Backlap Switches
Thefrontandrear backlap switches are normally closed
ball switches that are in the normal, closed state when
the backlap lever is in the backlap position. When the
backlap lever is in the mow position, the switch opens.
Thebacklapswitchesareattachedtothehydraulic mow
control manifold located under the seat (Fig. 38). The
Electronic Control Module uses thebacklap switches as
inputs to allow only one person to backlap any of the re-
els and also to prevent the cutting reels from raising dur-
ing backlapping.
2
4
3
5
1
Testing
1.
Before disconnecting the backlap switch for testing,
the switch and its circuit wiring should be tested as an
ECM input with the Diagnostic Display (see Diagnostic
Display in the Troubleshooting section of this chapter).
Figure 38
1.
2.
3.
Mow manifold
Front backlap switch
Front backlap lever
4.
5.
Rear backlap switch
Rear backlap lever
2.
If the Diagnostic Display verifies that backlap switch
and circuit wiring are functioning correctly, no further
switch testing is necessary.
15
ft--lb
3
(20 N--m)
FRONT
4
3.
If the Diagnostic Display determines that backlap
switch and circuit wiring are not functioning correctly,
5
2
test backlap switch as follows:
A. Make sure ignition switch is in the OFF position.
B. Tilt operator seat to gain access to backlap
switch. Locate the backlap switch on hydraulic mow
control manifold. Disconnect the harness electrical
connector from the backlap switch.
3
4
5
C. Checkthecontinuityoftheswitchbyconnectinga
multimeter (ohms setting) across the switch connec-
tor terminals.
1
Figure 39
4.
5.
D. With the ignition switch in the OFF position, turn
the backlap lever to the backlap position while
watching the multimeter. Continuity should be made
as the switch closes.
1.
2.
3.
Mow manifold
Backlap switch
O--ring
Dowel pin
Ball
E. Turn the backlap lever to the mow position while
watching the multimeter. Continuity should be bro-
ken as the switch opens.
F. If backlap switch is faulty, replace switch.
G. If the neutral switch tests correctly and a circuit
problem still exists, check wire harness (see Wiring
Schematic and Circuit Drawings in Chapter 9 -- Elec-
trical Diagrams).
H. Connect harness electrical connector to the
backlap switch. Lower operator seat.
Electrical System
Page 5 -- 34
Reelmaster 5010 Series
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