Toro 10176SL Service Manual Models 30448 30446 Groundsmaster 4000 4010 D D Preface

Flow Divider and Engine Cooling Fan Switches
The flow divider  and engine cooling  fan switches are
identical, two (2)  position rocker switches  that are lo-
cated on the control console (Fig. 29). These switches
have a normal and a momentary position.
6.  If switch tests correctly and  circuit problem still ex-
ists, check wire harness (see Electrical Schematics and
Wire Harness Drawings in Chapter 10 -- Foldout Draw-
ings).
The  flow divider  switch  is used  as  an  input for  the
TEC--5002 controller to energize the solenoid valve in
the hydraulic traction  manifold. When the flow  divider
switch is  depressed  (momentary), traction  pump hy-
draulic  flow is  split  between the  front  wheel motors
(approximately 45%)and rearaxle motor (approximate-
ly 55%)  to reduce the chance  that excessive traction
pump flow goes to  a spinning wheel. The flow divider
switch only functions when the machine Hi/Low speed
switch is in the Low speed (4WD) position.
7.  After  testing is  completed,  connect wire  harness
connector to the switch.
8.
Assemble console arm (see Console Arm Assembly
in the Service and Repairs section of Chapter 7 -- Chas-
sis).
1
The engine cooling fan switch is used as an input for the
TEC--5002 controller to allow the engine cooling fan to
run in the normal, automatic mode or in the manual, re-
verse (momentary) direction.
2
Testing
1.
Before disconnecting the flow divider or engine cool-
ing fan switch for testing, the switch and its circuit wiring
should be tested as a TEC input with the Diagnostic Dis-
play(seeDiagnosticDisplayintheTroubleshootingsec-
tion of this  chapter). If the Diagnostic  Display verifies
thatswitchandcircuitwiringarefunctioningcorrectly,no
further switch testing is necessary. If, however, the Dis-
playdeterminesthattheswitchandcircuitwiringarenot
functioning correctly, proceed with test.
3
Figure 29
1.
2.
Console arm
Cooling fan switch
3.   Flow divider switch
2.
Make sure ignition switch is OFF. Remove key from
ignition switch.
3.
Disassemble  console arm  to  gain  access to  the
switch that is to be tested (see Console Arm Disassem-
bly in the Service  and Repairs section of Chapter 7  --
Chassis).
BACK OF SWITCH
4.
Disconnect harness  electrical  connector from  the
switch.
Figure 30
5.
With  the use  of a  multimeter  (ohms setting),  the
NOTE:  Only flow divider and cooling fan switch termi-
nals 1 and 2 are used on Groundsmaster 4000--D and
switch functions  may be tested to  determine whether
continuity exists between the various terminals for each
position. The switch terminals are marked as shown in
Figure 30. The circuitry of the flow divider and  cooling
fan switch is shown in the chart below. Verify continuity
between switch terminals.
4010--D
machines.
SWITCH
POSITION
NORMAL
CIRCUITS
OTHER
CIRCUITS
NORMAL
2 + 3
2 + 1
5 + 6
5 + 4
MOMENTARY
Groundsmaster 4000--D/4010--D
Page 5 -- 27
Electrical System
Product Specification
CategoriesLawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals
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