This is the official procedure for Draining, Filling & Degassing:
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Tool for filling the cooling system by vacuum | Bayonet filling cylinder | Adaptor / extension for bayonet filling cylinder [0173] |
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Blocking Rod for Filling Cylinder | Screw-fit Filling Cylinder (without extension) | Cable Pliers for Flexible Clips |
Draining the cooling system
CAUTION: The draining operation is carried out with the engine cold.
Put the vehicle on a hoist.
Remove:
- The protective panel under the engine (according to equipment)
- The de-aeration chamber plug (Carefully)
N.B.: Place a clean tray underneath the engine to recover the coolant.
Uncouple the pipe (1) (at "a"); Using tool [0165-2].
- Open the bleed screws located on the coolant outlet housing and the heater pipe.
- Allow the coolant to run out.
- Drain the cylinder block (if necessary).
CAUTION : If the tool for filling the cooling system by vacuum [01102] is used, measure the quantity of coolant drained.
Filling the cooling system
CAUTION:
- If the cooling system is contaminated, rinse with clean water.
- Always use new coolant.
- Each filling operation must always be followed by a cooling system degas operation.
Filling the cooling system by gravity
Connect the hose (1) (at "a"); Using tool [0165-2].
N.B.: Refit new clips.
"A" : Fitting with filling cylinder offset; Using the tools [0173], [0173-B], [0173-C].
"B" : Fitting with filling cylinder direct; Using tool [0173-2].
- Fit the filling cylinder, blank and adaptor assembly on the expansion chamber (according to assembly).
- Open the rod on the filling cylinder.
- Slowly fill the cooling system with clean coolant.
- Close the bleed screw when the fluid is flowing freely without any air bubbles.
N.B.: The filling cylinder should be filled to the 1 litre mark for correct bleeding of the heater matrix.
Filling using the tool for filling the cooling system by vacuum
CAUTION: Always use new coolant.
Connect the hose (1) (at "a") ; Using tool [0165-2].
N.B.: Refit new clips.
- Close the bleed screw.
- Put the equipment for filling by vacuum [01102] in place on the expansion bottle.
CAUTION: To avoid entry of air into the circuit, provide for 20 % additional coolant.
Prepare a receptacle of coolant containing the quantity of fluid drained + 20 %.
N.B.: The receptacle must be positioned slightly lower than the equipment for filling by vacuum.
- Place the cooling circuit under a vacuum to reach -0,9 bar (diagram "C"):
- Wait 10 seconds and check that the value obtained does not drop
- Fill the cooling circuit completely and wait for the return to 0 bar (diagram "D")
N.B.: The quantity of coolant filled should correspond to the quantity of fluid drained.
Repeat the operation until the cooling system is full (if necessary).
CAUTION: Remove the equipment for filling by vacuum [01102] and rinse the assembly with clean water.
Degassing and Checking the Cooling System
- Fit the charging cylinder, closer and adaptor assembly on the expansion bottle, in the case of draining using the tool for filling by vacuum [01102].
- Open the rod on the filling cylinder.
- Start the engine.
N.B.: The air conditioning control should not operate during this phase.
All Engines Except EURO 6 Emission Standard
Keep the engine speed at 1500 - 2000 rpm, up to the second cooling cycle (cooling fan(s) cutting in and out).
CAUTION: Check that there are no coolant leaks.
Stop the engine.
ESSENTIAL: Do not remove the filling cylinder while the engine is hot.
- Leave the engine to cool.
- Blank the filling cylinder using the blocking rod .
- Remove the filling cylinder , plug and adapter assembly.
- Check the coolant level when cold.
- Top up the coolant to the "max" level (Cold).
CAUTION: Do not fill the system past the max mark.
- Refit and tighten the cap on the header tank.
CAUTION: Check that the cooling system filler cap is locked (For bayonet cap).
Refit:
- The protective panel under the engine (according to equipment)
- The vehicle to its wheels