S 500 Sedan (140.051) V8-5.0L (119.970) (1994)
Remove. See: Heating and Air Conditioning/Blower Motor/Service and Repair
Pipes on heat exchanger
Close, screws (23) and assemble with new O-rings.
Heat exchanger (22)
Release (screws 21).
Heat exchanger (22)
Remove.
Heater housing
Clean from inside, remove any coolant which may have escaped.
Install
In reverse sequence.
Coolant level
Correct.