Manitowoc Grove TMS9000-2 Series, Руководство по обслуживанию

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Published 01-14-2021 Control # 707-01
ELECTRICAL SYSTEM TMS9000-2 SERVICE MANUAL
through the starter solenoid to the starter motor and
ground. Make repairs as needed. If the starter
solenoid or the starter motor is faulty, replace the
starter.
c. If the starter engages but can’t turn the engine (and
the lights dim, signaling power drain during start
attempt), check the starter’s feed circuit from the
batteries for resistance. If the resistance is high,
make repairs. If the circuit checks out, replace the
starter. If the engine still won’t start, suspect a
seized engine.
d. If the starter turns the engine, but it still won’t start,
suspect a faulty engine control system. Refer to the
engine manual for further instructions.
e. If the engine starts, then shuts down, suspect a
faulty engine control system. Refer to the engine
manual for further instructions.
NOTE: If the starter won’t disengage during running, verify
the starter is mounted properly so its gear won’t
mesh with the engine’s flywheel when not trying to
start engine. Troubleshoot the starter relay and
ignition switch for closed contacts. If these
components check out, replace the starter.
Troubleshooting Engine Charging Problems
1. Verify battery terminals are connected and clean and all
wires in the charging system are in good repair and are
connected properly.
2. Verify the alternator belt is properly installed and is
under proper tension.
3. Verify the batteries put out 24 volts minimum. Charge
battery as needed so the battery can supply a minimum
excitation voltage to the engine’s charging system.
4. Verify there is a minimum of 24 volts at the alternator
from the batteries, and that the alternator is properly
grounded.
5. Replace the alternator if the other conditions check out.
6. Refer to the engine manual for further instructions.
NOTE: If the alternator runs noisily, check belt tension. If
problem persists, replace alternator.
If the alternator overcharges (voltmeter reads high,
light bulbs burn out quickly), look for a ground
where one shouldn’t exist. If external wiring checks
out, replace alternator. (The alternator probably
has an internal ground or a faulty internal voltage
regulator.)
Troubleshooting Slip Ring-Caused
Electrical Problems
Many crane component electrical troubles can be traced to
the electrical slip ring. Troubles common to the slip ring are
improper mounting, foreign material between the brushes
and slip rings, incorrect wiring from the slip rings to the
components, incorrect wire size, worn brushes, improper
spring tension on the brush assembly, and loose setscrews
on the slip ring assembly. Refer to the electrical schematic
and wiring diagram for slip ring connections and amperages.
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