Piston Ring Replacement - Honda Accord 2008 Manual

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Engine Block
Piston Ring Replacement
1. R e m o v e t h e p i s t o n s f r o m t h e e n g i n e b l o c k
( s e e p a g e 7-12).
2. U s i n g a r i n g e x p a n d e r ( A ) , r e m o v e t h e o l d p i s t o n
r i n g s ( B ) .
B
3. C l e a n a l l t h e r i n g g r o o v e s t h o r o u g h l y w i t h a
s q u a r e d - o f f b r o k e n r i n g , o r a r i n g g r o o v e c l e a n e r
w i t h a b l a d e t o f i t t h e p i s t o n g r o o v e s . F i l e d o w n t h e
b l a d e , if n e c e s s a r y . T h e t o p r i n g a n d s e c o n d r i n g
g r o o v e s a r e 1.2 m m (0.05 i n . ) w i d e , a n d t h e o i l r i n g
g r o o v e is 2.8 m m (0.11 i n . ) w i d e . D o n o t u s e a w i r e
b r u s h t o c l e a n t h e r i n g g r o o v e s , o r c u t t h e r i n g
g r o o v e s d e e p e r w i t h t h e c l e a n i n g t o o l .
N O T E : If t h e p i s t o n is t o b e s e p a r a t e d f r o m t h e
c o n n e c t i n g r o d , d o n o t i n s t a l l n e w r i n g s y e t .
4. U s i n g a p i s t o n , p u s h a n e w r i n g ( A ) i n t o t h e
c y l i n d e r b o r e 1 5 — 2 0 m m ( 0 . 6 — 0 . 8 in.) f r o m t h e
b o t t o m .
5. M e a s u r e t h e p i s t o n r i n g e n d - g a p (B) w i t h a f e e l e r
g a u g e :
• If t h e g a p is t o o s m a l l , c h e c k t o s e e if y o u h a v e
t h e p r o p e r r i n g s f o r y o u r e n g i n e .
• If t h e g a p is t o o l a r g e , r e c h e c k t h e c y l i n d e r b o r e
d i a m e t e r a g a i n s t t h e w e a r l i m i t s ( s e e s t e p 4 o n
p a g e 7-16). If t h e b o r e is o v e r t h e s e r v i c e l i m i t ,
t h e e n g i n e b l o c k m u s t b e r e b o r e d .
P i s t o n R i n g E n d - G a p
T o p R i n g :
S t a n d a r d ( N e w ) : 0 . 2 0 — 0 . 3 5 m m
( 0 . 0 0 8 - 0 . 0 1 4 in.)
S e r v i c e L i m i t :
0.60 m m (0.024 in.)
S e c o n d R i n g :
S t a n d a r d ( N e w ) : 0 . 4 0 — 0 . 5 5 m m
( 0 . 0 1 6 - 0 . 0 2 2 in.)
S e r v i c e L i m i t :
0.70 m m (0.028 in.)
O i l R i n g :
S t a n d a r d ( N e w ) : 0 . 2 0 — 0 . 7 0 m m
( 0 . 0 0 8 - 0 . 0 2 8 in.)
S e r v i c e L i m i t :
0.80 m m (0.031 in.)
7-22

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