New Holland T4.75F Operator's Manual page 198

Flushing the system (models with cab)
4. The heating system uses fluid from the engine cooling
system drawn off between the engine and the radiator.
Flush the system as described for models without a
cab, bearing in mind that the system can be completely
drained by turning temperature adjustment control (1),
fig. 3, to position (A).
Fill the engine cooling system and cab heating system
as follows:
• fill the radiator with a mixture of water and
F ® C
LEETGUARD
screw on the radiator cap;
• close the heater cock (knob (1) in position (A)), start
the engine and leave it running at a medium speed
for approx. 5 - 10 min (this operation is necessary
to preheat the liquid in the engine cooling circuit;
• remove the upper radiator cap, open the heater cock
(knob (1) on position (B)) and allow the engine to run
at maximum speed for approximately five minutes;
• fill the radiator with the engine running at high revs
until it is completely full, and fit the cap.
™ antifreeze fluid and
OMPLEAT
7 - MAINTENANCE
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