A. Check Valve (36) and Vacuum Reservoir (37) for Leak
A. Checking check valve (36) and vacuum reservoir (37) for leaks (except with diesel engine)1 Loosen check valve holder.
2 Disconnect vacuum line medium green/yellow and on the gasoline models, additionally vacuum line red/green, from the check valve (36).
3 Connect tester (arrow) to the check valve. On the gasoline models, close the second connection with the dummy plug.
4 Evacuate with the tester and read the vacuum of the gauge. If the pressure rises on the pressure gauge, renew check valve.
5 Pull off vacuum line red/grey from the check valve (36) and connect tester (arrow) to the vacuum line (not with the diesel).
6 Evacuate with the tester and read the pressure of the gauge.
7 If the pressure gauge indication changes, remove the reservoir (37) and check for leaks, renew if required or renew vacuum line red/grey.
Arrangement, vacuum reservoir (37) under front fender left (only gasoline models)