Sentra L4-1.8L (QG18DE) (2004)
Remove front cover carefully.
Remove mounting bolts A - E shown in figure.
NOTE: Bolts C and E have been removed in step b.
CAUTION: When removing, be careful not to damage or bend front end of cylinder head gasket. Also after peeling off contact surface between front
cover and gasket, their surfaces shall be smooth. If cylinder head gasket is damaged, replace it with a new one.
Remove O-rings from front cover and cylinder block.
CAUTION: Use a scraper to completely remove all liquid gasket adhering to mounting surface. De-grease and clean mounting surfaces.
After installation, wipe off any protruding liquid gasket.
Install front cover as follows.
Install O-ring to cylinder block.
Apply a continuous bead of sealant to the positions shown in the figure between the cylinder head gasket lower surface and the cylinder block.
Use Genuine RTV Silicone Sealant, or equivalent.
Apply a continuous bead of sealant to the back surface of the front cover as shown in the figure.
Use Genuine RTV Silicone Sealant, or equivalent.
CAUTION: Do not apply sealant to groove A shown in figure.
Be especially careful of amount of sealant being applied in locations indicated with a in the figure.
Apply sealant to the top surface of front cover lightly and evenly.
Use Genuine RTV Silicone Sealant, or equivalent.
Install O-ring to back surface to front cover.