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 NAVAIR 17-15-50.3
TM 38-301-3
T.O. 33-1-37-3
CGTO 33-1-37-3
GTCP85-106
(C-141 APU)
JOAP ATOMIC EMISSION ROTRODE
Fe
Ag
Al
Cr
Cu
Mg
Abnormal Trend
(PPM Increase
13
2
4
2
5
3
in 10 hrs)
Normal Range
0-43
0-2
0-10
0-4
0-20
0-6
Marginal Range
44-53
N/A
11-12
5
21-28
7
High Range
54-65
3
13-14
6
29-34
8-9
Abnormal
66+
4+
15+
7+
35+
10+
Average Concentration Other Elements:
Ni=1
Pb=5
Si=7
Sn=11
Ti=1
Mo=2
Increase in Fe and Cu indicates discrepancy in starter clutch area.
Fe & Cr
Bearing rollers and races
Al
Bearing sleeve
Fe & Ni
Oil pump gears and shaft
Fe & Cr
Ni
Turbine and aft compressor carbon seal races
Turbine section bearing spacer and housing
Aft compressor section shaft and bearing mount
Accessory assembly carbon seal rotors, gears, shafts, bearing housing, retainers
and carries
Output geardrive seal runners and bearing retainer gasket seals
Forward compressor assembly shaft and inlet compressor seal races
Cu
Oil pump bushings
Cu & Ag
Turbine section bearing cages
Cu & Sn
Output geardrive bearing cages
Aft compressor section bearing cages
Oil pump gear pins
Cu & Ag
Sn
Accessory assembly bearing cages
Al & Cu
Forward compressor assembly bearing and seal housing
Oil pump body, cover and plate assembly
Mg
Accessory case assembly
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