Engine
SHOP MANUAL MT26-31 - 06.2005
Tier-3 710655-
Ch 1 page 137
Removing oil and grease
- If possible, run the engine until it has reached the operating
temperature and then drain the cooling system.
- Remove the thermostat.
- Fill the system with clean, hot water mixed with liquid
dishwasher detergent intended for household use.
Concentration 1% (0.1/10 l).
- Run the engine until warm for about 20-30 minutes. Do not
forget the cab heating system (if fitted).
- Drain the cooling system.
- Fill the system again using clean, hot water and run the
engine for approximately 20-30 minutes.
- Drain the water from the system.
- Refit the thermostat.
- Fill up with new coolant according to the specification on
page 33.
Removing deposits
- If possible, run the engine until it has reached operating temperature
and then drain the cooling system.
- Remove the thermostat.
- Fill the system with clean, hot water mixed with a commercially
available radiator cleaner based on sulphamic acid and containing
dispersing agents. Follow the manufacturer’s instructions for mixing
proportions and cleaning times.
- Run the engine for the specified time and then drain the cooling
system.
- Refill the system with hot water and run the engine for approximately
20-30 minutes.
- Drain the water from the system.
- Refit the thermostat.
- Fill up with new coolant according to the specification on page 33.
Internal cleaning
Always collect fluid in a
suitable container to avoid
spillage when draining
coolant.
Dispose of used coolant
through an authorized
waste disposal contractor.
Handling cleaning agents
for the cooling system:
Read the warning label on
the container.
Radiator
- Check that the radiator is not clogged on the air side and
that the cooling fins are not damaged.
- Carefully scrape the deposit off the radiator’s cooling fins.
If necessary, a paraffin-based engine cleaner can be used.
- Bent fins can be straightened using a wire brush, for example,
and exercising care.
External cleaning
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