Component Description For Exhaust Gas Recirculation Controller - Mercedes-Benz OM 471 Introduction Into Service Manual

System components
GF14.20>W>4007H
ENGINE 471.9 in MODEL 963, 964
Location
1 Exhaust gas recirculation cooler
2 Exhaust manifold center section
3 Exhaust gas recirculation pipe
4 Throttle valve
Y621 Exhaust gas recirculation positioner
Task
The exhaust gas recirculation positioner
(Y621) regulates the volume of recirculated
exhaust gas through deflection of the
throttle valve (4).
Design
1 Exhaust gas recirculation cooler
4 Throttle valve
5 Coolant line
6 Coolant line
7 Actuator rod
8 Lever
9 Electrical line
10 Control lever
Y621 Exhaust gas recirculation positioner
The exhaust gas recirculation positioner
(Y621) consists of a housing, which has a coil
inside and a mechanism for moving the
adjusting lever (10) for the throttle valve
(4).
The component is supplied with coolant
from the engine's coolant circuit through a
duct.
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Component description for exhaust gas recirculation controller

– This printout will not be recorded by the update service. Status: 09 / 2011 –
20.7.11
W14.20>1025>76
W14.20>1026>76