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Troubleshooting
GP Repair
wc_tx000548gb.fm
100
6.22 Checking Voltage to Auto Idle Solenoid
See Graphic: wc_gr003130
Electric shock hazard. Only qualified personnel should conduct this
test.
Problems with the auto idle system can be classified into one of two
categories: electrical problems with power to the idle solenoid or
problems with the mechanical linkage. Before checking the electrical
system, check the governor mechanical linkage
(a)
to make sure it’s
functioning properly.
Electrical problems can be further broken down in to two categories: 1)
power generation by the generator, 2) problems with the electrical
circuit feeding power to the solenoid.
6.22.1 Start the generator.
6.22.2 Unplug the two white/red wires
(b)
from the idle solenoid. Measure the
voltage between the two wires. There should be 28±2VDC.
•
If 28±2VDC is measured, the idle solenoid is receiving the correct
voltage. If the idle solenoid is receiving the correct voltage but is
still not functioning, confirm that it is bad by measuring the resis-
tance of the solenoid’s coil. The coil should measure 26–33
Ohms. Replace the solenoid if the correct resistance is not mea-
sured.
•
If 28±2VDC is not measured, continue.
6.22.3 Stop the generator.
6.22.4 Remove the screws which secure the control panel to the enclosure.
6.22.5 Remove the 5A fuse
(c)
. Start the generator and check the voltage
across the fuse holder. There should be 20–29 Volts.
•
If 20–29 Volts is measured, the source of the problem is in the cir-
cuit from the fuse to the idle solenoid.
•
If 20–29 Volts is not measured, the source of the problem is in the
circuitry between the fuse and the DC winding.
6.22.6 Reinstall the 5A fuse (replace the fuse if it is blown).
WARNING
Содержание GP 3800A
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Страница 68: ...Maintenance GP Repair wc_tx000546gb fm 64 4 29 Engine Schematic all GP GPS 3800A 5600A 6600A...
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