V40 L4-1.9L Turbo VIN 29 B4204T3 (2002)
Blow or suck in the connection to the brake booster.
If it can be blown, it is OK.
If it cannot be sucked, it is OK.
Fit the control valve on the brake booster.
Remove the vacuum line at the induction pipe (press in the plastic ring towards the induction pipe and pull out the line).
Blow or suck in the line.
If it cannot be blown, it is OK.
If it can be sucked, it is OK.
Fit the vacuum line on the induction pipe.
Remove the quick coupling at the vacuum pump.
Blow or suck in the line.
If it cannot be blown, it is OK.
If it can be sucked, it is OK.
Fit the vacuum line's quick coupling on the vacuum pump.
Check
Start the engine and check that the brake booster receives a negative pressure.
Brake repeatedly and listen to hear if the vacuum pump starts.