Various Controls - New Holland T4.75F Operator's Manual

Various controls

Check the following components regularly and, if any
faults are detected, contact your dealer and replace the
damaged parts as necessary:
• Steering linkage ball joints: check that there is no play
in the ball joints and that the conical ends are securely
in place; also check no grease is escaping from the
protective hoods to the ball joints, and that the hoods
are in good condition and show no signs of cracks.
• Hydrostatic steering cylinder lines: the lines must not
show signs of crimping, cracking or swelling of the ex-
ternal sheath; there must be no traces of oil between
the pipe and the connector;
• Handbrake lever: check that the ratchet locks securely.
Engine Cooling systems
It is advisable to change the coolant every two years,
even if the total working time of 1200 hours has not been
reached.
Radiator
If the cooling circuit is to work properly, it is important that
the radiator fins are not clogged.
Clean them regularly, even several times a day if the en-
vironment in which you are working is particularly dusty.
7 - MAINTENANCE
Tires
Always fit and remove tyres in perfectly clean conditions.
Avoid working on the ground.
Do not use grease when fitting and removing tyres. Use
a soap and water solution instead.
When fitting a new or used tyre, inflate it to 3.5 bar
(50.8 psi) to ensure the correct positioning of the bead.
Then inflate the tyre to its service pressure.
Tyre pressures
The recommended tyre pressures are given in this man-
ual in specific tables.
Remember that the values given may differ depending on
the following factors: tyres different from those fitted by
the manufacturer, tractor ballast type, different conditions
of use, etc.
The tyre manufacturer should be able to help you decide
on the most suitable pressures. Do not forget to check
the tyre working pressures regularly.
The frequency of such inspection will vary depending on
operational and climatic conditions.
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