Maintenance Procedures; Section 2. Maintenance; General; Lubrication Chart - Hobart JET-EX 4 Operation And Maintenance Manual

SECTION 2. MAINTENANCE PROCEDURES

1. General

A suggested Maintenance Schedule is provided in Section 1 of this Chapter. Each step of the schedule is
also covered in general in Section 1. This Section covers maintenance in more detail where necessary.
WARNING: 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 lubrica-
tion means the use of correct lubricants and adherence to a proper time schedule. Lubrication points,
frequency of lubrication, and recommended lubricants are indicated in Figure 1.
B. Lubrication Chart
Lubrication points are illustrated and identified by name on Lubrication Chart, Figure 1.
Number symbols used to designate the kind of lubricant required and the specification recommended
are identified in Figure 2.
Letter symbols used to designate the normal lubrication period are identified in Figure 3.
C. Generator
The 28.5 volt DC generator requires NO lubrication. The armature is supported at the rear by a single,
ball bearing which is lubricated and sealed at the factory for lifetime, maintenance free operation. The
front end of the armature is supported by the engine main bearings.
D. 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 operation.
E. Engine
Although the engine and its accessories require no more attention than any other similar installation,
they still inherently require a major portion of the generator set lubrication and maintenance. Recom-
mendations regarding engine lubrication have been taken from the engine manufacturer's "Mainte-
nance and Operator's Manual".
May 20/89
OM-2049
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