MAINTENANCE SECTION 5
Page 27
DRESSTA OM560C99/1E
COOLING SYSTEM
WARNING! Never add coolant when the engine is hot. This may result in damage
to the engine. Allow the engine to cool down below 50
C prior to replenishing
the coolant in the radiator. Failure to meet this recommendation may result in
personal injury.
5.8.6. DRAINING THE SYSTEM
WARNING! To drain the coolant allow the coolant to cool down below 50°°C.
Failure to meet this recommendation may result in personal injury.
1. Remove the radiator cap (Figure 5.17) as outlined above.
2. Remove castellated nut protecting the automatic valve shown in Fig. 5.19. Install the drain hose
(included in the machine accessories) on the open thread. The drain valve will be opened
automatically as the hose nut is thread in.
3. Open the coolant drain valves on the engine, refer to Engine Operation and Maintenance
Manual)
4. Allow the system to drain completely.
5. Remove the drain hose and install the castellated nut on the drain stub and shut the drain valves
on the engine.
6. Turn fully to the right the heater temperature control knob 32 in the cab to drain the coolant from
the heater. Refer to INSTUMENTS AND CONTROLS.
Fig. 5.19. Radiator Drain Plug
5.8.7. CLEANING THE SYSTEM
NOTE: If necessary, clean the cooling system in accordance with the instructions of Engine
Operation and Maintenance Manual and the cleaning compound’s manufacturer.
5.8.8. REPLACING THE COOLANT FILTER
GENERAL
The coolant filter is a spin-on type filter. This filter cannot be cleaned and should not be disturbed
except when it becomes necessary to replace it.
The proper coolant filter to be applied depends upon the total capacity of the cooling system and
operating conditions of the engine, refer to Engine Operation and Maintenance Manual.
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