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Page Title: ENGINE SMOKES (BLUE SMOKE) DURING START, OPERATION AND SHUTDOWN-continued
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TM
9 - 2 8 3 5 - 2 5 5-3 4
-
3-2. TROUBLESHOOTING CONTINUED
E S - 2 1 . ENGINE SMOKES (BLUE
(5)
d . E N G I N E - CONTINUED
S M O K E ) DURING START, OPERATION
AND SHUTDOWN. - CONTINUED
CONTINUED FROM STEP 8
A.
Replace  adapter  and
shaft  assembly  seal
B.  Replace  No.  7  bearing
C.  Install  forward  engine
D.  Verify  problem  is
solved.
9
Check  seal  rings  (1)  to  see  if
split  lines  (gaps)  (2)  are
facing 180 degrees away from
each  other.
Are gaps 180 degrees apart?
I
,
Position  seal  ring  split
lines  (gaps)  so  they  are
180  degrees  apart.
I
NOTE
10
A  thin
smooth  black
finish
is
OK.
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  rough  coating  of  burnt
oil  deposits  (coking).
Does  seal  area  have  heavy  rough
coating  of  burnt  oil  deposits
(coking).
I
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