Sealer Date Code Chart - Jeep 1987 Wrangler Workshop Manual

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ENGINES
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4.2 LITER (258 CID) SIX-CYLINDER ENGINE
Sealer Date Code Chart
S E E
I.S.
N
O
T
E
S
First Character Second Character
Is Year of Is Month of
Manufacture Manufacture
K - 1980
A - January
A - 1981 B - February
B - 1982 C - March
C - 1983
D - April
D - 1984 E - May
E - 1985 F - June
F - 1986 G - July
G - 1987 H - August
H - 1988 J - September
J - 1989 K - October
K - 1990 M - November
N - December
840150
Apply a 3mm (1/8-in) diameter bead of AMC
Gasket-ln-A-Tube, or equivalent, silicone sealer
to the sealing surfaces on the cylinder head and
cylinder head cover. Allow approximately five
minutes for the sealer to set-up.
CAUTION: Avoid any time delay between the
sealer set-up and cover installation. The sealer
can become tack-free in 10 - 1 5 minutes, which
will reduce its adhesive qualities.
Install replacement seals on the cylinder head
cover attaching studs. Ensure that the studs are
clean before installing the seals.
Install the cylinder head cover on the cylinder
head as soon as the primer and sealer have
set-up. Do not allow the sealer to contact the
valve actuating or other components. Avoid
smearing the sealer.
Install and tighten the cylinder head cover nuts
with 3 N-m (28 in-lbs) torque.
NOTE: If the cover nuts are not the locking-type,
replace them with lock-nuts.
Install and tighten the cover retaining screws to
6.2 N-m (55 in-lbs) torque.
Connect the fuel pipe and the distributor vacuum
advance hose.
Reposition and/or connect all the air and
vacuum hoses that were moved for cover
removal clearance.
Connect the PCV valve and the P C V shutoff
valve hose.
Install the air cleaner and hoses.
Connect the battery negative cable.
Check the engine oil and add if necessary.
NOTE: It is recommended that the sealer be
allowed to cure for approximately one to two
hours before starting the engine.
¥ A L ¥ E S A i i ACTUATING COMPONENTS
Rocker Arm Assembly Removal
Remove the cylinder head cover. Refer to
C y l i n d e r H e a d C o v e r R e m o v a l for the
procedure.
Remove the two capscrews (1) at each bridge
(2) and pivot (3) assembly. Alternately loosen
the capscrews, one turn at a time, to avoid
damaging the bridges.
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