Preparatory steps
1.
Turn valve cover on coolant expansion
tank (1) counterclockwise until the first stop
and release pressure.
2.
Continue to turn valve cover (1) counter-
clockwise and remove.
Variant 1: Filling coolant with
pump
1.
Connect suitable pump with hose to drain
valve (1).
2.
Loosen vent line union at distributor (1).
3.
Open drain valve and pump coolant into en-
gine at 0.5 bar minimum.
4.
Tighten union (arrow) if coolant escapes at
loose union.
5.
Fill expansion tank until overflow edge is
reached.
MS15058/04E 2018-12
| Low-Temperature Circuit | 189
TIM-ID: 0000068727 - 007
Summary of Contents for 20V4000G44F
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