CAUTION
Insufficient coolant can damage the engine.
Insufficient coolant will cause the engine to overheat. Overheating can cause serious dam‐
age to the engine.
➤ Check the coolant level daily.
➤ Top up the coolant as necessary.
Checking coolant level
Check the coolant level of the engine daily before starting.
The coolant expansion tank is located directly above the radiator. The tank is semi-transparent so
the coolant level can be seen from outside. The level should be between marks
A
and
B
when
the engine is cold.
Fig. 23 Checking coolant level
1
Coolant level indicator
A
Maximum
B
Minimum
2
Coolant expansion tank
3
Filler neck with cap
4
Overflow
5
Radiator
➤ Check coolant level.
Top up when the coolant level falls below the minimum level
B
.
Checking the antifreeze concentration in the engine coolant
The coolant is a mixture of clean, fresh water and antifreeze/corrosion inhibitor. For reasons of cor‐
rosion protection and the need to raise the boiling point, the coolant must remain in the cooling sys‐
tem throughout the year. Maximum frost protection is ensured with an antifreeze concentration of
55% volume as frost protection and heat transfer properties deteriorate beyond this point.
The maximum permissible coolant life is 2 years.
10 Maintenance
10.3 Engine
No.: 9_9432 02 E
Service Manual Screw Compressor
M43
73
RAMIRENT
