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Draining, Flushing and Filling the Cooling System
WARNING: NEVER REMOVE THE PRESSURE
RELIEF CAP WHILE THE ENGINE IS
OPERATING OR WHEN THE COOLING SYSTEM
IS HOT. MAY CAUSE PERSONAL
INJURY OR DAMAGE TO COOLING SYSTEM OR
ENGINE. TO REDUCE THE RISK OF HAVING
SCALDING HOT COOLANT OR STEAM BLOW
OUT OF THE DEGAS BOTTLE WHEN REMOVING
THE PRESSURE RELIEF
CAP, WAIT UNTIL THE ENGINE HAS COOLED
DOWN TO AT LEAST 40°C (110°F).
1. Wrap a thick cloth around the pressure relief cap and turn it slowly one-half turn
counterclockwise. Stepping back while the pressure is released from the cooling system.
2. When you are sure all the pressure has been released, (still with a cloth) turn counterclockwise
and remove the pressure relief cap.
3. Remove the radiator expansion/ degas tank filler cap, then open the radiator drain cock, where
fitted, or detach the bottom radiator hose.
4. Flush the system with water using a hose until clean water emerges and allow all water to drain
out. Close the drain cock (or replace the bottom radiator hose). Recover all old antifreeze and
dispose of properly. Contact your local municipal government for the proper disposal.
5. Fill the system with the correct coolant mixture via the expansion/degas tank filler neck. Fill the
system slowly, to avoid air locks, up to the 'maximum' mark on the degas tank.
6. Run engine and check hose connections for leaks. Check, and, if necessary, top up the coolant
in the radiator or degas tank.
Engine Lubrication System
The lubrication system should be maintained
regularly -- Refer to "RECOMMENDED
MAINTENANCE SCHEDULES" on page 20,
with the correct grade of lubricant as specified
in the maintenance summary -- Refer to
"Recommended Lubricants" on page 21. The
system is of the force feed type, the lubricating
oil being circulated to the engine bearings
under pressure by an oil pump driven from the
camshaft drive chain belt.
The dipstick provides some guide to the
condition of the oil. An additive type of oil keeps
soot in suspension, and even a small amount
of soot causes the oil to darken rapidly.
However, if the dipstick is found to be heavily
coated with sludge, then obviously the oil should be changed.
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