40
LUBRICATION AND MAINTENANCE
GENERAL MAINTENANCE
COOLING SYSTEM
The cooling system in your SHIBAU RA Tractor has
been filled with one year life antifreeze
To obtain maximum efficiency and service life from
the engine, it must operate at the correct
temperature. This is dependent on the cooling
system. The system should be kept filled with a 50/
50 solution of permanent antifreeze and clear water.
Checking Coolant Level: Check the coolant level
daily or 10 hours. This check should be made when
the engine is cold.
1. Remove the radiator cap and visually check
the level of the coolant.
WARNING: The cooling system
operates under pressure which is
controlled by the radiator cap. It is
dangerous to remove the cap while the
system is hot. Always cover the cap
with a thick cloth and turn the cap
slowly counterclockwise to the first
stop. Allow all pressure to escape
before removing the cap completely.
2. If the coolant level is more than 1-1/2 to 2
inches (3.8 to 5 cm) below the bottom of the
filler neck, add clean water or antifreeze
solution as necessary. If the cooling system
already contains antifreeze, add only
antifreeze solution of the correct water/
antifreeze mixture. Plain water will dilute the
solution and weaken its protection.
IMPORTANT: Alcohol-type antifreeze is not
recommended. Do not mix alcohol-type
solution with permanent antifreeze.
3. Keep the radiator fins clear of chaff or dirt to
allow free passage of air.
Draining and Flushing the Cooling System:
Drain and flush the radiator and engine block every
1 2 months. Refill with a 50/50 mixture of long life
antifreeze, or equivalent, and clear water.
To Drain the System
1. Remove the radiator cap and open the drain
valve along R.H. tractor frame. This valve will
drain radiator and engine block, Figure 52.
2. After the coolant has drained, place a water
hose in the radiator filler neck and run water
through the system with the engine running.
Make sure water is flowing from the block
drain valve before starting the engine. When
the water flowing from the drain valve is free
of discoloration and sediment, stop the engine
and remove the hose. Allow all water to drain
from the system through drain valves.
Figure 52 - Combination Engine Block and
Radiator Drain Valve
3. Close the drain valve and slowly refill the
system with a 50/50 solution of permanent
antifreeze and clear water. Fill until the
coolant level is approximately 1-1/2 to 2
inches (3.8 to 5cm) below the bottom of the
filler neck. Do not fill beyond this level.
4. Clean the radiator cap and cap seal. Install
the cap.
5. Clean the radiator front screen, Figure 53.
6. Run the engine until normal operating
temperature is reached, then stop the engine
and recheck the coolant level after the engine
is cold. Add coolant as required.
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