Renault F4R - Page 796

19A-29
COOLING
Cooling circuit: Draining - Refilling
F9Q
19A
-the bleed screw (3) of the heater matrix hose,
-the bleed screw (4) of the cooling radiator bottom
hose,
-the bleed screw (5) of the cooling radiator.
a Fill the cooling system with engine coolant recom-
mended by the manufacturer (see 19A, Cooling,
Engine cooling circuit: Specifications, page 19A-
1) and (see Vehicle: Parts and ingredients for the
repairwork) (04B, Consumables - Products) via the
expansion bottle until it overflows.
a Close all the bleed screws as soon as the coolant
starts to flow in a continuous stream.
a Refit:
-the battery tray (see Battery tray: Removal - Re-
fitting) (80A, Battery),
-the battery (see Battery: Removal - Refitting)
(80A, Battery),
a Pressurise the system using the (Ms. 554-07) to
check that there are no leaks (see 19A, Cooling,
Engine cooling circuit: check, page 19A-2) .
a Fill the expansion bottle until it overflows.
a Tighten the expansion bottle cap.
a Clean any surfaces soiled by the coolant.
BLEEDING
a
a
a Disconnect:
- the battery (see Battery: Removal - Refitting)
(80A, Battery),
- the heating element unit connector.
a Connect the battery (see Battery: Removal - Refit-
ting) (80A, Battery).
a Deactivate the air conditioning system so that the
fan assembly is not operating from the start of the
operation.
a Start the engine.
a Maintain the engine speed at 2500 rpm using a pe-
dal press, until the fan assembly starts for the se-
cond time.
a Check that the heating is operating correctly.
a Allow the engine to cool until the coolant temperatu-
re is less than 50˚C.
a Make sure the coolant fluid level is at the
« Maximum » mark.
a Refit the expansion bottle cap.
a Disconnect the battery (see Battery: Removal - Re-
fitting) (80A, Battery).
a Connect:
- the heating element unit connector,
- the battery (see Battery: Removal - Refitting)
(80A, Battery).
FINAL OPERATION
a Remove the coolant draining tray.
WARNING
Do not open the bleed screw whilst the engine is
running; this would damage the engine.
F9Q, and 870
WARNING
Before bleeding the cooling system, it is essential
to deactivate the thermoplungers to avoid irrepa-
rably damaging them.
F9Q, and 870