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Home >> Mitsubishi >> 2012 >> Eclipse Spyder L4-2.4L (4G69) >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Camshaft, Lifters and Push Rods >> Camshaft >> Service and Repair

Camshaft: Service and Repair




REMOVAL AND INSTALLATION

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





















- MB990767: Front Hub and Flange Yoke Holder
- MB991999: Valve Stem Seal Installer
- MD998713: Camshaft Oil Seal Installer
- MD998719: Pin
- MD998772: Valve Spring Compressor

REMOVAL SERVICE POINTS

[[A]] CAMSHAFT SPROCKET REMOVAL





1. Hold the camshaft sprocket with special tools MB990767 and MD998719.
2. Loosen the camshaft sprocket mounting bolt and remove the camshaft sprocket.

[[B]] EXHAUST ROCKER ARM AND SHAFT ASSEMBLY/INTAKE ROCKER ARM AND SHAFT ASSEMBLY REMOVAL

CAUTION:
Never disassemble the exhaust rocker arm and shaft assembly, and intake rocker arm and shaft assembly.

[[C]] CAMSHAFT REMOVAL





1. Raise the transaxle assembly until the camshaft and transaxle mounting body side bracket do not touch it.
2. Remove the camshaft.

[[D]] VALVE SPRING RETAINER LOCKS REMOVAL

CAUTION:
When removing valve spring retainer locks, leave the piston of each 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.





Use special tool MD998772 to compress the valve spring and then remove the valve spring retainer locks.

INSTALLATION SERVICE POINTS

]]A[[ VALVE STEM SEALS INSTALLATION

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





2.
CAUTION:

- Do not re-use the valve stem seal.
- The special tool MB991999 must be used to install the valve stem seal. Improper installation could result in oil leaking past the valve guide.

Use special tool MB991999 to fill a new valve stem seal in the valve guide using the valve stem area as a guide.

]]B[[ EXHAUST VALVE SPRINGS/INTAKE VALVE SPRINGS INSTALLATION





Install the valve springs with the identification color painted end facing the rocker arm.

]]C[[ VALVE SPRING RETAINER LOCKS INSTALLATION





Use special tool MD998772 to compress the valve spring and then install the valve spring retainer lock in the same manner as removal.

]]D[[ CAMSHAFT INSTALLATION





Set the dowel pin of the camshaft in the position shown in the figure.

]]E[[ INTAKE ROCKER ARM AND SHAFT ASSEMBLY/INTAKE ROCKER ARM SHAFT CAPS INSTALLATION





1. Place the intake rocker shaft so that its dia.5.5 mm (0.22 inch) hole faces toward the cylinder head.
2. Install the intake rocker arm shaft caps.
3. Tighten the intake rocker shaft mounting bolts to the specified torque.
Tightening torque: 31± 3Nm (23± 2 ft-lb)

]]F[[ EXHAUST ROCKER ARM AND SHAFT ASSEMBLY/EXHAUST ROCKER ARM SHAFT CAPS INSTALLATION





1. Install the exhaust rocker shaft so that its notch is positioned as shown.
2. Install the exhaust rocker arm shaft caps.
3. Tighten the exhaust rocker shaft mounting bolts to the specified torque.
Tightening torque: 13± 1Nm (115± 9 in-lb)

]]G[[ CAMSHAFT OIL SEAL INSTALLATION





1. Apply engine oil to the entire inner diameter of the oil seal lip.
2. Use special tool MD998713 to press-fit the oil seal as shown.

]]H[[ CAMSHAFT SPROCKET INSTALLATION





1. Hold the camshaft sprocket with special tools MB990767 and MD998719 in the same manner as removal.
2. Tighten the camshaft sprocket mounting bolt to the specified torque.
Tightening torque: 89± 9Nm (65± 7 ft-lb)

]]I[[ CAMSHAFT POSITION SENSOR SUPPORT INSTALLATION

1. Remove old sealant from the camshaft position sensor support and cylinder head surfaces.





2. Apply sealant to the camshaft position sensor support flange in a continuous bead as shown in the illustration.
Specified sealant: 3M(TM) AAD Part No.8672, 3M(TM) AAD Part No.8679/8678 or equivalent
 NOTE:
Install the camshaft position sensor support immediately after applying sealant.

3. Install the camshaft position sensor support to the cylinder head.
4.
CAUTION:
After installing the parts, wait at least one hour. Never start the engine or let engine oil or water touch the sealant application area during that time.

Tighten the camshaft position sensor support mounting bolts to the specified torque.
Tightening torque: 14± 1Nm (120± 13 in-lb)

]]J[[ ENGINE OIL PRESSURE SWITCH INSTALLATION

1. Remove old sealant from the engine oil pressure switch and cylinder head surfaces.





2. Apply sealant to the thread of the engine oil pressure switch as shown.
Specified sealant: 3M(TM) AAD Part No.8672, 3M(TM) AAD Part No.8679/8678 or equivalent
 NOTE:
Install the engine oil pressure switch immediately after applying sealant.

3. Install the engine oil pressure switch to the cylinder head.





4.
CAUTION:
After installing the parts, wait at least one hour. Never start the engine or let engine oil or water touch the sealant application area during that time.

Tighten the engine oil pressure switch to the specified torque as shown.
Tightening torque: 10± 2Nm (89± 17 in-lb)

]]K[[ O-RING/ENGINE OIL CONTROL VALVE INSTALLATION





1.
CAUTION:

- Never re-use the O-ring.
- Before installing O-ring, wind sealing tape around the oil passages cut-out area of engine oil control valve, to prevent damage. If the O-ring is damaged, it can cause an oil leak.

Apply a small amount of engine oil to the O-ring and then install it to the engine oil control valve.
2. Assemble the engine oil control valve to the cylinder head.
3. Tighten the engine oil control valve mounting bolt to the specified torque.
Tightening torque: 11± 1Nm (98± 8 in-lb)
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