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JR
CYLINDER HEAD COVER - LEFT (Continued)
Fig. 31 Cylinder Head Cover Gasket and Spark Plug
1 - ONE PIECE GASKET
2 - SPARK PLUG WELL SEALS
(5) Install ignition coil capacitor and fastener.
(6) Connect all electrical connectors and harness
clips.
(7) Install ground strap to cylinder head cover
stud.
(8) Install upper intake manifold (Refer to 9 -
ENGINE/MANIFOLDS/INTAKE
INSTALLATION).
(9) Connect negative battery cable.
CYLINDER HEAD COVER -
RIGHT
REMOVAL
(1) Disconnect negative battery cable.
(2) Remove upper intake manifold (Refer to 9 -
ENGINE/MANIFOLDS/INTAKE
REMOVAL).
(3) Disconnect electrical connectors from ignition
coils and capacitor. Reposition electrical harness.
(4) Remove make up air hose from cylinder head
cover grommet.
(5) Remove ground strap from cylinder head cover
stud.
(6) Disconnect electrical harness retaining clips
from cylinder head cover studs. Reposition electrical
harness.
(7) Remove fastener attaching ignition coil capaci-
tor.
(8) Remove ignition coils.
(9) Loosen all cylinder head cover fasteners (Fig.
30).
NOTE: Cylinder head cover attaching bolts are cap-
tured to the cover.
Seals
MANIFOLD
MANIFOLD
CAUTION: Make certain the double ended studs in
the center of the cylinder head cover are loose
before attempting to remove cover (Fig. 30).
(10) Remove cylinder head cover.
INSTALLATION
(1) Clean cylinder head cover and both sealing sur-
faces. Inspect and replace gaskets as necessary (Fig.
31).
(2) Install cylinder head cover and hand start all
fasteners. Verify that all double-ended studs are in
the correct locations as shown in (Fig. 30).
(3) Tighten cylinder head cover attaching bolts and
double-ended studs to 12 N·m (105 in. lbs.).
(4) Install ignition coils.
(5) Install ignition coil capacitor and fastener.
(6) Connect ground strap to cylinder head cover
stud.
(7) Connect make up air hose to cylinder head
cover grommet.
(8) Connect all electrical connectors and harness
clips.
(9) Install upper intake manifold (Refer to 9 -
ENGINE/MANIFOLDS/INTAKE
INSTALLATION).
-
INTAKE/EXHAUST VALVES &
SEATS
DESCRIPTION
The valves are made of heat resistant steel, and
have chrome plated stems to prevent scuffing (Fig.
15). The four valves per cylinder (two intake and two
exhaust) are actuated by roller rocker arms, which
pivot on stationary lash adjusters. All valves use
three bead lock keepers to retain springs and to pro-
-
mote valve rotation.
STANDARD PROCEDURE - VALVE AND VALVE
SEAT REFACING
The intake and exhaust valves have a 44.5 to 45
degree face angle. The valve seats have a 45 to 45.5
degree face angle. The valve face and valve seat
angles are shown in (Fig. 32).
VALVES
Inspect the remaining margin after the valves are
refaced. (Refer to 9 - ENGINE - SPECIFICATIONS)
VALVE SEATS
(1) When refacing valve seats, it is important that
the correct size valve guide pilot be used for reseat-
ing stones. A true and complete surface must be
obtained.
ENGINE 2.7L DOHC
MANIFOLD
9 - 175
-
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