S 420 (140.043) V8-4.2L (119.981) (1996)
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Remove. See: 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.
