Assembly

Components

CAUTION:
^ When installing camshafts, chain tensioners, oil seals, or other sliding parts, lubricate contacting surfaces with new engine oil.
^ Apply new engine oil to threads and seat surfaces when installing cylinder head, camshaft sprocket, crankshaft pulley, and camshaft bracket.
^ Attach tags to valve lifters so as not to mix them up.

Assembly





1. Install spark plug tube.
^ Press-fit spark plug tube following procedure below.
a. Remove old liquid gasket adhering to cylinder-head mounting hole.
b. Apply liquid gasket to area within approximately 12 mm (0.47 inch) from edge of spark plug tube press-fit side.
^ Use Genuine Liquid Gasket or equivalent.

c. Using a drift, press-fit spark plug tube so that its height "H" is as specified in the figure.
Standard press-fit height "H": 38.55 - 38.65 mm (1.5177 - 1.5217 inch)

CAUTION:
^ When press-fitting, take care not to deform spark plug tube.
^ After press-fitting, wipe off liquid gasket protruding onto cylinder-head upper face.

2. Install spark plug.

Fig. 74 Installing Valve Springs. 1992-93 Maxima:

3. Install valve component parts.
^ Always use new valve oil seal.
^ Before installing valve oil seal, install valve spring seat.
^ Install valve spring (uneven pitch type) with its narrow pitch side toward cylinder head side (paint mark).
^ After installing valve component parts, tap valve stem tip with plastic hammer to assure a proper fit.