Maintenance Procedures; Ac Generator; Lubrication Schedule; General - Hobart 120CU20 Operation And Maintenance Manual With Illustrated Parts List

OM-2228 / Operation and Maintenance Manual
120CU20 / Series 500120 / 400 Hz. Generator Set
Section 2

1) General.

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.
WARNING
STOP operations at once 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 lubricants are indicated in Figures 1 and 2.
b) AC Generator.
The 400 Hz generator requires NO lubrication.
c) Generator Controls.
Generator controls and instruments require no periodic lubrication.
d) 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.
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, Figure 1, are approximate. They are based
on average operating conditions. It may be necessary to lubricate more frequently under severe
operating conditions such as low engine temperatures, high oil temperatures, or intermittent
operation. However, time intervals should not exceed those indicated in the chart without careful
evaluation.
October 15, 2013

Maintenance Procedures.

Chapter 2-2
Page 1