Periodic Maintenance Chart - Mitsubishi S 12 R User And Maintenance Manual

Chapter 5

PERIODIC MAINTENANCE CHART

How to Use Periodic Maintenance Chart
Periodic inspection not only extends the service life
of the engine but also serves to ensure safe opera-
tion. Be sure to conduct inspections and mainte-
nance according to the periodic maintenance chart.
The maintenance chart shows the standard service
intervals. Whenever you notice the abnormalities
mentioned below, make sure the service must be
performed to the defective part of the engine,
regardless recommended service intervals in the
"Periodic Maintenence Chart"; abnormal noise,
black exhaust smoke, white exhaust smoke, abnor-
mally high temperature of exhaust gas, abnormal
vibration in engine, fuel, oil or exhaust gas leakage.
Note: Appropriate service intervals vary depending
on the usage and operating conditions as well
as consumption of fuel, oil and coolant.
Check the operating record of the engine to
determine the most appropriate service inter-
vals. (Feel free to consult a Mitsubishi dealer
regarding service intervals.)
Perform service items listed under the service inter-
val. Service items with shorter intervals should also
be included in the longer interval service.
Items marked with ¤ in the maintenance chart
require special tools or large equipment. For the
servicing of these items, consult a Mitsubishi
dealer.
Periodic Maintenance Chart
Appropriate service intervals vary depending on the
engine specifications. Perform all daily inspection
and maintenance items in an accordance with the
following 3 categories.
Periodic maintenance chart for regular-
use engine
When the engine is used as a regular use engine,
perform the periodic inspection and maintenance in
accordance with the "Periodic Maintenance Chart
for Engine in Regular Use".
Periodic maintenance chart for emer-
gency engine
When the engine is used as an emergency engine,
perform the periodic inspection and maintenance in
accordance with the "Periodic Maintenance Chart
for Emergency Engine".
Due to the nature of application, an emergency
engine is subject to demanding operating condi-
tions such as a quick startup and immediate supply
of power. In addition, it must operate reliably in the
event of an emergency. Therefore, be sure to per-
form the daily inspection and also conduct the fol-
lowing operation for maintenance purposes.
Once every week: Operate the engine under no
load (for 3 to 5 minutes).
(When operating the engine for the adjustment of
peripheral devices, limit the operating time to 10
minutes.)
Once every month: Operate the engine under load
(for 15 to 30 minutes with more than 1/2 load).
If the engine cannot be operated under load every
month, operate the engine under load (more than 1/
2 load) for more than 2 hours.
During the engine maintenance operation, check
the ease of startup, oil pressure, and exhaust color
and vibration.
Periodic maintenance chart for general-
purpose engine
If the engine is used for different purposes other
than the above usage, do maintenance according
to the "Periodic Maintenance Chart for General-
Purpose Power Supply Engine".
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