Vacuum Line Layout (EDS)

Vacuum line layout





1 Injection pump
2 Governor
6 Vacuum shut-off unit
60 EGR valve
61b Orifice
61d Connection piece (without orifice)
62 Filter
62a Filter
65 Vacuum control valve
67 Vacuum pump
72 Damper
99 Pressure control flap
100 Pressure control flap vacuum actuator
103 Aneroid compensator (ALDA)
137 Turbocharger
137a Boost pressure control valve vacuum actuator
138 Intake manifold
140 Brake booster check valve

B5/1 Pressure sensor (EDS)
Y22 Electromagnetic actuator, electronic Idle speed control (ELR)
Y27 EGR switchover valve
Y27/4 Boost pressure control switchover valve
Y27/5 Pressure control flap switchover valve
Y31/1 EGR vacuum transducer
Y31/5 Boost pressure control/pressure control flap vacuum transducer

A Firewall
a Vent line to passenger compartment
b Key shut-oft
c Remaining vacuum consumers
e Brake booster

Pressure and vacuum Connections at vacuum transducers
VAC Vacuum from vacuum pump
ATM Vent line to passenger compartment
OUT From vacuum transducer (Y31/1) to EGR switchover valve (Y27)
OUT From vacuum transducer (Y31/5) to switchover valves (Y27/4) and (Y27/5)

sw black
w or ws white
gr grey
br brown
bl blue
tr transparent