New Holland 6010 Service Manual page 17

INTRODUCTION
Spot Welding
-see Welding.
Suspended loads
There is always a danger when loads are lifted or suspended. Never work under an unsupported suspended or raised
load, e.g. jacked up vehicle, suspended engine, etc.
Always ensure that lifting equipment such as jacks, hoists, axle stands, slings, etc. are adequate and suitable for the
job, in good condition and regularly maintained.
Never improvise lifting tackle.
Underseal
see Corrosion Protection
Welding
see Fire, Electric Shock, Gas Cylinders. Welding processes include Resistance Welding (Spot Welding), Arc Welding
and Gas Welding.
Resistance welding
This process may cause particles of molten metal to be emitted at high velocity and the eyes and skin must be pro-
tected.
Arc welding
This process emits a high level of ultraviolet radiation which may cause eye and skin burns to the welder and to other
persons nearby. Gasshielded welding processes are particularly hazardous in this respect. Personal protection must
be worn, and screens used to shield other people.
Metal spatter will also occur and appropriate eye and skin protection is necessary.
The heat of the welding arc will produce fumes and gases from the metals being welded and from any applied coatings
or contamination on the surfaces being worked on. These gases and fumes may be toxic and inhalation should
always be avoided. The use of extraction ventilation to remove the fumes from the working area may be necessary,
particularly in cases where the general ventilation is poor, or where considerable welding work is anticipated. In
extreme cases where adequate ventilation cannot be provided, supplied air respirators may be necessary.
Gas welding
Oxy-acetylene torches may be used for welding and cutting and special care must be taken to prevent leakage of
these gases, with consequent risk of fire and explosion.
The process will produce metal spatter and eye and skin protection is necessary.
The flame is bright and eye protection should be used, but the ultra-violet emission is much less than that from arc
welding and lighter filters may be used.
The process itself produces few toxic fumes, but such fumes and gases may be produced from coatings on the work,
particularly during cutting away of damaged body parts and inhalation of the fumes should be avoided.
In brazing, toxic fumes may be evolved from the metals in the brazing rod, and a severe hazard may arise if brazing
rods containing cadmium are used. In this event particular care must be taken to avoid inhalation of fumes and expert
advice may be required.
Special precaution must be taken before any welding or cutting takes place on vessel which have contained com-
bustible materials, e.g. boiling or steaming out of fuel tanks.
White spirit
See solvents
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