Moxy MT 26, Manual

Page: 128 / 170

SHOP MANUAL MT26-31 - 06.2005
Engine
Tier-3 710655-
Ch 1
page
18
From the pump, the coolant is carried into the cylinder block’s longitudinal distribution ducting and then through
holes in the cylinder block, washes round the cylinder liners and flows up to the cylinder heads.
The coolant is also forced directly up into the cylinder heads from the distribution ducting via passages which
leads to the injectors and exhaust valves.
From the engine’s rear cylinder head the coolant flows forward through the pipe directly into the thermostat
housing, which is located on the left-hand side of the radiator shield.
The by pass in the thermostat housing forwards the coolant which is under the temperature limit for the ther-
mostat, back to the engine through the transmission cooler. The coolant which needs to be cooled, are going
through the open thermostat and to the radiator cooler system, through the transmission cooler and back to the
engine, where the coolant pump is circulating the coolant in the system.
The cab heater takes the heat coolant from the pipe line on the left-hand side of the engine, and after heating
the cab, the returned coolant is going to the transmission cooler.
The inlet air to the engine, is by the turbo compressor forced through the charge air cooler. The hydraulic driven
fan are also feeding the air through the air charge cooler and cools the air from the turbo compressor.
The pressure of the air, in the air charge system, to the cylinders is approx 1 - bar, depend on the engine’s
rpm.
Circulation
View of the radiator system
Thermostat
housing
Radiator
shield
Air condition
condenser
Transmission
cooler
Charge
air cooler
Engine
cooler
4
5
3
6
1