Note:
An empty engine must always filled with coolant from below, i.e. using the drain valve connection of the en-
gine coolant pump.
Filling with coolant from below
using a pump
1.
Connect appropriate pump with hose to drain
valve of engine coolant pump (arrow).
2.
Loosen vent line union at distributor (arrow).
3.
Open drain valve and pump coolant into en-
gine at 0.5 bar minimum.
4.
Tighten union (arrow) if coolant leaks out at
loose union.
5.
Fill expansion tank until coolant level reaches
overflow edge.
6.
Close drain valve and use torque wrench to tighten to specified tightening torque.
Name
Size
Type
Lubricant
Value/Standard
Spindle
A/F11
Tightening torque
12 Nm
7.
Check satisfactory condition of valve cover on coolant expansion tank, clean sealing faces if required.
8.
Fit valve cover and close it.
9.
10.
After 10 seconds of running the engine without load, shut down the engine (→ Page 129).
11.
Turn valve cover on coolant expansion tank counterclockwise to the first stop and release pressure.
12.
Continue to turn valve cover counterclockwise and remove.
13.
Check coolant level (→ Page 252) and top up coolant as required:
a) Fill in coolant in expansion tank until coolant level at top edge of filler neck remains constant.
b) Fit valve cover and close it.
14.
Repeat the steps from "Start engine" (→ Step 9) until coolant is no longer needed to be topped up.
15.
Disconnect pump and hose.
MS150093/05E 2018-12
| Coolant Circuit, General, High-Temperature Circuit | 257
TIM-ID: 0000019863 - 007
