Camshaft and camshaft oil seal (Mitsubishi Space Star)

Fig. 3.19. Camshaft and camshaft seal: 1 - PCV hose; 2 - accelerator cable mounting clamps; 3 - cylinder head cover; 4 - camshaft pulley; 5 - camshaft oil seal; 6 - rocker arm axle assembly with rocker arms; 7 - camshaft

Removal

• Disconnect the cable from the negative battery terminal.
• Remove the air filter.
• Remove the ignition distributor.
• Remove the timing belt of the gas distribution mechanism drive.
• Disconnect the PCV hose from the fitting on the cylinder head cover.
• Remove the bolts and clamps holding the accelerator cable.
• Remove the bolts and remove the cylinder head cover.
• Using special tools MB990767 and MD998719 or MD998754, block the camshaft pulley from turning and unscrew the pulley mounting bolt (Fig. 3.20). Remove the pulley from the camshaft.
• Using a knife or a flat-head screwdriver, make a groove near the working edge of the seal.

Fig. 3.20 Using special tools to block the camshaft pulley from turning

Warning: Be careful not to damage the camshaft and cylinder head.

• Insert a flat-head screwdriver blade wrapped in cloth into the punched groove and, using the screwdriver as a lever, remove the seal.
• Loosen and then remove the intake valve rocker arm shaft mounting bolt, then remove the entire assembly together with the bolt, which should remain with the assembly.
• Loosen and then remove the exhaust rocker shaft mounting bolt, then remove the entire assembly together with the bolt, which should remain with the assembly.

Warning. Do not disassemble the rocker shaft assembly.

• Evenly and gradually unscrew the camshaft cover mounting bolts, remove the covers and the camshaft.

Installation

• Installation is carried out in the reverse order of removal, taking into account the following.
• Lubricate the camshaft washers and cams with engine oil.
• Install the camshaft into the cylinder head.
• Lubricate the working edge of the camshaft oil seal with engine oil.
• Using a special tool, press in the camshaft oil seal (Fig. 3.21).

Fig. 3.21. Using a special tool to press in the camshaft oil seal

• Install the camshaft pulley and secure it with the bolt, tightening it to the required torque.
• Using special tools MB990767 and MD998719 or MD998713, lock the camshaft pulley from turning and tighten the pulley mounting bolt to a torque of 88 N·m (see Fig. 3.20).
• Check and, if necessary, adjust the valve clearances.
• Install and bolt the cylinder head cover.
• Install the timing belt to drive the gas distribution mechanism.
• Install the air filter.
• Connect the cable to the negative terminal of the battery.