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NAVAIR 17-15-50.4
TM 38-301-4
T.O. 33-1-37-4
CGTO 33-1-37-4
COMPONENT:
Detroit Diesel Allison HT 750CRD (Transmission)
LUBRICANT: MIL-L-2104
Fe
Ag
Al
Cr
Cu
Si
Sn
Ni
Pb
Mo
Mg
Normal Range
0-100
0-11
0-21
0-4
0-202
0-47
0-10
0-5
0-66
0-8
101-
203-
Marginal Range
12-14
22-26
5
48-58
11-13
6
67-82
9
123
249
83-
250-
124-
10-12
59-73
14-16
7-8
15-17
27-33
6
High Range
102
311
153
Abnormal
154+
18+
34+
7+
312+
74+
17+
9+
103+
13+
Abnormal Trend
(PPM Increase
9
2
2
2
24
4
2
2
3
2
in 10 hrs)
TECHNICAL INFORMATION
Silicon additives may be used as antifoaming agents in the
lubricating oil, thus new oil normally gives a reading of 3 to 7
PPM silicon.
Aluminum particles are commonly found in the transmission pan.
Aluminum and cast iron parts have significant amounts of silicon
in their composition.
Transmission is liquid-cooled; therefore, ethylene glycol may be
present in the oil. If significant amounts of ethylene glycol are
found, it is suggested that appropriate action be taken because the
clutches and seals may be affected accordingly.
APPLICABLE END ITEMS
F5070
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