5.10 Cooling system
1 Connection, LT circuit vent
line
2 Connection, HT circuit vent
line
3 Space heater supply con-
nection
4 Space heater return con-
nection
5 Engine coolant outlet to en-
gine coolant cooler
6 Engine coolant cooler
7 Engine coolant inlet from
engine coolant cooler
8 Charge-air coolant outlet to
charge-air coolant cooler
9 Charge-air coolant cooler
10 Charge-air coolant inlet
from charge-air coolant
cooler
11 Charge-air coolant pump
12 Charge-air coolant drain
plug
13 Charge-air coolant expan-
sion tank, LT
14 Engine coolant expansion
tank, HT
15 Engine coolant pump
16 Engine coolant drain plug
17 Restrictor
18 Lube oil heat exchanger
19 Crankcase
20 Engine coolant preheater in-
let
21 Coolant manifold
22 Intercooler
23 Engine coolant preheater
outlet
24 Thermostat, HT circuit
25 LT thermostat
P = Pressure measuring point
T = Temperature measuring
point
Technical data
• Two separate cooling circuits:
– Engine coolant HT (high-temperature)
– Charge-air coolant LT (low-temperature)
• External coolant cooling by:
– Electrically driven cooling fans
– Mechanically driven fan cooler
– Water/water heat exchanger (e.g. plate-core heat exchanger)
• Thermostat-controlled coolant circuit
• Coolant-cooled / preheated charge-air
MS15060/01E 2018-12
| Functional Description | 59
TIM-ID: 0000083355 - 001
