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 NAVAIR 17-15-50.3
TM 38-301-3
T.O. 33-1-37-3
CGTO 33-1-37-3
GTCP36-50
(A-10 APU)
JOAP ATOMIC EMISSION ROTRODE
Fe
Ag
Al
Cr
Cu
Mg
Sn
Abnormal Trend
(PPM Increase
5
2
2
2
6
2
5
in 10 hrs)
Normal Range
0-12
0-3
0-3
0-3
0-15
0-3
0-12
Marginal Range
13-16
N/A
N/A
N/A
16-20
N/A
13-15
High Range
17-20
4-5
4-5
4-5
21-23
4-5
16-18
Abnormal
21+
6+
6+
6+
24+
6+
19+
Average Concentration Other Elements:
Ni=3
Pb=4
Si=10
Ti=3
Mo=3
Fe
Starter clutch shaft
Oil pump gear, shaft
Ring gear
Planetary & sun gears, and shafts
Fe
&
Cr
Main drive bearings
Idler gear bearings
Planetary gear bearings
Fe
Cr
&
Mo
Main shaft bearings
Al
Gearbox housing
Oil pump housing
Cu
&
Sn
Oil pump bushing
Starter clutch bearings
Ag
(Plating) Main shaft rear bearing
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