Kohler Command CH20 Service Manual page 73

Crankcase Components
R
A
Q
A Oil Seal
Oil Pick-Up Tube
E
(Style A)
I Camshaft
M Piston
Q Oil Drain Plug
U Ball (Style B)
Oil Pick-Up Tube
Y
(Style B)
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
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.
24 690 30 Rev. G
M
N
O
L
P
H
B Closure Plate (Style A)
Oil Pump Assembly
F
(Style A)
J Piston Pin
N Connecting Rod
R Governor Cross Shaft
V Spring (Style B)
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K
J
X
I
G
F
E
Gerotor Gears
C
(Style A)
G Governor Gear Shaft
K Piston Ring Set
Connecting Rod End
O
Cap
S Closure Plate (Style B)
Oil Pump Cover O-ring
W
(Style B)
Check closure plate, 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.
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 clean 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 and tool bottoms against crankcase.
Reassembly
V
T
U
W
Y
S
D
C
B
A
D Dipstick Tube
H Governor Gear
L Piston Pin Retainer
P Crankshaft
Outer Gerotor Gear
T
(Style B)
Oil Pump Assembly
X
(Style B)
73