Kohler Command PRO CV682 Service Manual

Install New Piston Rings
Piston Ring Orientation
10°
10°
F
A
B
C
D
E
A
Top Oil Ring Rail
Gap
B
Bottom Oil Ring Rail
Gap
C
Intermediate Ring
Gap
D
Oil Ring Expander
Gap
E Top Ring Gap F FLY Stamp
NOTE: Rings must be installed correctly. Ring
installation instructions are usually included with
new ring sets. Follow instructions carefully. Use
a piston ring expander to install rings. Install
bottom (oil control) ring rst and top
compression ring last.
To install new piston rings, proceed as follows:
1. Oil control ring (bottom groove): Install expander and
then rails. Make sure ends of expander are not
overlapped.
2. Middle compression ring (center groove): Install
center ring using a piston ring installation tool. Make
sure identication mark is up or colored dye stripe
(if contained), is to left of end gap.
3. Top compression ring (top groove): Install top ring
using a piston ring expander. Make sure
identication mark is up or colored dye stripe
(if contained), is to left of end gap.
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 (refer to
Specications). Replace rod and cap if scored or
excessively worn.
Service replacement connecting rods are available in
STD crankpin size and 0.25 mm (0.010 in.) undersize.
Undersized rods have an identication marking on lower
end of rod shank. Always refer to appropriate parts
information to ensure correct replacements are used.
Remove Crankshaft
Inspection and Service
Crankshaft Components and Detail
A Self-Tapping Screw B Flat Washer
C Plug D Crankshaft
A
B
C
D
E
G
F
H
E
Fillet Must Blend Smoothly with Bearing Journal
Surface
F High Point from Fillet Intersections
G 45° Minimum
H This Fillet Area Must Be Completely Smooth
NOTE: If crankpin is reground, visually check to insure
llet blends smoothly with crankpin surface.
NOTE: To prevent repeat failures, camshaft and
crankshaft should always be replaced as a set.
Carefully pull crankshaft from crankcase.
Disassembly/Inspection and Service
5124 690 37 Rev. B KohlerEngines.com

Kohler Command PRO CV682 Specifications

General

Brand	Kohler
Model	Command PRO CV682
Category	Engine
Language	English