300CE (124.051) L6-3.0L (104.980) (1990)
Heater Core: All Technical Service Bulletins
A/C - ACC Production Change
REF.NO. 83/75
TO:
OUR MERCEDES-BENZ PASSENGER CAR DEALERS
DATE:
June 1991
SUBJECT:
MODELS 124 AND 126 MODIFICATIONS OF THE AUTOMATIC CLIMATE CONTROL
A.
MODIFIED WATER FLOW CIRCUIT IN THE HEATER CORE ON MODEL 124
B.
MODIFICATION OF THE COMPRESSOR SHUTOFF ON AUTOMATIC CLIMATE CONTROL, MODELS 124 AND
126
Figure 1
Figure 2
A.
Modified Water Flow Circuit in the Heater Core on Model 124
Since May 1990, a heater core with modified water flow circuit and a new version monovalve (Figure 2) are installed. They guarantee improved removal
of air trapped in the heater core (Figure 1 ).
Effective Serial Number
Model
As of Chassis End Number
124 (except for station wagon)
B249 838
station wagon
F146 108