MV Agusta F4 1000 S, Workshop Manual

Page: 376 / 428

Cooling system
L
- 4 -
COOLING SYSTEM LEAKAGE CHECK
Before removing the radiator and discharging the
engine coolant, check that the cooling system does not
have leakages.
Remove the water radiator cap and connect the tester
(of the type shown in the diagram) to the filler hole.
Do not open the radiator cap whilst the
engine is hot.
Apply a pressure of approximately 120 kPa (1.2
kg/cm
2 ) and check that the system maintains the pres-
sure for at least 10 seconds.
If the pressure diminishes within ten seconds means
that there is a leak in the system.
If so, check the entire system and substitute the defec-
tive/damaged parts.
When removing the tester from the filler
hole, wrap a cloth around the filler hole to
avoid spurts of engine coolant.
Do not exceed the recommended pressure
to avoid damaging the radiator.
WATER RADIATOR CAP CHECK
Check the release pressure of the radiator cap by util-
ising the appropriate tester as follows:
Apply the cap to the tester as indicated and slowly cre-
ate a pressure by activating the tester.
Make sure that the increase in pressure is interrupted
at 110±15 kPa (1.1±0.15 kg/cm
2 ) and check that with
the tester held steady, the pressure is maintained for at
least ten seconds. Substitute the cap if the pressure is
not maintained for ten seconds.
Radiator cap release pressure: 110±15 kPa (1.1±0.15
kg/cm
2
).