Installation

1. Install rocker arms.
2. Apply engine oil to journals and lobes of camshafts, then install camshafts on cylinder head. Ensure camshafts are correctly installed. Intake camshaft has a slit on rear end for driving crankshaft angle sensor. Also ensure dowel pins on sprocket ends are positioned on top.

Fig. 66 Camshaft Bearing Cap Identification Marks:

3. Install camshaft bearing caps. Bearing caps 2 through 5 are of identical shape. Check identification marks on bearing caps to determine correct location, Fig. 66, and ensure rocker arms are correctly mounted on lash adjusters and valve stem ends.

Fig. 67 Camshaft Bearing Cap Bolt Tightening Sequence:

4. Tighten camshaft bearing caps in sequence as shown, Fig. 67, in two or three stages by torquing progressively. Tighten to specification in final sequence.
5. Install guide tool No. MD998307-01, or equivalent, on camshaft, then apply oil to camshaft oil seal and insert oil seal along guide tool until it contacts cylinder head. Using installer tool No. MD998306-01, or equivalent, press oil seal into cylinder head, then remove tools.
6. Install camshaft sprockets and tighten attaching bolts to specifications.
7. Install crankshaft angle sensor as follows:
a. Position dowel pin on intake camshaft on top.

Fig. 68 Crankshaft Angle Sensor Mating Marks Alignment:

b. Align punch mark on crankshaft angle sensor housing with notch in plate as shown, Fig. 68.
c. Install crankshaft angle sensor on cylinder head. Tighten attaching nut to specifications. Ensure crankshaft angle sensor does not turn when tightening attaching nut.
8. Reverse remaining procedure to complete installation, noting the following:
a. Ensure camshaft and crankshaft timing marks are correctly aligned.
b. Tighten auto tensioner bolt, timing cover bolts and tensioner pulley bolt to specifications.
c. Tighten crankshaft pulley bolts and water pump pulley bolts to specifications.
d. Tighten engine center cover and rocker cover bolts to specifications.
e. When installing rocker cover, apply 3M sealant No. 8660, or equivalent, to semicircular packing.
f. Check and adjust ignition timing to specifications.