Kohler Courage SV810 [64/84] Disassembly inspection and service
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Kohler Courage SV810 [64/84] Disassembly inspection and service

Kohler Courage SV810 [64/84] Disassembly inspection and service
64
Disassembly/Inspection and Service
KohlerEngines.com 32 690 01 Rev. H
Connecting Rods/Piston/Breather Components
H
G
J
F
A
B
D
C
B
E
I
K
A Piston Ring Set B Piston Pin Retainer
C Piston (Style A) D Piston Pin
E Connecting Rod F
Connecting Rod
End Cap
G Breather Filter H
Breather Cover
Gasket
(if equipped)
I
Inner Breather
Cover
J Oil Seal
K Piston (Style B)
Remove Connecting Rods with Pistons and Rings
NOTE: If a carbon ridge is present at top of either
cylinder bore, use a ridge reamer tool to remove
it before attempting to remove piston.
NOTE: Cylinders are numbered on crankcase. Use
numbers to mark each end cap, connecting rod
and piston for reassembly. Do not mix end caps
and connecting rods.
1. Remove screws securing closest connecting rod end
cap. Remove end cap.
2. Carefully remove connecting rod and piston
assembly from cylinder bore.
3. Repeat above procedure for other connecting rod
and piston assembly.
Connecting Rods
Offset, stepped-cap connecting rods are used in all
these engines.
Inspection and Service
Check bearing area (big end) for excessive wear, score
marks, running and side clearances (See Specifi cations).
Replace rod and cap if scored or excessively worn.
Service replacement connecting rods are available in
STD size and 0.25 mm (0.010 in.) undersize. Undersized
rods, 0.25 mm (0.010 in.), have an identifi cation marking
on lower end of rod shank. Always refer to appropriate
parts information to ensure correct replacements are
used.
Piston and Rings
Inspection
Piston and Rings Components and Details
A
C
B
Style A
D
E
F
G
I
H
Style B
F
E
D
H
G
A Piston Ring B End Gap
C Identifi cation Mark D Piston
E
Top Compression
Ring
F
Center
Compression Ring
G Rails H Expander
I
Oil Control Ring
(3 Piece)
Scuffi ng and scoring of pistons and cylinder walls occurs
when internal engine temperatures approach welding
point of piston. Temperatures high enough to do this are
created by friction, which is usually attributed to improper
lubrication and/or overheating of engine.
Normally, very little wear takes place in piston boss-
piston pin area. If original piston and connecting rod can
be reused after new rings are installed, original pin can
also be reused but new piston pin retainers are required.
A piston pin is included as part of piston assembly – if
pin boss in piston or pin are worn or damaged, a new
piston assembly is required.

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