Removal and Installation

CYLINDER HEAD

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.
^ Before removing camshaft and idler sprockets, apply paint marks to them for retiming.

Removal
1. Remove upper timing chain and idler sprocket.
^ For retiming during cylinder head removal/installation, apply paint marks to camshaft sprockets, upper timing chain, lower timing chain and idler sprocket.





2. Remove camshaft brackets and camshafts.
^ Mark these parts original positions for reassembly.





3. Remove cylinder head bolts in numerical order.
^ Removing bolts in incorrect order could result in a warped or cracked cylinder head.
^ Loosen cylinder head bolts in two or three steps.
4. Remove cylinder head and cylinder head gasket.

Installation
1. Tighten cylinder head bolts in numerical order using the following procedure:








a. Tighten all bolts to 29 Nm (3.0 kg-m, 22 ft. lbs.).
b. Tighten all bolts to 79 Nm (8.1 kg-m, 59 ft. lbs.).
c. Loosen all bolts completely.
d. Tighten all bolts to 25 to 34 Nm (2.5 to 3.5 kg-m, 18 to 25 ft. lbs.).
e. Turn all bolts 86 to 91 degrees clockwise. If angle wrench is not available, mark all cylinder head bolts on the side facing engine front. Then, turn each cylinder head bolt 86 to 91 degrees clockwise.





2. Install camshafts and camshaft brackets in the order shown using the following procedure.
a. Set camshafts and camshaft brackets.
b. Tighten all bolts to 2 Nm (0.2 kg-m, 17 inch lbs.).
c. Tighten all bolts to 9.0 to 11.8 Nm (0.92 to 1.2 kg-m, 79.9 to 104.2 inch lbs.).
^ Apply new engine oil to bolt threads and seat surfaces.
3. Install upper timing chain and idler sprocket.