0500 - B. Vacuum Circuit Diagrams Engine 603.96 in Model 124

Y22

ELR actuator

Y29

Vacuum amplifier switchover valve, automatic transmission

Y30

Switchover valve, engine overload protection

a

Ventilation to passenger compartment

b

Key shut-off

d

To vacuum unit, automatic transmission

Pressure and vacuum connections on vacuum transducer or vacuum amplifier

PRE

Charge pressure

TRA

Transmission

VAC

Vacuum

VCV

Vacuum control valve

1

Injection pump

2

Governor

6

Vacuum unit stop

9

Vacuum reservoir (in right front wheelhouse behind plastic cover)

61a

Restriction

62

Filter

65

Vacuum control valve

67

Vacuum pump

72

Damper

103

ALDA unit

123

Vacuum amplifier

137

Turbocharger

138

Charge air distributor