Alternatively: Filling coolant
through filler neck
1.
Loosen the vent line union at the distributor
piece (arrow).
2.
Fill in coolant in expansion tank via filler neck
until coolant level at top edge of filler neck
remains constant.
3.
Tighten union (arrowed) if coolant leaks out
at loose union.
4.
Check satisfactory condition of valve cover
on coolant expansion tank, clean sealing
faces if required.
5.
Fit valve cover and close it.
6.
7.
After 10 seconds of running the engine with-
out load, shut down the engine (→ Page 129).
8.
Turn valve cover on coolant expansion tank
counterclockwise to first stop and release
pressure.
9.
Turn valve cover counterclockwise and re-
move.
10.
Check coolant level (→ Page 274) and top up
with coolant through the filler neck if re-
quired:
a) Fill in coolant in expansion tank until
coolant level at top edge of filler neck re-
mains constant.
b) Fit valve cover and close it.
11.
Repeat the steps from “Start engine"
(→ Step 6) until coolant no longer needs to be
topped up.
Final steps
1.
Start engine and run it without load for some minutes.
2.
Check coolant level (→ Page 274) and top up coolant as required.
MS150093/05E 2018-12
| Low-Temperature Circuit | 281
TIM-ID: 0000019867 - 005
