15 RADIATOR MAINTENANCE
Even though the radiator is manufactured in a high-quality design and is very
robust, improper handling may significantly reduce the motor performance. For
proper motor cooling, it is important to ensure a sufficient amount of coolant in
the radiator. It is necessary to check the amount of coolant frequently and
regularly.
Level check - take off the radiator cap, and check if the water level is around 1.5
cm away from the filling pipe, which leads down from the radiator. If there is
an insufficient amount of coolant, refill it with fresh clean water.
IMPORTANT:
Never use turbid or salty water for the radiator.
Carefully place the radiator cap back in its place after filling.
After pouring cooling water, the level will drop the first time the motor is
started. Let the motor run for a while, then turn it off and add more coolant.
If there isn't any coolant in the radiator, hose connections and diesel motor, it is
necessary to add about 7 l.
Preventive check against unnecessarily high coolant overflow.
1. Even though the machine is equipped with a cooling air cleaner in the form of
a specially bent radiator grille located in front of the radiator fins, carry out
inspections every week (or more frequently if the machine is operating in a very
dusty environment) to determine whether any dirt has gotten into the radiator
fins. If it has, carefully remove the dirt. Use compressed air (not too close to the
fins), never water. Don't use a spatula, screwdriver or any other tool in order to
prevent damage to the radiator fins.
2. Every day, check if the radiator grille is blocked. If the grille is dirty, you can
dismount it with 2 rubber tensioners after which you can sweep it, shake it off,
rinse it with water or clean it with compressed air.
3. You may tighten the fan's serpentine belt if need be (see page 37).
4. If the radiator tubes are calcified, clean them along with the radiator.
Checking the radiator hoses
After every 200 hours or six months of operation (whichever comes first), check
if the radiator hoses are tightened properly. See service inspection plan.
Antifreeze
If the ambient temperature drops below 0C, it is necessary to add antifreeze.
Two types of antifreeze exist. With this motor you must use the permanent type
(PT). The procedure for mixing water with antifreeze varies by the brand and
ambient temperature. We may generally recommend standard SAE J1034 fluid
or special SAE J814c fluid. It is necessary to mix the water with the antifreeze
before filling the radiator. The maximum proportion of antifreeze is 50 %. In the
factory, the cooling water is mixed with the antifreeze in a 50:50 ratio which
lowers the freezing point of the coolant to -37C.
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