Textron Ransomes CT445, Operator Instructions Manual

Page: 44 / 74

42
LUBRICATION AND MAINTENANCE
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 is a
heat sensitive valve, shuts off the flow of coolant to
the radiator, thus allowing rapid engine warm up. A
recirculating 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 the
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 7/1 6 to 9/1 6 inch (10 to 15 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
FUEL INJECTOR REMOVAL AND INSTALLATION
The injectors should be cleaned, tested, and
adjusted every 600 hours. Do not disassemble or
adjust the injectors yourself. Remove them from the
tractor engine and have them serviced by your
RANSOMES Tractor Dealer.
WARNING: Fuel oil in the injection
system is under high pressure and can
penetrate the skin. Unqualified persons
should not remove or attempt to adjust
a pump injector, nozzle or any part of
the fuel injection system.
DO NOT use your hand to check for
leaks. Use a piece of cardboard or
paper to search for leaks.
If any fluid is injected into the skin, obtain
medical attention immediately