OM 25-3503 us – Edition 4.1 * 2503_3503b510.fm 5-7
Maintenance
5.5 Engine and hydraulics cooling system
The oil/water radiator is located in the engine compartment, on the right side of the engine.
It cools the diesel engine, and the hydraulic oil of the drive and operating hydraulics.
The coolant reservoir is also located in the engine compartment, in front of the oil cooler.
Specific safety instructions
• Dirt on the radiator fins reduces the radiator’s cooling capacity! To avoid this:
☞ Clean the outside of the radiator at regular intervals. Use oil-free compressed air (2
bar/29 psi max.) to clean. Maintain a certain distance from the radiator to avoid dam-
age to the radiator fins. Refer to the maintenance plans in the appendix for the clean-
ing intervals
☞ In dusty or dirty work conditions, clean more frequently than indicated in the mainte-
nance plans
• An insufficient coolant level reduces the cooling capacity as well and can cause engine
damage! Therefore:
☞ Check the coolant level at regular intervals. Refer to the maintenance plans in the
appendix for the intervals
☞ If coolant must be added frequently, check the cooling system for leaks and/or con-
tact your dealer!
☞ Never add cold water/coolant if the engine is warm!
☞ After filling the coolant reservoir, make a test run with the engine and check the cool-
ant level again after stopping the engine
• The use of the wrong coolant can destroy the engine and the radiator. Therefore:
☞ Add enough antifreeze compound to the coolant – but never more than 50 %. If pos-
sible use brand-name antifreeze agents since they already contain anticorrosion
agents
☞ Observe the coolant compound table
– see chapter 6.7 Coolant compound table on page 6-9
☞ Do not use radiator cleaning compounds if an antifreeze compound has been added
to the coolant – otherwise this causes sludge to form that can damage the engine
• Once you have filled the coolant reservoir:
☞ Test run the engine
☞ Stop the engine
☞ Let the engine cool down
☞ Check the coolant level again
Use a suitable container to collect the coolant as it drains and dispose of it in
an environmentally friendly manner!
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