Schwing SPB 28, Operation Manual

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Maintenance
SPB Operation Manual
Hydraulic Oils
General information
Hydraulic oils are rated for viscosity, heat dissipation,
foaming characteristics, pour point, anti-wear additives,
anti-corrosive additives, lubricating qualities, compress-
ibility, temperature range, temperature stability, and oth-
er functions. Although many different brands of oil meet
these specifications, they may use different chemical
additive packages to achieve the end result. For this
reason, you should not mix two different brands of oil.
The additive package from one brand may be incom-
patible with the additive package from the other, render-
ing both packages useless.
Recently a few manufacturers have introduced biode-
gradable hydraulic oils onto the market. These oils are
based on vegetable extracts instead of mineral extracts.
They are considered safer for the environment in the
event of a spill, although the additive packages are not
inert. These oils must not be mixed with mineral-based
hydraulic oils, even in very small amounts. If you will be
pumping a job in an environmentally sensitive location
and want to use this type of hydraulic oil, please contact
the Schwing Service Department at (888) 292-0262 for
instructions on making the change from mineral oil. Ref-
erence ISO 15380 for more information.
Viscosity of hydraulic oil is similar in concept to the dif-
ferent weights of motor oil. For example, in the winter
you may run 5W-30 in your car, while in the summer you
run 10W-40. The same is true for hydraulic systems. If
you live in a climate where the weather is changing from
extremely hot conditions to extremely cold conditions,
you should consider changing the weight of the hy-
draulic oil that you use by the season. The International
Standards Organization (ISO) has developed a meth-
od of grading hydraulic oils for viscosity. For summer
in northern North America, we recommend ISO VG 46
weight oil, while in the winter we recommend ISO VG
32 or even VG 22, depending on how cold it gets in your
area. For southern North America and Central America,
we recommend ISO VG 46 for the winter and ISO VG
68 or VG 100 for the summer, depending on how hot
it gets. The lower the ISO VG number the thinner the
oil and the lower the pour point of the oil. On the other
hand, the thinner the oil, the lower the temperature will
have to be before it breaks down the lubricating film that
protects your components.
The quality of the oil needed for use in a Schwing con-
crete pump is in the DIN system. The ratings have to do
with the chemical additive package that is introduced
into the oil. Both the DIN rating HLP and HV qualities
are approved for use in our concrete pumps.
Specific information
New Schwing factory equipment is filled with Texaco
Rando HD 46 hydraulic oil, which has an ISO viscosity
rating of VG 46. If you want your new concrete pump
filled with a different brand or different viscosity oil, you
should specify it when ordering.
Many other brands of oil have been approved for use in
Schwing equipment, including:
• Mobil Univis
• Shell Tellus oil
• BP Energol
• Aral Vitam
• Esso Nuto
• Esso Univis
• Total Azolla
• Wintershall Wiolan
The order of the brands listed is not significant. Any
oil that meets the quality and viscosity standards de-
scribed above can be used.
Filter all new oil to meet ISO 4406 18/16/13.
“Industrial” gear lubricant codes
CLP
- An “industrial” gear lubricant oil with additives to
improve corrosion protection, aging stability, and pro-
tection against wear in areas with many types of friction,
and to increase gear stability under load. Meets DIN
51517.
Vehicle gear box oil codes
GO 90
- BI standard lubricant, a gear box oil that meets
API-GL 5.