No. 6 cylinder at the inlet side is moved up and down and the rocker arm is not moved, No. 4 cylinder is at top dead centre on compression stroke.

7.While putting your finger over the oil passage hole located at the inside of the oil feeder control valve installation hole in order to prevent air leakage, use an air blow gun to blow compressed air to the taper plug installation hole. At that time, check that the rocker arm piston is operated. note To surely perform the check, wrap the top of the air blow gun with a vinyl tape. Prevent compressed air leakage as much as possible. The pressure of 620 kPa or more is necessary for the compressed air. 8.Turn the crankshaft clockwise until the notch on the crankshaft pulley is lined up with "T" mark on the timing indicator. 9.Confirm the rest of the rocker arm pistons under the procedure 7. 10.When the rocker arm piston does not operate, replace the rocker arm assembly. 11.Remove any sealant that be remaining on the taper plug.

12.Apply sealant to threaded portion. Specified sealant: Three bond 1212D, Three bond 1215 or equivalent caution Do not start the engine within one hour after the engine taper plug has been installed. 13.Install the taper plug and tighten to the specified torque. Tightening torque: 10 ± 2 N·m 14.Install the oil control valve. (Refer to Oil Control Valve - Removal and Installation .) 15.Install the rocker cover. 16.Install all of the ignition coils.