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Page Title:
COMPONENT: HMMWV 6.2 Liter Engine Upper Wear Metal Limits |
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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: HMMWV 6.2 Liter Engine Upper Wear Metal Limits
These interim wear metal guidelines are based on the manufacturer's used lubrication oil chemical analysis. The Oil Analysis
Standard Interservice System (OASIS) software will be modified to reflect actual wear metal parameters.
Wear Metal/
Footnotes
Limits (PPM)
Coolant Elements
-
50
Aluminum
(Al)
A,B
20
Boron
(B)
-
45
(Cr)
A,B,D,E
400 (150)
Copper
(Cu)
A
500
Iron
(Fe)
A
115
Lead
(Pb)
A,B
40
Molybdenum
(Mo)
A,B,C
90
Silicon
(Si)
A,B
50
Sodium
(Na)
-
90
Tin
(Sn)
A.
Values allowed over the component lubrication oils' baseline.
B.
The elements may be present in servicing lubrication oil or coolant
additive packages.
C.
This value can be higher on a new engine or engine recently
serviced due to silicone form-in-place gaskets being utilized.
D.
Engine(s) used in application where extended idling is required
may incur copper readings levels of 600 PPM or higher.
E.
Lower value readings for 1985 year model engines because of
revised rocker arm design.
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