UENR0623-02 79 Basic Engine Basic Engine i04823065 Position the Valve Mechanism Before Maintenance Procedures NOTICE Ensure that this procedure is carried out before the rocker shaft is removed. Table 9 Illustration 66 g02948536 Typical example (1) This Tool is used in the aperture for the electric starting motor. 2. Select an exhaust rocker arm (1). The exhaust rocker arm (1) can be on any cylinder. 3. Use Tooling (A) to rotate the crankshaft in the normal direction of rotation until the hydraulic lash adjuster starts to open the exhaust valve. Continue to rotate the crankshaft until the valve has opened to the maximum extent. This is the safe position. Note:
Make temporary marks on the front pulley and the front housing once the engine is in the safe position. NOTICE Ensure that the crankshaft is located in the safe position before the rocker shaft assembly is installed. Illustration 65 g01353215 Cylinder and valve location (A) Inlet valve (B) Exhaust valve i03635080 Piston Ring Groove - Inspect 1. Remove the valve mechanism cover. Refer to Disassembly and Assembly, “Valve Mechanism Cover - Remove and Install” for the correct procedure. Inspect the Piston and the Piston Rings 1. Check the piston for wear and other damage. 2. Check that the piston rings are free to move in the grooves and that the rings are not broken.
Required Tools Tool Part Number Part Description Qty A(1) 27610291 Barring Device Housing 1 27610289 Gear 1