Hour Meter
The hour meter is located on the outside of the control
arm.
Hobbs
1.
Remove control arm covers to gain access to hour
QUARTZ
meter and meter terminals (see Control Arm Disassem-
bly in the Service and Repairs section of Chapter 6 --
Chassis).
1
10
0
0 0 0 1
HOURS
2.
cate the hour meter and disconnect the wire harness
electrical connector from the meter.
Make sure ignition switch is in the OFF position. Lo-
+
3.
to the positive (+) terminal of the hour meter.
Connect the positive (+) terminal ofa12 VDC source
BACK
4.
Connect the negative (--) terminal of the voltage
source to the other terminal of the hour meter.
Figure 21
5.
The hour meter should move 1/10 of an hour every
six (6) minutes.
6.
7.
8.
Disconnect the voltage source from the hour meter.
Replace the hour meter if necessary.
Connect wire harness electrical connector to the
hour meter.
9.
Arm Assembly in the Service and Repairs section of
Chapter 6 -- Chassis).
Install control arm covers to machine (see Control
Temperature Gauge
The temperature gauge on the control panel indicates
engine coolant temperature level during machine op-
eration.Thechangingresistanceoftheenginetempera-
ture sender signals the temperature gauge.
2
The temperature gauge should display the first green
segment when the ignition switch is turned to RUN. The
first yellow segment on the gauge should display when
engine coolant temperature is approximately 212oF
(100
1
oC).
Whenenginecoolanttemperaturerisestoapproximate-
ly221oF(105oC),thetemperaturegaugeshoulddisplay
the first red segment. At this point, the temperature
gauge provides an input to the TEC controller. This con-
troller input causes the high temperature warning light
on the control panel to illuminate and the cutting decks
to shut down.
Figure 22
1.
Control panel
2.
Temperature gauge
Electrical System
Page 5 -- 24
Groundsmaster 4300--D
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