0500 - D. Vacuum Circuit Diagrams Engine 603.96 in Model 124 (J) Model Year 1988

Y29

Vacuum amplifier switchover valve, automatic transmission

Y30

Switchover valve, engine overload protection

Y31/1

Vacuum transducer, exhaust gas recirculation valve

a

Ventilation to passenger compartment

b

Key shut-off

e

Other ancillaries

d

Vacuum unit, automatic transmission

e

Brake booster

Pressure and vacuum connections to vacuum transducer or vacuum amplifier

TRA

To vacuum unit, automatic transmission

VAC

Vacuum from vacuum pump

VCV

To vacuum control valve

ATM

Ventilation to passenger compartment

OUT

Exhaust gas recirculation to exhaust gas recirculation valve or recirculating air valve

1

Injection pump

2

Governor

6

Stop unit

9

Vacuum reservoir

60

Exhaust gas recirculation valve

61a

Restriction

61b

Restriction

62

Filter

62a

Filter

65

Vacuum control valve

67

Vacuum pump

72

Damper

103

ALDA unit

123

Vacuum amplifier

137

Exhaust gas turbocharger

138

Charge air distribution pipe

140

Non-return valve - brake booster

Y22

ELR actuator