9
HOSES AND FITTINGS
Care must be exercised in the use of hose and fittings for use on hydraulic tools, especially in
confined areas. Any obstruction or abrasive surrounding could damage the hose and cause a
serious accident. Always use the recommended hose for the tool that is being used. Always consult
the dealer or distributor for the correct hoses and purchase from him to ensure, from a safety
standpoint that the materials used in the manufacture of the hoses is to the correct specification
for the application. Fittings must meet the standards established by the industry to adequately
assure safety. Poor quality or low rated fittings are not to be used. They invite a serious accident.
Length: Hose must be the correct length for the general use of the tool or for the specific
function it is to provide. Pressure surge is an important factor in the selection of hoses. The
hose should be rated above the expected surge pressure to ensure adequate safety. Hoses
that are too long will have a tendency to coil, kink, or move in multiple directions creating a
safety hazard. Hoses that are too long will rub or chafe against the ground or projecting
objects, seriously shortening the life of the hose. It may be advisable to carefully restrain a
hose which is temporarily too long for the current application. Pressure surge can cause
whipping, and seriously damage the hose. Always keep the hose length as short as possible
for the operation which is it intended.
Size: The hose must be large enough to carry the pressurized flow of fluid to the end
application without creating undue heat generation or excessive turbulence. These factors
could cause excessive wear to the hose from any or all of the above reasons.
Pressure: Hose selection must be made so that the recommended maximum operating
pressure is greater than the system pressure. A surge or sudden drop in pressure will cause
the hose to deteriorate faster if the maximum pressure of the hose is significantly below the
surge pressure. A hose with a top rate of pressure as the line pressure of the installation is
not an accepted safety practice. Always err on the side of safety.
Temperature: Hose can be seriously damaged by passing over or near hot objects. Avoid
any situation that will heat the hose. Serious damage and/or failure will occur.
Unusual Applications: Careful thought and research should precede installation of hoses. Thorough
and protected testing, with appropriate safety guards, must be done to avoid injury before general use.
Connections: Hoses must have the proper end fittings in order to mate correctly with
connectors. Worn or damaged connectors and worn end fittings on the ends of the hose
can cause a failure. Pressure surge can cause a slow or sudden failure at the connection
causing serious damage or injury.
Safety Check: Before using any installation, perform a thorough checkout to determine if
any of the above or unforeseen problems occur. Initial testing with safety guards is an
invaluable safety precaution.
Always consult the distributor or manufacturer for the correct specifications regarding any of the
items discussed above. The correct hoses and fitting are available from your supplier.
There exists the potential for SHOCK in using anything other than certified
non-conductive hoses and hydraulic oil with dielectric properties when using
system components near ENERGIZIZED ELECTRICAL LINES. Failure to
recognize these conditions could cause ELECTROCUTION.
Hoses and fittings used with this tool must comply with S.A.E. J1273
recommended practice for selection, installation, and maintenance
of hose assemblies.
FAILURE TO COMPLY WITH THESE WARNINGS COULD RESULT IN SEVERE BODILY INJURY.
WARNING
