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 NAVAIR 17-15-50.3
TM 38-301-3
T.O. 33-1-37-3
CGTO 33-1-37-3
ENGINE:
TF34-GE-400B
AIRCRAFT:
(S-3B) (Navy Only)
JOAP ATOMIC EMISSION ROTRODE
Fe
Ag
Al
Cr
Cu
Mg
Ti
Ni
Abnormal Trend
(PPM Increase
4
2
2
2
2
3
2
2
in 10 hrs)
Normal Range
0-9
0-1
0
0-1
0-1
0-2
0-1
0-3
Marginal Range
10-14
2-5
1-3
2-5
2-4
3-10
3
4
High Range
15-17
6-7
4-5
6
5-10
11-13
4
5-6
Abnormal
18+
8+
6+
7+
11+
14+
5+
7+
Average Concentration Other Elements:
NOTE
High Silver by itself is not cause for rejection of engine.
Fe
Accessory gearbox bearing housings
Main lube and scavenge pump generators and shaft
A-Sump scavenge pump rotor, vanes, and liners
Fe
&
Cr
Fuel pump drive spline
Fe
&
Ni
Cr
Power take-off assembly gears
Fe
&
Cr
Compressor forward shaft
Ni
Mo
Fe
&
Cr
Typical all main engine and accessory gearbox bearing races and balls/rollers
Mo
V
Fe
&
Ni
Nos. 2, 3, 4, 5, 6 and 7 main bearing cages
Ag
Plate
Fe
&
Cr
Plate
All main bearing rotating oil seals
Fe
&
Cr
Cu
Ni
Nos. 1, 2, 3, 4, 5, and 6 main bearing stationary oil seals
Nos. 1 and 2 main bearing housing
Power take-off assembly bearing housing
Al
Si
Front frame
Main lube and scavenge pump housing and port plates
A-Sump scavenge pump housing
Accessory gearbox housing
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