Kohler KT19 series II User Manual

The cylinder bore must be deglazed before service
ring sets are used.
Some important points to remember when ser-
vicing piston rings:
1. If the cylinder block does not need reboring and
if the old piston is within wear limits and free of
score or scuff marks, it may be reused.
2. Remove old rings and clean up grooves. Never
reuse old rings.
3. Before installing new rings on piston, place top
two rings each in turn in its running area in
cylinder bore and check end gap (see Figure 7-
11). This .gap should be .010" /.030" in a used
Figure 7-11. Checking Ring End Gap In Bore
SECTION 7
DISASSEMBLY
cylinder bore and .010" /.020" in a new cylinder
bore.
In service ring sets, oil ring may have up to .060"
ring end gap. Be sure to stagger ring and rails on
installation to piston.
4. Rings must be installed correctly. Ring in-
stallation instructions are usually included with
new ring sets. Follow instructions carefully. Use
ring expander to install rings and check side
clearance of each ring after installation (see
Figure 7-12). For side clearances see "Specifica·
tions And Tolerances" Section 1.
Figure 7-12. Checking Piston- Ring Side Clearance
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lnslall Bollom
Prod. (Single)
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Prod. (3 Piece)
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Service (4 Piece)
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Ring First
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@~
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5
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BOTTOM
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GJ
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{/
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~
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GROOVE
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~
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Prod. Type
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Prod. Type
Prod. Type
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Service (3 Piece)
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MIDDLE
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~r-
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~-
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~r-
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~r-
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GROOVE
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Install Top
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Ring Last
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lnside-=q
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MarLng_,.\
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Bevel
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TOP
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GJ
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on Ring
GROOVE
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~ ~
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Ring With Inside
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With "Top"
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Bevel Up, or
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Marking Up
Figure 7-13. Production Type And Service Type Piston Rings
49

Kohler KT19 series II Specifications

General

Brand	Kohler
Model	KT19 series II
Category	Engine
Language	English