Removal And Installation

CYLINDER HEAD


Removal and Installation


REMOVAL

WARNING:
- Put a "CAUTION: FLAMMABLE" sign in the workshop.
- Be sure to work in a well ventilated area and furnish workshop with a CO2 fire extinguisher.
- Do not smoke while servicing fuel system. Keep open flames and sparks away from the work area.
1. Drain engine coolant and engine oil. Removal and Replacement.
2. Remove the following components and related parts.
- Exhaust manifold; Component.
- Intake manifold; Component.
- Fuel tube and fuel injector assembly; Component Removal And Installation.
- Water inlet and thermostat. Removal and Installation .
- Water outlet; Component.
- Rocker cover; Component Removal And Installation.
- Front cover, timing chain; Component.
- Camshaft; Component Removal And Installation.





3. Remove cylinder head.
- Loosen bolts in reverse order as shown.

Arrow Indicates Engine Front

- Using TORX socket (size E18), loosen cylinder head bolts.
4. Remove cylinder head gasket.

INSPECTION AFTER REMOVAL

Cylinder Head Bolts Outer Diameter





- Cylinder head bolts are tightened by plastic zone tightening method. Whenever the size difference between "d1" and "d2" exceeds the limit, replace them with a new one.






- If reduction of outer diameter appears in a position other than "d2", use it as "d2" point.

Cylinder Head Distortion

NOTE:
When performing this inspection, cylinder block distortion should be also checked. Inspection After Disassembly.
1. Wipe off engine oil and remove water scale (like deposit), gasket, sealant, carbon, etc. with a scraper.

CAUTION:
Use utmost care not to allow gasket debris to enter passages for engine oil or water.





2. At each of several locations on bottom surface of cylinder head, measure the distortion in six directions using straightedge (A) and feeler gauge (B).





- If it exceeds the limit, replace cylinder head.

INSTALLATION
1. Install cylinder head gasket.
2. Apply new engine oil to threads and seating surface of bolts.

CAUTION:
If cylinder head bolts re-used, check their outer diameters before installation. Follow the "Cylinder
Head Bolts Outer Diameter" procedure.






Arrow Indicates Engine Front

3. Install cylinder head, follow the steps below to tighten cylinder head bolts in numerical order as shown.











CAUTION:
Check and confirm the tightening angle by using Tool (A) or protractor. Never judge by visual inspection without the tool.






4. Installation of the remaining components is in the reverse order of removal.