89
Reassembly
32 690 03 Rev. N KohlerEngines.com
Install Valve Covers
Plastic valve covers contain integral bolt hole spacers
molded in place. Sealing of plastic valve covers is
accomplished using a yellow colored O-ring. In stamped
steel valve covers sealing is accomplished using RTV
sealant.
Plastic Valve Covers
Plastic Valve Cover Torque Sequence
1&5
3
2
4
1. Make sure sealing surfaces of valve covers and
cylinder heads are clean and free of any nicks or
burrs.
2. Install a new O-ring in groove of each cover. Do Not
use gaskets or RTV sealant.
3. Position covers on cylinder heads. If a pulse style
fuel pump is used, valve cover with pulse tting hole
must be installed on side 2. Install screws in each
cover and nger tighten.
4. Using sequence shown, torque valve cover screws
to the appropriate torque for style of screw.
Hex Flange to 9.0 N·m (80 in. lb.)
Pan Head to 6.2 N·m (55 in. lb.)
Stamped Steel Valve Covers
Stamped Steel Valve Cover RTV Sealant
A
A RTV Sealant
Stamped Steel Valve Cover Torque Sequence
1&5
3
2
4
NOTE: Always use fresh sealant. Using outdated
sealant can result in leakage. Refer to Tools and
Aids for information on sealant dispenser.
NOTE: To ensure proper adhesion of sealant to both
sealing surfaces, perform step 3 immediately (5
minutes maximum) after application of RTV.
RTV silicone sealant is used as a gasket between valve
cover and cylinder head. Refer to Tools and Aids for a
listing of approved sealants.
1. Prepare sealing surfaces of cylinder heads and
valve covers. Flatness of sealing surface must be
checked prior to reinstallation. See Disassembly.
2. Apply a 1.5 mm (1/16 in.) bead of sealant to valve
cover as shown.
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