Section 05 ENGINE (4-TEC)
Subsection 07 (CYLINDER HEAD AND VALVES)
Then, the camshaft sprocket lines should be lined
up as shown in the following illustration.
1
R1503motr95A
1
1. Position lines
Position the rocker arm shaft with the notches on
top.
1
R1503motr91A
2
1. Rocker arm shaft
2. Rocker arm shaft notches
Install NEW rocker arm shaft screws no. 8.
Torque as per following procedure:
CAUTION: This assembly uses stretch screws.
As the screws have been stretched from the
previous installation, it is very important to use
new screws at assembly. Failure to replac
e
screws and to strictly follow the torque proce-
dure may cause screws to loosen and lead to
engine damage.
– Torque screws at firs
tto10N•m(89lbf•in)
according to follo
wing sequence.
R1503motr93A
2
1 3 4
5
6
– Torque screws to 20 N•m (177 lbf•in).
– Finish tightening screws turning an additional
90° rotation with a torque angle gauge.
1
R1503motr92A
2
1. Rocker arm shaft screw
2. Torque angle gauge
CAMSHAFT TIMING GEAR
NOTE: Although it is not necessary to position
crankshaft to TDC for disassembly, it is a good
practice to do it, as a troubleshooting step, to
know before disassembly if valve timing was ap-
propriate.
Removal
Lock crankshaft with crankshaft locking tool
(P/N 529 035 821), refer to CRANKSHAFT LOCK-
ING in ENGINE BLOCK section.
Remove:
– valve cover (refer to CHAIN TENSIONER RE-
MOVAL in ENGINE BLOCK section)
260 smr2004-Complete Line Up
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