Kohler Command CH20 Service Manual page 69

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 identifi cation mark is up or dye colored stripe (if
contained) is to left of end gap.
3. Top compression ring (top groove): Install top ring
using a piston ring expender. Make sure
identifi cation mark is up or dye colored stripe (if
contained), left of end gap.
24 690 30 Rev. G
Disassembly/Inspection and Service
Install New Piston Rings
Piston Ring Orientation
A
10°
10°
B
Top Oil Ring Rail
A
Intermediate Ring
C
E Top Ring Gap
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 fi 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 identifi 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
identifi cation mark is up or colored dye stripe
(if contained), is to left of end gap.
KohlerEngines.com
E
F
C
Bottom Oil Ring Rail
B
Gap
Oil Ring Expander
D
Gap
F
D
Gap
Gap
FLY Stamp
69