Thermo-Unit And Thermometer - Yamaha VMX12H Supplementary Service Manual

1
I
COOLING SYSTEM
I -
7-49
2. Inspect:
switch operation
By the following inspection steps.
Thermostatic switch inspectionsteps:
I thermostatic switch in water.
Thermometer
Thermostatic switch
Pocket Tester
continuity as indicated.
Note temperatures while heating the water.
Malfunction Replace switch.
Water Temperature
Step
0 - 98°C
(32-
More than 105
(221.05
105 to 98°C
3"
(221 to 208.4"
I
Less than 98°C
(208.4" F
I
Test 1 2; Heat-up tests
Test 3" 4"; Cool-down
3. Install:
switch
Thermostatic Switch:
15 Nrn (1.5
Three Bond
After replacing the therrnostaic switch, check
the coolant level in the radiator and also check
for any leakage.

THERMO-UNIT AND THERMOMETER

Operation
The thermo unit has less resistance a t higher
temperatures and thus allows more current to
pass through. When more current flows to the
coil in the thermometer, the armature to which
the needle is attached by
field. In this way, the needle indicates the
perature.
Temperature meter
Red zone
Pocket Tester
Discontinuity
3°C
Continuity
I
tests
11
the increased magnetic