Cylinder Head Cover Installation - Jeep 1987 Wrangler Workshop Manual

ENGINES
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4.2 LITER (258 CID) SIX-CYLINDER ENGINE
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Remove the P C V valve from the cylinder head
cover grommet and disconnect the PCV shut-off
valve vacuum hose.
R e m o v e the v a c u u m switch and bracket
assembly from the cylinder head cover.
Remove all the necessary vacuum and air
hoses to provide clearance for the cylinder head
cover removal/installation.
NOTE: Identify and tag the hoses for installation
reference.
Remove the cylinder head cover retaining nuts.
Detach the cover from the cylinder head by
breaking the silicone rubber seal with a putty
knife or razor blade. Do not attempt to pry the
cover up until the seal has been completely
broken.
Rotate the cylinder head cover toward the
passenger side and remove the cover.
CYLINDER HEAD COVER INSTALLATION
Remove the original sealer from the cover
flange sealing surface and inspect the cover.
Replace the cover if it is cracked or damaged in
any way.
If a replacement cover is installed, transfer the
PCV valve grommet and oil filler cap from the
original cover to the replacement cover.
Remove any original sealer from the cover
sealing surface of the cylinder head and clean
the surface using AMC Fabric Cleaner, or
equivalent.
Remove all residue from the sealing surface
using a clean, dry cloth.
Apply General Electric SS 4004 primer, or
equivalent, to the cover sealing surface on the
cylinder head. Allow 10 - 15 minutes for the
primer to set-up.
C A U T I O N : The following step involves the
application of AMC Gasket-ln-A-Tube silicone
sealer. For an effective seal, it is required that
the sealer be no more than 12 months old at the
time of use. Before using the sealer, check the
date code stamped on the crimped seam at the
tube bottom or on the sealer carton. The two
character letter code can be deciphered using
the Sealer Date Code Chart.