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Page Title: ENGINE SMOKES (BLUE SMOKE) DURING START AND/OR SHUTDOWN ONLY-continued
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TM
9-2835-255-34
3-2. TROUBLESHOOTING - CONTINUED
d. ENGINE - CONTINUED
(4)
E S - 2 0 . ENGINE SMOKES (BLUE
S M O K E ) DURING START AND/OR
SHUTDOWN ONLY. OK DURING
OPERATION.  - CONTINUED
CONTINUED FROM STEP 8
A. Replace  adapter  and
shaft  assembly  seal
B. Replace  No.  7  bearing
C.  I n s t a l l  f o r w a r d  e n g i n e
D. V e r i f y  p r o b l e m i s
solved.
9
Check  seal  rings  (1)  to  see  if
split  lines  (gaps)  (2)  are
facing 180 degrees away from
each  other.
I
Are gaps 180 degrees apart?
I
I
Position  seal  ring  split
lines  (gaps)  so  they  are
180  degrees  apart.
10
NOTE
A  thin
smooth  black
finish
is
I
OK.
I
I
Check No.  7  b e a r i n g  s e a l  a r e a
(3) on RGB assembly (4) for a
heavy  rouqh  coating  of  burnt
oil  deposits  (coking).
Does  seal  area  have  heavy  rough
coating  of  burnt  oil  deposits
(coking)?
I
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