Genera I - Hobart 9OC24S Operation Manual

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OPERATION, MAINTENANCE, AND OVERHAUL MANUAL, TM-240A
SELF-PROPELLED GENERATOR SET, SPEC. NO, 5381A
SECTION 2, MAINTENANCE PROCEDURES
1. Genera I
A suggested Maintenance Schedule was provided in Section 1 of this Servicing Chapter.
Each step of the schedule was also covered in general in Section 1. This Section covers
maintenance in more detail where necessary.
WARN ING: STOP OPERATION IMMEDIATELY IF A SERIOUS OR POSSIBLY
DANGEROUS FAULT IS DISCOVERED.
2.
Lubrication
A. General
Proper lubrication is one of the most important steps in good maintenance procedure.
Proper lubrication means the use of correct lubricants and adherence to a proper
time schedule. Lubrication points, frequency of lubrication, and recommended lub-
ricants are indicated in Figure 1.
B. AC Generator
The 400-Hz 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 recommended that bearings be replaced after 5000
hours service.
Complete replacement instructions are included in Chapter 6.
C. Generator Controls
Generator controls and instruments require no periodic lubrication. A few drops
of oil may be required on door hinges occasionally to insure free and quiet opera-
tion .
D. Engine Lubrication
Although the engine and its accessories require no more attention than any other
similar installation, they still inherently require a maior portion of the generator
set lubrication and maintenance.
Recommendations regarding engine lubrication
have been taken from the engine manufacturer's "Operation and Maintenance
Manual" and incorporated here to make them more readily available to operators
and maintenance personnel.
(1) Lubrication schedule
Time schedules indicated on the Lubrication Chart, Fig. 1, are approximate.
They are -ba.sed on average operating conditions.
It may be necessary to
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