Bearings - New Holland TI4.70 RS Service Manual

1.6.3 Bearings

1.6.3.1 Introduction
Expertise and maintaining cleanliness are the two most important factors when installing bearings to
ensure that the bearings function correctly and to prevent premature bearing failure. Bearings should be
installed in a dust-free, dry place away from machining tools or machines which produce dust.
1.6.3.2 Preparing for assembly
1 - Before installing a bearing, ensure that all the parts, tools and equipment needed are at hand, and that
all parts are arranged in the same order in which they will be installed, as indicated in the instructions
or drawings.
2 - All parts involved in the installation of a bearing (seats, shafts etc.) must be thoroughly cleaned to
remove all machining residue. The unfinished inner surfaces of cast iron housings must be free of
any casting sand residue. Before installation, check the dimensions and forms of all bearing-related
components. Bearings will only work correctly if the specified tolerances are observed.
3 - To prevent contamination with foreign objects, only remove bearings from the original packaging
immediately before fitting.
4 - Usually, the anti-corrosion coating applied to the cylindrical outer surface and the inner hole of new
bearings before they leave the factory must be removed before installing
If it is necessary to lubricate a bearing with a special grease for very high or very low temperatures,
wash and dry the bearing before application to prevent any loss in the temperature resistant properties
of the grease used.
5 - Any bearings contaminated by improper handling (damaged packaging etc.) must also be washed and
dried before installing. Bearings which are coated in a thick and greasy layer of corrosion inhibitor
product when removed from their original packaging must be washed and dried before installation, as
this coating has been applied with a hot-dip bath (a method still used for large bearings in particular).
Bearings shipped ready-lubricated and with sealed or protective shielding on both sides must NOT be
washed before installation.
1.6.3.3 Assembly
1 - Never hit the shell, race or rotating elements of a bearing directly during installation, as this will damage
the bearing itself. Never apply pressure to one bearing shell to facilitate installation of another bearing
shell. Lubricate the surfaces of the bearing seats lightly with oil before installing bearings.
Never hit the shell, race or rotating elements of a bearing directly during installation, as this will damage
the bearing itself. Never apply pressure to one bearing shell to facilitate installation of another bearing
shell. Lubricate the surfaces of the bearing seats lightly with oil before installing bearings.
INTRODUCTION
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