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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
rings (page 6-22.5).
B. Replace No. 7 bearing
seal (page 6-22.1).
C. Install forward engine
module (page 5-18).
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
CONTINUED ON NEXT PAGE
3-179
Change 5
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