Engine Service Manual

79
Reassembly
32 690 03 Rev. I KohlerEngines.com
NOTE: Make sure engine is assembled using all
specifi ed torque values, tightening sequences,
and clearances. Failure to observe specifi cations
could cause severe engine wear or damage.
Always use new gaskets.
Make sure all traces of any cleaner are removed before
engine is assembled and placed into operation. Even
small amounts of these cleaners can quickly break down
lubricating properties of engine oil.
Check oil pan, crankcase, cylinder heads, and valve
covers to be certain all old sealing material has been
removed. Use gasket remover, lacquer thinner, or paint
remover to remove any remaining traces. Clean surfaces
with isopropyl alcohol, acetone, lacquer thinner, or
electrical contact cleaner.
Connecting Rods/Piston/Breather Components
G
I
F
A
B
D
B
E
J
H
C
A Piston Ring Set B Piston Pin Retainer
C Piston D Piston Pin
E Connecting Rod F
Connecting Rod
End Cap
G Breather Filter H
Breather
Cover
I Oil Seal J Breather Hose
Install Flywheel End Oil Seal
1. Make sure seal bore of crankcase is clean and free
of any nicks or burrs.
2. Apply a light coat of engine oil to outside diameter of
oil seal.
3. Install oil seal into crankcase using a seal driver.
Make sure oil seal is installed straight and true in
bore and tool bottoms against crankcase.
Install Breather Filter and Breather Cover
Fastener Torque Sequence and Sealant
42
1&5
3
A
A Sealant Bead
NOTE: Always use fresh sealant. Using outdated
sealant can result in leakage. Refer to Tools and
Aids for a listing of approved sealants.
NOTE: To ensure proper adhesion of sealant to both
sealing surfaces, perform step 4 immediately (5
minutes maximum) after application of RTV.
NOTE: RTV sealant should be allowed to cure a
minimum of 1 hour before engine is started.
1. Install breather fi lter between 2 ribs inside breather
chamber.
2. Make sure sealing surfaces are clean and free of
nicks or damage.
3. Apply a 1.5 mm (1/16 in.) bead of RTV sealant to
sealing surface of breather cover. See sealant
pattern.
4. Immediately install cover onto crankcase. Do not
allow RTV sealant to come into contact with any
other components.
5. Secure breather cover with M5 screws. Torque
screws in sequence shown to 6.2 N·m (55 in. lb.)
into a new, cored hole, or 4.0 N·m (35 in. lb.) into a
used hole.
6. Attach breather hose if disconnected earlier.