Toro 07150SL Groundsmaster 7200 7210 Service Manual

Dual Temperature Switch (Polar TracTM Machines)
On machines equipped with Polar Trac
TM
, the dual tem-
4.  Check  resistance of  the  switch with  a  multimeter
(ohms setting) as the oil temperature increases.
perature  switch  includes  two  normally open  circuits
used  to  monitor engine  coolant  temperature.  These
switch circuits are the high temperature warning circuit
and the  high temperature  shutdown circuit.  The dual
temperature  switch  is attached  to  the  engine  water
pump housing (Fig. 31).
A.  The high temperature warning circuit is normally
open and should close from 214o to 226oF (101o to
108
oC).
B.  The high temperature shutdown circuit is normal-
ly open and should close from 234o to 246oF (112o to
When engine coolant temperature rises to approximate-
ly 220oF (105oC), the high temperature warning circuit
119
oC).
closes. This closed circuit causes the High Temperature
Warning Light on the console to illuminate and also pro-
vides an input to the Standard  Control Module (SCM).
This input causes  the SCM high temperature  warning
LED to illuminate and the PTO implement to shut down.
5.
not met.
Replace the switch if either of the specifications are
6.
to the engine housing.
After testing is complete, install temperature switch
If  engine coolant  temperature rises  to  approximately
240
closes and  provides an input  to the Standard  Control
Module (SCM). This input causes the SCM high temper-
ature shutdown LED to illuminate and the engine to shut
down.
A.  Clean threads of housing and switch thoroughly.
Apply thread sealant to the threads of the switch.
oF (115oC), the  high temperature shutdown circuit
B.  Thread switch  into the  housing. Torque  switch
from 22 to 28 ft–lb (29.4 to 39.2 N–m).
C. Reconnect harness wires to temperature switch.
The Standard Control Module (SCM) monitors  the op-
eration of the dual temperature switch. If excessive cool-
ant temperature causes either switch circuit to close, the
appropriate LED  on the SCM  will be illuminated.  The
switch and its circuit wiring should be tested using the
SCM before performing the following testing procedure.
7.
Fill engine cooling system. Lower and secure hood.
1
Testing
1.
stop engine, apply parking brake and remove key from
ignition switch. Open hood to gain access to engine.
Park machine on a level  surface, lower implement,
2
1
CAUTION
3
Figure 31
Make sure  engine is  cool before  removing the
dual  temperature  switch from  engine.  Do  not
open radiator cap or drain coolant if the radiator
or engine is hot. Pressurized, hot coolant can es-
cape and cause burns.
1.
2.
Dual temp switch
Warning circuit
3.
Shutdown circuit
2.
dual temperature switch from the engine.
Lower the coolant level in the engine and remove the
3.
thermometer and slowly heat the oil (Fig. 32).
Put the end of the switch in a container of oil with a
CAUTION
Handle the hot oil  with extreme care to prevent
personal injury or fire.
Figure 32
Electrical System
Page 5 – 24
Groundsmaster 7200/7210
Product Specification
CategoriesLawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals
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- 226 pages
Document TypeService Manual
LanguageEnglish
Product BrandToro. Customer Service Representatives are available by phone: Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower
Document File TypePDF
Publishertoro.com
Wikipedia's PageToro Company
CopyrightAttribution Non-commercial
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