07.1-500 Vacuum diagrams
Engine 601 with code 620 in model 124
Model years 1987 and 1988
Vacuum circuit diagram exhaust gas recirculation
Y27 | Change-over valve AGR |
Y28 | Change-over valve vacuum control flap |
a | Ventilation to vehicle interior |
b | Key cut-out |
c | Remaining users |
d | Vacuum unit automatic transmission |
Vacuum connections on vacuum transducer | |
VAC | - Vacuum from vacuum pump |
VCV | - To vacuum control valve |
ATM | - Ventilation to vehicle interior |
EGR | - Exhaust gas recirculation to exhaust gas recirculation valve |
1 | Injection pump |
2 | Governor |
4 | Vacuum unit (idle speed increase) |
5 | ADA unit |
6 | Vacuum unit (stop) |
60 | ARF valve |
61a | Choke blue |
61b | Choke orange |
62 | Filter |
62c | Ventilation filter |
65 | Vacuum control valve |
67 | Vacuum pump |
72 | Damper |
99 | Vacuum control flap |
100 | Vacuum unit/vacuum control flap |
123 | Transducer |
128a | Thermovalve closes at approx. 30 °C (green aluminum) |