Ransomes CT325, Инструкция для оператора

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41
LUBRICATION AND MAINTENANCE
Figure 53 Radiator Screen
IMPORTANT: Never run the engine when the
cooling system is empty, and do not add cold water
or cold antifreeze solution if the engine is hot.
Thermostat: The thermostat is located in the coolant
outlet connection in the front of the cylinder head,
Figure 54.
When the engine is cold, the thermostat, which i~ a
heat sensitive valve, shuts off the flow of coolant to
the radiator, thus allowing rapid engine warm up. A
recalculating bypass allows the coolant to circulate
within the engine whenever the thermostat shuts off
flow to the radiator.
Figure 54 Thermostat Housing
IMPORTANT: Do not remove the thermostat in an
attempt to improve the cooling. This will cause the
engine to run below normal working temperatures,
resulting in excessive engine wear.
If it ever becomes necessary to install a new
thermostat, it should be positioned in the recess of
the water outlet connection so that the heat element
(spring end) will be in the cylinder head of he
engine.
Fan Belt: A belt-driven fan at the front of the engine
draws air through the fins of the radiator to cool the
coolant in the radiator. A slipping fan belt will lower
the efficiency of the fan, resulting in the engine
running too hot. If the belt is too tight, it will shorten
the alternator bearing life. A correctly tightened belt
will deflect 7/16 to 9/1 6 inch (10 to 1 5 mm) when
20 to 25 pounds (9 to 11 kg) thumb pressure is
applied midway between the belt pulleys. Check the
condition and tension of the fan belt every 200
hours. If the belt shows signs of cracking or fraying,
install a new belt.
To Adjust Belt Tension
1. Loosen the alternator mounting bolts, Figure
55.
2. Pry the alternator away from the engine and
tighten the mounting bolts.
3. Recheck belt deflection.
WARNING: Never attempt to loosen or
tighten the bolts when the engine is
running.
Figure 55 - Alternator Mounting Bolts