 |
|||
|
|
|||
|
|
|||
| ||||||||||
|
|
 NAVAIR 17-15-50.3
TM 38-301-3
T.O. 33-1-37-3
CGTO 33-1-37-3
ENGINE: T74-CP-702 (PT6-A-20/-27/-28/-29/-41/-50)
AIRCRAFT: (C-12/C/D) (UV-18) (SDS-30)
JOAP ATOMIC EMISSION ROTRODE
Fe
Ag
Al
Cr
Cu
Mg
Si
Abnormal Trend
(PPM Increase
4
2
2
2
3
4
15
in 10 hrs)
Normal Range
0-10
0-3
0-4
0-3
0-7
0-10
0-49
Marginal Range
11-12
N/A
5
4
8
11-12
50-60
High Range
13-14
4
6
5
9-10
13-14
61-74
Abnormal
15+
5+
7+
6+
11+
15+
75+
Average Concentration Other Elements:
Fe
Accessory gears and splines
Bearings, bearing load surfaces, bearing races
Fe
&
Cu
Gears and bearing assemblies
Fe
&
Mg
Housing and bearing liners
Fe
Cu
&
Ag
Main bearing
Fe
Cu
&
Mg
Accessory bushing in housing
Ag
Bearing cages
NOTES
1. High Si indicates contamination probably due to sand and dirt or silicon
rubber parts. On infrequent occasions it could result from anti-foaming additive.
2. High Cu & Mg may be due to a bushing problem in the accessory housing.
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals