Maintenance
Recommendations
i05264090
General Maintenance
Information
SMCS Code: 4450; 7000
Note: Read the warnings and read the instructions
that are contained in the Safety Section of this
manual. These warnings and instructions must be
understood before you perform any operation or any
maintenance procedures.
Rotating electric machines are complex structures
that are exposed to the following forms of stress:
• mechanical
• electrical
• thermal
• environmental
These stresses may be of varying magnitudes. The
electrical insulation systems are susceptible to
damage that is caused by the stresses that are listed
above. Exposure to these stresses may shorten the
effective life of the electrical insulation system.
Therefore, the service life of an electric machine will
largely depend on the serviceability of the electrical
insulation systems. An inspection program and a
testing procedure are recommended. An inspection
program and a testing procedure will ensure that the
equipment is maintained in satisfactory condition.
This will increase field reliability.
A regular maintenance and inspection program can
provide an evaluation of the present condition of the
equipment. A regular maintenance program and a
regular inspection program can also reveal future
problems. The frequency of this maintenance
program will depend on the following factors:
• application
• environmental conditions
• experience level of the operator
• philosophy of the operator
A regular maintenance program is strongly
recommended. This program would involve the
following steps:
• periodic disassembly
• knowledgeable visual examination of the
equipment
• the application of electrical tests
Never perform a test over the rated potential. These
tests can damage insulation that is contaminated or
insulation that is in marginal condition. For more
information, refer to “I.E.E.E. Standard 432-1992” or
consult a Cat dealer.
i02909163
System Pressure Release
SMCS Code: 1250; 1300; 1350; 5050
Coolant System
Pressurized system: Hot coolant can cause seri-
ous burn. To open cap, stop engine, wait until ra-
diator is cool. Then loosen cap slowly to relieve
the pressure.
To relieve the pressure from the coolant system, turn
off the engine. Allow the cooling system pressure cap
to cool. Remove the cooling system pressure cap
slowly in order to relieve pressure.
Fuel System
To relieve the pressure from the fuel system, turn off
the engine.
High Pressure Fuel Lines (If Equipped)
Contact with high pressure fuel may cause fluid
penetration and burn hazards. High pressure fuel
spray may cause a fire hazard. Failure to follow
these inspection, maintenance and service in-
structions may cause personal injury or death.
The high pressure fuel lines are the fuel lines that are
between the high pressure fuel pump and the high
pressure fuel manifold and the fuel lines that are
between the fuel manifold and cylinder head. These
fuel lines are different from fuel lines on other fuel
systems.
This is because of the following differences:
• The high pressure fuel lines are constantly
charged with high pressure.
• The internal pressures of the high pressure fuel
lines are higher than other types of fuel system.
Before any service or repair is performed on the
engine fuel lines, perform the following tasks:
1. Stop the engine.
SEBU7125-13
99
Maintenance Section
Maintenance Recommendations
To Next Page
Loading...