Dacia Pick-Up 1304/1305/1307. Service manual - part 44
19
COOLING - EXHAUST - FUEL TANK
19 - 5
1.CHECKING OF THE CIRCUIT TIGHTNESS
Mount the MS 554 device instead of the radiator plug.
Open the heating tap.
Warm the engine till the thermostat opens.
Clamp the radiator - expansion vessel hose by means of the MOT 453 device.
By means of the MS 554 device,pressure is created in the circuit,the value of the
pressure being 0,1 bar higher that the value marked on the expansion vessel valve
( 0,8 +/- 0,1 bar ).
The pressure must not go down.
If the pressure in the circuit is going down,check : - the tightness of the rings;
- the radiator;
- the water pump;
- the cylinder head.
Lock the pump heating radiator ducts.
Create pressure in the circuit:
- if the pressure is not decreasing,it means that heating radiator is defective; check it
and replace it if required;
- if the pressure is decreasing,dismount the oil sump,create pressure in the circuit
and check if there are any fluid leaks at the bottom of the jackets; if there are any
leaks,replace the gaskets form the bottom of the jackets and if there are not leaks,replace
the cylinder head gasket.
Decompress the circuit,dismount the MOT 453 clamping device and MS 554 device.
Check and refill with fluid the expansion vessel up to required level.
CHECKING OF THE COOLING CIRCUIT TIGHTNESS AND TAR
RING OF THE EXPANSION VESSEL VALVE
CONTROL