TM 5-5420-226-20-1
Symptom-16
DETAILED
TROUBLESHOOTING
PROCEDURE
T
VEHICLE
OPERATION
- POWERPLANT,
RUNNING
-
fw)TE—
If STE/lCE
is available,
perform
Test
No. 14 COMPRESSION
UNBALANCE
(page 4-86).
If STE/lCE
is not available,
go to
Step
@
.
(Continued)
FOR CLARITY
QUADRANT
ASSEMBLIES
NOT SHOWN
J
Check for leaks at fan drive oil seals.
First
and Second
Technician
(Top
Deck)
l Remove engine cooling fans (page 9-55).
l Install
fan rotor
hub spacers
(Item
2, Chapter
3,
Section
I)(page
5-38).
Second
Technician
(Operator’s
Station)
l Start engine.
First
Technician
(Top
of Engine)
l Check for oil leaks around both fan drive oil seals.
Second
Technician
(Operator’s
Station)
l Stop engine.
Is either engine fan drive oil seal leaking?
l Remove
fan
rotor
hub
spacera
(page
5-39).
l Replace
defective
fan
drive
011 aeala
(page
9-59).
/
TA106993
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