Reelmaster 3550−D/3555−D/3575−DPage 5 − 30Electrical System
Parking Brake Switch
The parking brake switch is a normally closed proximity
switch that is located on the control console (Fig. 32).
The sensing plate that opens the switch is the parking
brake lever.
When the parking brake is applied, the parking brake
lever is positioned near the target end of the parking
brake switch so the switch is opened. The parking brake
lever is moved away from the switch when the parking
brake is released causing the switch to close.
The TEC controller monitors the position of the parking
brake switch (open or closed). Using inputs from the
parking brake switch and other switches in the interlock
system, the TEC controller controls the energizing of the
fuel stop solenoid and fuel pump (see Table 3: Input
Conditions Required to Illuminate Diagnostic Display
Outputs in this chapter).
Testing
1. Park machine on level surface, lower cutting units,
stop engine, apply parking brake and remove key from
ignition switch.
2. Make sure the parking brake switch is properly ad-
justed (see Parking Brake Switch in the Adjustments
section of this chapter).
3. Before disconnecting the switch for testing, the
switch and its circuit wiring should be tested as a TEC
electrical input using the Diagnostic Display (see Diag-
nostic Display in this chapter). If input testing verifies
that the switch and circuit wiring are functioning correct-
ly, no further switch testing is necessary. If, however, in-
put testing determines that the switch and circuit wiring
are not functioning correctly, proceed with the following
switch testing procedure.
4. Remove cover from control panel to gain access to
parking brake switch.
5. Make sure ignition switch is OFF and disconnect the
parking brake switch connector from machine wire har-
ness.
6. Verify that the machine wire harness connector ter-
minal for black wire is closed (continuity) to ground.
1. Control panel cover
2. Parking brake lever
3. Brake switch
4. Jam nut (2)
5. Lock washer (2)
Figure 32
1
2
4
4
5
3
7. Turn ignition switch to the ON position (do not start
engine) and verify with a multimeter that machine wire
harness connector terminal for pink wire has system
voltage (12 VDC) present.
8. If black wire is closed to ground, the pink wire has
system voltage present and the switch is properly ad-
justed, replace and adjust the parking brake switch.
9. Reconnect switch after testing.
10.Install cover to control panel.
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