79
Reassembly
24 690 31 Rev. D
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. Apply a small amount
of oil to threads of critical fasteners before
assembly, unless a Sealant or Loctite
®
is
specifi ed or preapplied.
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, and cylinder heads to be
certain that 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.
Install Flywheel End Oil Seal
Oil Seal Detail
B
A
A
4.5 mm (0.177 in.)
B
Oil Seal
1. Make sure that 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. Drive oil seal into crankcase using a seal driver.
Make sure oil seal is installed straight and true in
bore to depth shown.
Install Crankshaft
1. Lubricate crankshaft journals and connecting rod
bearing surfaces with engine oil.
2. Carefully slide fl ywheel end of crankshaft through
main bearing in crankcase.
Crankcase Components
C
D
E
B
F
G
P
I
J
K
L
M
N
O
Q
R
A
H
Y
S
T
U
W
V
X
A
Oil Pan Seal
B
Oil Pan (Style A)
C
Gerotor Gears
(Style A)
D
Oil Pump Assembly
(Style A)
E
Governor Shaft
F
Governor Washer
G
Governor Gear
H
Governor Cup
I
Crankshaft
J
Connecting Rod
K
Piston
L
Piston Pin
M
Piston Pin Retainer
Clip
N
Piston Rings
O
Camshaft
P
Oil Pan Gasket
Q
Governor Cross
Shaft
R
Crankcase
S
Oil Pump Assembly
(Style B)
T
Outer Gerotor Gear
(Style B)
U
Oil Pump Cover
O-ring (Style B)
V
Spring (Style B)
W
Ball (Style B)
X
Oil Screen
(Style B)
Y
Oil Pan (Style B)
