Textron Jacobsen Super LF 1880 Fairway Mower with ROPS, Инструкции по обслуживанию и ремонту

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ELECTRICAL SYSTEM
10G-24
HORN SWITCH
The horn switch is mounted on the control panel and
has two positions (ON/OFF). The switch is used to
sound the horn. In the OFF position the switch is also
used as a current path for the float relay to sound the
horn in case the hydraulic oil level falls to a critical
level. The switch can be tested as follows:
1. Shut down the engine and remove the ignition
key.
2. Remove the control panel from the top of the
hydraulic tank. Locate the horn switch and discon-
nect the wiring harness connector, see
Figure 10G-10.
3. Set the multimeter to the continuity scale.
4. Place the switch in the OFF position. Check all ter-
minals for continuity (Figure 10G-10).
Continuity should be available between terminal 4
and terminal 5 only.
5. Place the switch in the ON position. Check all ter-
minals for continuity (Figure 10G-10).
Continuity should be available at terminal 5 and
terminal 6 only.
NOTE:
Replace the horn switch if it does meet the above
test results.
Figure 10G-10. Horn Switch
FLOAT SWITCH
The float switch is mounted in the hydraulic tank and
has two positions (ON/OFF). The float switch is used to
warn the operator that the hydraulic oil has dropped to
a critical level. If the oil drops below a safe level the
switch will close and the horn will sound. The switch
can be tested as follows:
1. Shut down the engine and remove the ignition
key.
2. Remove the control panel from the top of the
hydraulic tank. Locate the float switch wiring har-
ness and separate the wiring harness connector,
see Figure 10G-11.
3. Check the switch for continuity by place one test
lead in each side of the switch side harness con-
nector (Figure 10G-11).
Continuity should not be available with hydraulic
oil at the proper level.
4. Drain oil from the tank to just below the float level.
Continuity should be available with the oil level
below the safe level.
Position Terminal Continuity
OFF 4 & 5
ON 5 & 6
If other terminals test with continuity, the switch
should be replaced.
ON OFF
2
5 4
3
6
1