Engine Reconditioning; Cylinder Block - Kohler K482 Service Manual

Twin cylinder engine
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ENGINE RECONDITIONING

A l l p a r t s s h o u l d b e thoroughly c l e a n e d - - d i r t y p a r t s c a n n o t be a c c u r a t e l y gauged o r p r o p e r l y
i n s p e c t e d f o r w e a r o r d a m a g e .
g r e a s e , o i l a n d g r i m e a c c u m u l a t i o n f r o m engine p a r t s .
t r a c e of the c l e a n e r i s r e m o v e d b e f o r e t h e engine i s r e a s s e m b l e d a n d p l a c e d i n o p e r a t i o n .
a m o u n t s of t h e s e c l e a n e r s quickly b r e a k down the l u b r i c a t i n g p r o p e r t i e s of engine o i l s .

CYLINDER BLOCK

1.
I n s p e c t i o n
A .
G a s k e t s u r f a c e s
B.
B e a r i n g s , R a c e s , T r a n s f e r S l e e v e s
b e a r i n g t h a t i s p r e s s f i t t e d in block.
h e a r i n g i n c l o s u r e p l a t e a t t h i s s a m e t i m e .
a n d o u t e r b e a r i n g r a c e s .
g r o o v i n g o r scuffing, c h e c k f u r t h e r t o s e e if w e a r i s w i t h i n l i m i t s .
u n l e s s r e p l a c e m e n t i s n e c e s s a r y .
p a r t s .
Running c l e a r a n c e of t r a n s f e r s l e e v e s on K662 i s . 0 0 0 - . 0025".
C.
B u s h i n g s ( C a m s h a f t )
S e e C l e a r a n c e S e c t i o n f o r w e a r l i m i t s .
r e a m i n g , a r e a v a i l a b l e if r e p l a c e m e n t is n e c e s s a r y .
D.
C y l i n d e r B o r e
F i t s a n d C l e a r a n c e Section).
only l i g h t d e g l a z i n g m a y b e n e c e s s a r y .
2 .
Reconditioning
A .
i n s i d e m i c r o m e t e r t o m e a s u r e w e a r then s e l e c t n e a r e s t s u i t a b l e o v e r s i z e of e i t h e r . 0 1 0 ,
, 0 2 0 o r , 0 3 0 " .
s i z e p i s t o n a n d r i n g a s s e m b l i e s .
e i t h e r p o r t a b l e d r i l l s o r d r i l l p r e s s e s , the u s e of a low s p e e d d r i l l p r e s s is p r e f e r r e d a s
T h e r e a r e m a n y c o m m e r c i a l c l e a n e r s a v a i l a b l e t h a t quickly r e m o v e
-
C h e c k a l l s u r f a c e s t o m a k e s u r e t h a t they a r e f r e e of g a s k e t f r a g m e n t s .
If v i s u a l i n s p e c t i o n of t h e s e p a r t s r e v e a l s n o e v i d e n c e of s c o r i n g ,
-
C h e c k b u s h i n g s f o r s i g n s of s c u f f i n g , s c o r i n g a n d e x c e s s i v e w e a r .
-
If badly s c o r e d , e x c e s s i v e l y w o r n o r t a p e r e d o r o u t of r o u n d m o r e than
If c y l i n d e r b o r e i s not d a m a g e d a n d is within t o l e r a n c e s ,
-
C y l i n d e r B l o c k
-
S e e C l e a r a n c e S e c t i o n f o r o r i g i n a l c y l i n d e r b o r e s i z e .
If s u c h a c l e a n e r i s u s e d , m a k e s u r e t h a t a l l
-
On K482, K532 m o d e l s , c a r e f u l l y i n s p e c t s l e e v e type
On two s l e e v e b e a r i n g m o d e l s , a l s o i n s p e c t s l e e v e
On K662 m o d e l s , c h e c k o i l t r a n s f e r s l e e v e s
If c r a n k s h a f t h a s t o b e r e g r o u n d , u n d e r s i z e h e a r i n g s
P r e c i s i o n type b u s h i n g s , which do not r e q u i r e l i n e
Use a n i n s i d e m i c r o m e t e r t o d e t e r m i n e a m o u n t of w e a r (See
While m o s t c o m m e r c i a l c y l i n d e r h o n e s c a n be u s e d with
E v e n s m a l l
Do not r e m o v e p a r t s
Use a n

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