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 NAVAIR 17-15-50.4
TM 38-301-4
T.O. 33-1-37-4
CGTO 33-1-37-4
TABLE 2-4. NONAERONAUTICAL EQUIPMENT LUBRICANT SAMPLE
ANALYSIS REQUIRMENT GUIDE (Cont)
II.
TRANSMISSIONS
A.
Spectrometric
1. Pass - Go to II.B.
2. Fail - See wear-metal guidelines for specific equipment
a. Critical - Resample to verify.
(1) Wear-metals - abnormal to high range
(2) Oil contamination by dirt or dust - Si increase
b. Noncritical - Resample to verify, then change oil.
(1) Oil contamination by dirt or dust - Si increase
(2) Additive depletion - Zn, Mg, or Cu decrease
(3) Water or moisture condensation - Na increase
B.
Viscosity
1. Pass - Go to II.C.
2. Fail - See viscosity guidelines
a. Low - Wrong oil, change oil.
b. High - Sludge, water or wrong oil. Verify by water test and change oil.
C.
Water Test - Crackle or Karl Fischer
1. Pass
2. Fail - See guidelines, Vol II, para 4-4.d.
D.
Fourier Transform Infrared (FT-IR) Spectrometric Analysis Results
1. Pass
2. Fail - water, oxidation, Ethylene Glycol, Antiwear Region 1, Antiwear Region 2 and Water
Readings. Change oil and service or replace filter.
III.
HYDRAULIC SYSTEMS
The following tests are approved methods of testing hydraulic fluid condition and may be directed by services as
required. These tests may be performed singly or in combination as required. (Army laboratories shall use
spectrometric, viscosity, and water testing as a minimum.)
A.
Spectrometric
B.
Viscosity
C.
Water testing, Crackle or Karl Fischer Method
D.
Electronic Particulate Count
E.
Colorimetric Patch Testing
F.
Fourier Transform Infrared (FT-IR) Spectrometric Analysis Results
1. Pass
2. Fail - Change oil and service or replace filter.
2-10
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