Hobart 5359D Operation And Maintenance Manual page 85

OM 2012
4. Lubricoticn
FTOPW ItibrIcation is one of the most important steps in go<;d malntenurico p;-occdures.
Proper lubricatio- ,, means the use of con-ect lubricants and adherence to a prai?er
time
scitcdulc.
Lubrication point!:, frequency of fu!>ricat ion, and reccm~;.~en:ied
lubricants are indicated in Figure 3.
B.
AC Generator
The 400-i+ generator requires NO lubrication. The rotor is supported by two,
ball bearings which are lubricated and sealed at the factory For lifetime,
main-
tenance-free operation.
It is suggested t-hat generator bearings be rep!aced after
5000 hours of operaf ion.
C. Generator Controls
Generaror controls
ad
instruments require no periodic lubrication. A few drops
of oil muy be required on door hinges occasionally to insure free and quiet opera-
tion.
D. Engine
D
Although the engine and its accessories require no more attention than any other
similar installation, they still inherently require a major'portion of the g&rator
set Iubricotion and maintenance. Recommendations regarding engine lubrication
have been taken from the engine manufacturer's "Operator's Manual" and in-
corporated here to make them more readily available to operators and main-
tenance penonne I.
(1) Lubrication schedule
Time schedules indicated on rhe Lubrication Chart, Pig. 3, are approximate.
They are based on average operating conditions.
It may he necessary fo
lubricate more frequently under severe operating conditions such as: low
engine temperatures,
excessively heavy loads and high oil temperatures,
or intermittent operation. However, time intervals should not exceed those
indicated in the chart without careful evaluation.
' (2) Oil specification
Oil recommended by the engine manufacturer is identified by a military
specification number, MIL-L-2104B. Because of the substantial increase
in additive concentration in some MIL-L-21048 oifs to meet service "MS"
requirements, recommended oil is qualified still further by the following
/imitations.
Au925335 ;
2-1
I
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