C-84
35 Series 4WD, Model - 3535, 4035, 4535 and 5035 SM June’08
Fig. 7
Cooling System
Fig. 5
1. Radiator
d. Unscrew the generator mounting bolt & nut,
loose the nut, bolt of generator adjustment brace.
Slide oft the generator belt.
e. Loosen the inlet hose clamp which clamps the
hose to the radiator inlet tube and work the hose
free from the tube.
f. Disconnect the battery earth lead.
g. Loosen the outlet hose clamp which clamps the
hose to the water pump and work the hose free
from the pump. Slacken the two hose clips then
remove the thermostat by pass hose.
h. Lift the fan housing clear of the tractor.
i. Remove the nut and setscrew which secures the
adjustable pulley flange to the pulley hub and
unscrew the flange from the hub. Slide off the
drive belt.
j. Unscrew the four nuts (1-7) from the water pump
mounting studs.
k. Withdraw the water pump as far as possible along
the mounting studs and towards the radiator.
7. THERMOSTAT :
The Blocker type Thermostat is located in
Thermostat Housing (2-7). The Thermostat controls
the Engine operating temperature.
When the Engine is cold the Thermostat is closed,
preventing circulation of Coolant until it reaches
operating temperature. The thermostat is set to
open at 82
O
C (180
O
F)
NOTE: When the Thermostat fails in the open position,
the Engine runs too cold. Thereby the Cylinder
Sleeves get glazed, leading to excessive
consumption of Lubricating Oil. A Cold running
Engine is damaged by combustion gas. ‘Blow
by’, Crankcase condensation resulting in sludge
formation in the Oil, High wear and corrosion
of Engine parts and rapid clogging of the
positive Crankcase ventilation system.
Do not to remove the Thermostat
from Tractors for any reason whatsoever except to
replace a defective thermostat.
b. Removal
1. Drain the cooling system.
2. Loosen the clamps on the radiator upper
hose and work the hose clear of the
thermostat housing.
3. Remove the three capscrews (1-12) from the
thermostat housing (2-12) and withdraw the
thermostat.
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