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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: T64-GE-100/-413/-416/-416A/-416A+/-419
AIRCRAFT: (CH-53D/E) (MH-53E)
JOAP ATOMIC EMISSION ROTRODE
Fe
Ag
Al
Cr
Cu
Mg
Abnormal Trend
(PPM Increase
4
2
2
2
3
in 10 hrs)*
Normal Range
0-14
0-1
0-1
0-1
0-2
Marginal Range
15-17
2-3
2-3
2-3
3-6
High Range
18-21
4-5
4-5
4
7-9
Abnormal
22+
6+
6+
5+
10+
Average Concentration Other Elements:
Ni=1
Pb=2
Si=3
Sn=7
Ti=1
Mo=1
DO NOT REMOVE ENGINE FOR HIGH SILVER ALONE. IRON AND/OR COPPER SHOULD BE IN MARGINAL RANGE ALSO.
*
If the calculated PPM trend value is equal to or greater than the trend PPM value limit, the engine has an
abnormal trend.
Fe
Fe
Ag
Fe
Ag
Power turbine shafts
Fe
Ag
Cu
PTO bearings
Ag
Cu
Main bearing cages
Al
Lube and scavenge oil pumps and thermal gradient housing
NOTE
Thermal gradient housing could be prime source of A1 especially after heavy use of
engine anti-icing system.
OIL CAPACITY AND CONSUMPTION INFORMATION
1. Oil capacity for the MH-53E is 2.8 gallons in the engine oil tank, 2.6 gallons in each cabin auxiliary
oil tank.
2. The maximum oil consumption rate is 3/4 pint per hour.
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