TM 5-5420-226-20-1
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Read and understand the following
Perform compression unbalance test.
l VTM display will indicate
~
Second Technician
l Hold ENGINE
FUEL SHUT OFF switch up and
crank engine by pressing STARTER
switch and
holding until VTM display indicates
m.
l Release STARTER
switch when VTM display changes
from-~
to
~
or
-[.
l Check that VTM dis lay changes to indicate a number
between
q
-d.
Does VTM display indicate a number between
•-~?
1
I
Does VTM display
~
?
l End of STE/lCE test.
l If you came
From - Proceed
To
Symptom
1 Symptom
1 Step ~
Symptom 17 Symptom 17 Step@
v
~ Does VTM display
ml
? I
Rerun compression unbalance test.
STARTER
SWITCH
ENGINE
- STATION
IFUEL
SHUTOFF
SWITCH
rl
VTM DISPLAY
Jd-
IIF VTM display still indicates
~,
notify support maintenance.I
l Operator may have stopped cranking during test.
l Batteries may be discharged. Check battery electrolyte
level, specific gravity and recharge batteries (TM
9-6140-200-14).
Correct problem, repeat test.
TA106776
—
4-87
.
.
