Temperature Sender
The temperature sender is located near the alternator
onthe water flange attached to theengine cylinder head
(Fig. 50). The resistance of the temperature sender re-
duces as the engine coolant temperature increases.
There is a gray harness wire attached to the switch.
1
Testing
1.
harness wire from temperature sender and remove the
temperature sender from water flange.
Lower coolant level in the engine, disconnect gray
2
2.
Suspend sender in a container of oilwith athermom-
eter and slowly heat the oil (Fig. 51).
CAUTION
Figure 50
1.
Temperature sender
2.
Alternator
Handle the hot oil with extreme care to prevent
personal injury or fire.
NOTE: Prior to taking resistance readings with a digital
multi meter,short themeter testleadstogether.Theme-
ter will display a small resistance value (usually 0.5
ohms or less). This resistance is due to the internal re-
sistance of the meter and test leads. Subtract this value
fromfromthemeasured valueofthecomponent youare
testing.
3.
(ohms setting) as the temperature increases. Replace
sender if specifications are not met.
Check resistance of the sender with a multimeter
Figure 51
COOLANT TEMP TEMP SENDER RESISTANCE
100
160
200
oF (38oC)
oF (71oC)
oF (93oC)
460 ohms (approximate)
140 ohms (approximate)
54 to 78 ohms
221
oF (105oC)
50 ohms (approximate)
4.
After testing is complete, install sender to the water
flange.
A. Thoroughly clean threads of water flange and
sender. Apply thread sealant to the threads of the
sender.
B. Screw sender into the water flange. Torquesend-
er from 16 to 20 ft--lb (22 to 27 N--m).
C. Reconnect gray harness wire to sender. Apply
skin--over grease (Toro Part No. 505--165) to sender
terminal.
5.
Fill engine cooling system.
Groundsmaster 4100--D/4110--D
Page 5 -- 39
Electrical System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Groundsmaster 10177SL, Toro Groundsmaster 30447, Toro Groundsmaster 30449, Toro Groundsmaster 4100, Toro Groundsmaster 4110 D |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Product Brand | Toro. 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 Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
(0 votes, average: 0 out of 5)