
124 SEBU8219-01
Maintenance Section
Starting Motor - Inspect
i02554941
Starting Moto r - Inspect
SMCS Code: 1451-040; 1453-040
If the starting
motor fails, the engine may not start in
an emergency situation. A scheduled inspection of
the starting motor is recommended.
The starting motor pinion and the flywheel ring gear
must be in good condition in order for the engine
to start prope
rly. The engine will not start if the
starting motor pinion does not engage the flywheel
ring gear. The teeth of the starting motor pinion and
the flywheel r
ing gear can be damaged because of
irregular engagement.
Inspect the s
tarting motor for proper operation. Listen
for grinding when the engine is started. Inspect the
teeth of the starting motor pinion and the flywheel
ring gear. L
ook for patterns of wear on the teeth. Look
for teeth that are broken or chipped. If damaged teeth
are found, the starting motor pinion and the flywheel
ring gear m
ust be replaced.
Electric S
tarting Motor
Note: Problems with the electric starting motor can
be caused b
y the following conditions: malfunction of
the solenoid and malfunction of the electric starting
system.
Inspect the electrical system for the following
conditions:
•
Loose connections
•
Corrosio
n
•
Wires that are worn or frayed
•
Cleanliness
Make repai
rs, if necessary.
Removal a
nd Installation of the
Starting Motor
Refer to the Service Manual, “Disassembly and
Assembly” module for information on removing the
starting
motor and installing the starting motor.
Consult your Caterpillar dealer for assistance.
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Stator Le ad - Chec k
SMCS Code: 4459-535
Visually inspe
ct the following areas for cracking and
physical damage:
•
stator output
leads
•
protective sleeving
•
insula tion
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Stator Windin g Temperature -
Measure/Record
SMCS Code: 4453-082-TA
Some generat
ors are provided with optional 100 Ohm
Resistance Temperature Detectors (RTD). When the
temperature of the stator winding is suspected to be
high, measur
e the temperature. If the generator is
furnished with Resistance Temperature Detectors,
the detectors are installed in the slots of the main
armature (s
tator). The detectors are used with
equipment that is available from the factory. This
equipment is used in order to measure the main
armature’s
winding temperature.
i01539769
Turbocharger - Inspect
SMCS Code: 1052-040
Periodic inspection and cleaning is recommended
for the turbocharger compressor housing (inlet side).
Any fumes from the crankcase are filtered through
the air inlet system. Therefore, by-products from oil
and from combustion can collect in the turbocharger
compressor housing. Over time, this buildup can
contribute to loss of engine power, increased black
smoke and overall loss of engine efficiency.
If the turbocharger fails during engine operation,
damage to the turbocharger compressor wheel
and/or to the engine may occur. Damage to the
turbocharger compressor wheel can cause additional
damage to the pistons, the valves, and the cylinder
head.