Derbi Rambla 250 Manual page 223

Cooling system
Filling
•
Reposition the coolant delivery pipe
and tighten with a clamp.
•
Remove the central inspection cover
(SEE TAIL).
•
Remove the rubber cap «1» of the
bleed screw of thermostat «2» and fit a
hose. The other end of the hose should
be fitted into in a container.
•
Top-up the expansion tank with cool-
ant until the fluid level reaches the
"MAX" reference mark.
•
Open the bleed valve so that air is re-
leased and coolant can be topped-up.
•
Close the valve and continue refilling
up to the "MAX" reference mark.
•
Run the vehicle until it warms up.
•
Shut off the engine, bleed again and
top-up.
•
Refit the central inspection cover.
Locking torques (N*m)
Fixing the radiator/pump hose clamps
System bleed
- Start the engine until the operating temperature
is reached
- Remove the bleed valve rubber cap
- Use a rubber hose of suitable length to connect
the valve to the expansion tank
- Place one end of the hose on the bleed valve and
the other in the expansion tank
- Loosen the screw by two turns until the commu-
nication hole (photo) with the head can be seen
- Wait until only coolant comes out through the
rubber hose so as to eliminate any air bubbles in-
side the circuit.
3 (2.2 ftlb)
COOL SYS - 223