Linhai LH400CUV-2 Service Manual page 188

CHAPTER 8 ELECTRICAL
4.Thermo unit
Drain the coolant and remove the
thermo unit from the cylinder head.
Immerse the thermo unit in the
coolant .
Thermometer.
Coolant
temperature
47.5~56.8Ω
80℃
26.2~29.3Ω
100℃
MEETS SPECIFICATION
8.
Voltage
Connect the pocket tester (DC20V) to
the
Temperature gauge couple.
Tester (+) lead→Green/Blue terminal
Tester (-) lead→Green ground
Turn the main switch to on.
Check
for voltage
temperature gauge lead.
8.
Wiring connection check the
connections of the entire cooling
system.
Refer to ―CIRCUIT DIAGRAM‖
Replace the temperature gauge
Resistance
(12V) on the
CUV SERVICE MANUAL 09.0
Handle the thermo unit with
special care.
Never subject it to strong
shocks or allow it to be
dropped.
Should it be dropped, it must be
replaced.
Do not touch the thermo unit to
the bottom of the heated vessel.
OUT OF SPECIFICATION
Replace the thermo unit
OUT OF SPECIFICATION
The wiring circuit from main
switch to temperature gauge
is faulty. Repair.
POOR CONNECTION
CORRECT
CHAPTER 8 ELECTRICAL CTRICAL PAGE 8- 23