178
BRAKES
CHECKING THE VACUUM PUMP
Insert the union [2] between the vacuum pump and the braking amplifier.
Connect the tool [1] on the union [2].
Run the engine at idling speed.
Check the vacuum value.
Remove the tools.
Uncouple the vacuum pipe at "a".
Refit :
The screw (2)
The scuttle panel
The wiper motor
The top scuttle panel ventilation grilles
The upper seal between bonnet and scuttle panel
The windscreen wiper arm
The windscreen wiper arm mounting cap
Values to check
NOTE : The vacuum value should be higher than or equal to 0.850 bar.
Engine oil temperature Minimum Maximum time (in seconds)
vacuuml to attain the minimum vacuum
80°C ± 5°C
500 mbar 4,5
800 mbar 18
If the value is outside the tolerance :
Check the vacuum pump directly.
Check the sealing of the circuit on the link pipes as well as on the braking amplifier.
B3F202FD
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