Cooling G.m.v. Thermocouple Checking (For Pick-Up With C.a.) - Dacia 1304 2004 Repair Manual

COOLING - EXHAUST - FUEL TANK
COOLING G.M.V. THERMOCOUPLE CHECKING
NOTE: The GMV thermocouple may not be repaired ;I t is located on the radiator.
The G.M.V . thermocouple is located on the lateral right side of the radiator, attached on this.
The tightening moment is 5 daNm.
It has a double purpose:
- it controls the engine cooling G.M.V . starting ,by means of a relay, when the temperatur e
of the cooling fluid reaches to 95° C ( stage I ) and its stopping, when the temperature is
lowering under 90° C.
- it controls the uncoupling of the AC compressor if the cooling fluid temperature reaches until
to 105° C ( stage II )and permits its coupling when the temperatur e is lowering under 100° C.
The thermocouple operation is performed in two stages of temperature, as follow:
- stage I ( between the posts B and A) - coupling at 95° C and uncoupling at 90° C.
- stage II ( between the posts ( B and C )- coupling at 105° C and uncoupling at 100° C.
In order to check the correct operation of the thermocou ple, there are necessar y the follo wings:
- a battery (1);
- a cooling fluid vessel (2);
- a thermometer for fluids between 0 – 200° C (3);
- a control lamp (4);
- a heat source.
Make an assembly according to the a.m. diagram.
Heat the fluid in the vessel.
When the liquid temperature reaches to 95 C the lamp , connected between the posts B and
A of the thermocouple should light up and shall remain so, until the temperature is lowering under
90° C.
If the lamp does not light up at the coupling temperature or it remain s lit also after the temperature
lowering, under the uncoupling temperatur e , replace the thermocouple.
the lamp at the posts B and C of thermocouple ; it should light up when the cooling fluid reaches
to 105° C and it remains lit until the temperature is lowering under 100° C. Contrary, replace the
thermocouple.
( for Pick-Up with C.A. )
1 4
19 - 9
3
2
19
Then connect