Removal and Installation

REMOVAL AND INSTALLATION









- MD998735: Valve Spring Compressor
- MB992089: Retainer Holder
- MB992085: Valve Stem Seal Pliers
- MD998737: Valve Stem Seal Installer

REMOVAL SERVICE POINTS

[[A]] RETAINER LOCK REMOVAL





CAUTION:
Be careful not to allow retainer holder C to interfere with the wall of the tappet hole and to damage it.

Use a special tool MD998735 and MB992089 to compress the valve spring and to remove the retainer lock.
NOTE:
Store removed parts such as valves and springs with tags describing cylinder No. and installed position attached for reassembly.

[[B]] VALVE STEM SEAL REMOVAL





Use special tool MB992085 to firmly pinch the base (larger external shape) of the stem seal and twist it right and left for pulling out.

INSTALLATION SERVICE POINTS

]]A[[ VALVE STEM SEAL INSTALLATION

CAUTION:

- The valve stem seal must not be reused.
- Do not damage the tappet wall during assembly.
- Be sure to use a special tool to install the valve stem seal. Poor installation causes oil loss via valve guides.
- If oil is not applied, the valve stem seal may rise to the surface after it is press fitted.





1. Apply a thin coat of engine oil to a new valve stem seal.





2. Use special tool MD998737 to press fit the valve stem seal into the valve guide with the valve stem used as a guide.

]]B[[ VALVE SPRING INSTALLATION





Install the valve spring so that the painted side faces toward the camshaft.

]]C[[ RETAINER LOCK INSTALLATION





Use a special tool MD998735 and MB992089 to compress the valve spring and to install the retainer lock.

]]D[[ CYLINDER HEAD GASKET / CYLINDER HEAD ASSEMBLY INSTALLATION





1. Completely remove the liquid gasket on the upper plane of the cylinder block and the lower plane of the cylinder head.
2.
CAUTION:
Sufficiently check that there is no residual oil on the place where degreasing is performed. If fingerprints are left, do not touch it with bare hands after the degreasing, since the oils from your fingers will harm the seal ability.

Degrease the place specified in the illustration.





3. As shown in the illustration, apply a dia.2.0 to 3.0 mm (0.08 to 0.12 inch) of sealant
(Three bond 1217G [Mitsubishi Part No.1000A923] or equivalent) to the top face of cylinder block.
4. Install the cylinder head gasket.
NOTE:
Check that the center of the liquid gasket is located toward the cylinder gasket in the position specified in the illustration.

5. As shown in the illustration, apply a dia.2.0 to 3.0 mm (0.08 to 0.12 inch) of sealant (Three bond 1217G [Mitsubishi Part No.1000A923] or equivalent) to the top face of cylinder head gasket.
6. Install the cylinder head assembly.

]]E[[ CYLINDER HEAD BOLT INSTALLATION

1. Install new cylinder head bolts and washers in the following procedure.
NOTE:
Cylinder head bolts and washers must not be reused.

2. Apply an appropriate amount of engine oil to top and bottom surfaces of washers and threaded portion of bolts.





3. Install cylinder head bolts to the cylinder head.
NOTE:
Bolts and washers are different parts for bolts on the timing chain side.





4. Tighten cylinder head bolts in several steps to the specified torque according to the assembly order shown.
Specified torque: 35± 2Nm (26± 1 ft-lb)






5. Put a paint mark on all of cylinder head bolt heads and cylinder head.
6.
CAUTION:

- When the tightening angle is smaller than the specified tightening angle, the appropriate tightening capacity cannot be secured.
- When the tightening angle is larger than the specified tightening angle, remove the bolt to start from the beginning again according to the procedure.

Tighten the cylinder head 90° according to the tightening order.
Tighten it further 90° and make sure that the paint mark on the cylinder head bolt is in a straight line with that on the cylinder head.