Mitsubishi Outlander manuals

Mitsubishi Outlander: Valve Stem Seal

REMOVAL AND INSTALLATION

CAUTION

*Remove and assemble the marked parts in each cylinder unit.

Pre-removal operation

Post-installation operation

Mitsubishi Outlander. Engine Mechanical

Removal steps

  1. Front camshaft bearing cap assembly
  2. Camshaft bearing
  3. Camshaft bearing oil feeding cap (exhaust side)
  4. Camshaft bearing cap (exhaust side)
  5. Camshaft bearing cap (exhaust side)
  6. Camshaft bearing thrust cap (exhaust side)
  7. Camshaft and camshaft sprocket assembly (exhaust side)
  8. Camshaft bearing
  9. Camshaft bearing oil feeding cap (intake side)
  10. Camshaft bearing cap (intake side)
  11. Camshaft bearing cap (intake side)
  12. Camshaft bearing oil feeding cap (intake side)
  13. Camshaft and camshaft sprocket assembly (intake side)
  14. Spark plug
  15. Valve tappet
  16. Valve spring retainer lock
  17. Valve spring retainer
  18. Valve spring
  19. Valve stem seal

Required Special Tools:

REMOVAL SERVICE POINTS

FRONT CAMSHAFT BEARING CAP ASSEMBLY REMOVAL

1. Temporarily install the engine oil pan which was removed at the valve timing chain removal.

CAUTION

When supporting the engine and transaxle assembly with a garage jack, be careful not to deform the engine oil pan.

2. Place a garage jack against the engine oil pan with a piece of wood in between to support the engine and transaxle assembly.

3. Remove special tool engine hanger (MB991928 or MB991895) which was installed for supporting the engine and transaxle assembly when the valve timing chain was removed.

Mitsubishi Outlander. Engine Mechanical

Mitsubishi Outlander. Engine Mechanical

CAUTION

Be careful not to drop the camshaft bearing.

4. Loosen the mounting bolts of front camshaft bearing cap in the order of number shown in the figure, and remove the front camshaft bearing cap assembly.

CAMSHAFT BEARING OIL FEEDING CAP/CAMSHAFT BEARING CAP/CAMSHAFT BEARING THRUST CAP REMOVAL

CAUTION

When the camshaft bearing cap mounting bolts are loosened at once, the mounting bolts jump out by the spring force and the threads are damaged. Always loosen the mounting bolts in four or five steps.

Loosen the mounting bolts of the camshaft bearing caps in the order of number shown in the figure in four or five steps, and remove the camshaft bearing caps.

Mitsubishi Outlander. Engine Mechanical

Mitsubishi Outlander. Engine Mechanical

VALVE TAPPET REMOVAL

CAUTION

Remove all of the valve tappets by hand.

Mitsubishi Outlander. Engine Mechanical

VALVE SPRING RETAINER LOCK REMOVAL

1. Screw in special tool MB992090 to special tool MD998772 and assemble special tool MB992089.

CAUTION

When removing the valve spring retainer lock, leave the piston of the cylinder in the TDC (Top Dead Center) position.

The valve may fall into the cylinder if the piston is not properly in the TDC position.

2. Install special tool MD998772 (with special tools MB992090 and MB992089 attached) to the cylinder head and compress the valve spring. Then, remove the valve spring retainer lock.

Mitsubishi Outlander. Engine Mechanical

VALVE STEM SEAL REMOVAL

Use special tool MB992085 to grip the base of the valve stem seal (where the outside diameter is larger) securely, and remove it by twisting it to the left and right.

Mitsubishi Outlander. Engine Mechanical

INSTALLATION SERVICE POINTS

VALVE STEM SEAL INSTALLATION

CAUTION

1. Apply a small amount of engine oil to the press-fit part and lip part of the new valve stem seal.

Mitsubishi Outlander. Engine Mechanical

2. Use special tool MD998737 to press-fit a new valve stem seal in the valve guide using the valve stem area as a guide.

Mitsubishi Outlander. Engine Mechanical

VALVE SPRING RETAINER LOCK INSTALLATION

In the same manner as removal, use special tool MD998772 with special tool MB992090 and special tool MB992089 attached to compress the valve spring, and install the valve spring retainer lock.

Mitsubishi Outlander. Engine Mechanical

VALVE TAPPET INSTALLATION

1. Apply a small amount of engine oil to the valve tappets.

CAUTION

Be sure to install the valve tappets in the same position as before.

2. Install the valve tappet to the cylinder head.

Mitsubishi Outlander. Engine Mechanical

CAMSHAFT BEARING THRUST CAP/CAMSHAFT BEARING CAP/CAMSHAFT BEARING OIL FEEDING CAP INSTALLATION

1. Install the camshaft bearing caps to the cylinder heads.

NOTE: Because the camshaft bearing thrust cap and camshaft bearing cap are the same in shape, check the cap number and additionally its symbol to identify the intake and exhaust sides for correct installation.

2. Tighten each camshaft bearing cap to the specified torque in the order of number shown in the figure in two or three steps.

Tightening torque: 12 +- 1 N*m (107 +- 8 in-lb)

Mitsubishi Outlander. Engine Mechanical

CAMSHAFT BEARING/CAMSHAFT AND CAMSHAFT SPROCKET ASSEMBLY (EXHAUST SIDE) INSTALLATION

CAUTION

When replacing the camshaft bearing, according to the identification mark of front camshaft bearing cap in the table below, select a camshaft bearing with the corresponding size. Note that the identification mark of camshaft bearing is stamped on the place shown in the figure.

Mitsubishi Outlander. Engine Mechanical

Mitsubishi Outlander. Engine Mechanical

Mitsubishi Outlander. Engine Mechanical

FRONT CAMSHAFT BEARING CAP ASSEMBLY INSTALLATION

CAUTION

When the mounting bolts are tightened with the front camshaft bearing cap tilted, the front camshaft bearing cap is damaged. Install the front camshaft bearing cap properly to the cylinder head and camshaft.

1. Install the front camshaft bearing cap to the cylinder head, and temporarily tighten the front camshaft bearing cap to the specified torque in the order of the figure (1).

Tightening torque: 17 +- 3 N*m (13 +- 2 ft-lb)

2. Tighten the front camshaft bearing cap again to the specified torque in the order of the figure (2).

Tightening torque: 30 +- 2 N*m (22 +- 1 ft-lb)

Mitsubishi Outlander. Engine Mechanical

3. Install special tool engine hanger (MB991928 or MB991895) which was installed for supporting the engine and transaxle assembly when the valve timing chain was removed.

4. Remove the garage jack which supports the engine and transaxle assembly.

5. Remove the engine oil pan installed temporarily.

Mitsubishi Outlander. Engine Mechanical

Mitsubishi Outlander. Engine Mechanical

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