500SEL (126.037) V8-5.0L (117.963) (1984)
Expansion Valve: Service and Repair
Data:
Version
-
Thermostatic valve with external pressure compensation
Tightening Torques:
Pressure hose to expansion valve 5/8"
-
15-18 Nm
Suction hose to expansion valve 7/8"
-
29-37 Nm
Evaporator pipeline 3/4"
-
24-28 Nm
Evaporator pipeline 3/4"
-
29-37 Nm
Special Tools:
Open box end wrench with 3/8" square insert
-
17mm 000 589 69 03 00
-
19mm 000 589 70 03 00
-
22mm 000 589 71 03 00
-
24mm 000 589 72 03 00
Note: If considerable contamination is found in the expansion valve, or if the a/c compressor is being replaced, then the expansion valve should also be
replaced. The receiver dehydrator must always be replaced.
Expansion valve (diagram)
a
To evaporator
b
From evaporator
c
From receiver dehydrator
d
To compressor