Grove Published 04-04-2017, Control # 446-09 5-3
RT770E OPERATOR MANUAL LUBRICATION
Arctic Lubricants and Conditions
Temperatures Below -9°C (15°F)
Regions with ambient temperatures below -9°C (15°F) are
considered arctic. In general, petroleum based fluids
developed especially for low temperature service may be
used with satisfactory results in these temperatures.
However, certain fluids, such as halogenated hydrocarbons,
nitro hydrocarbons, and phosphate ester hydraulic fluids,
may not be compatible with hydraulic system seals and wear
bands. Therefore, always check with an authorized
Manitowoc distributor or Manitowoc Crane Care if in doubt of
the suitability of a specific fluid or lubricant.
When operating in cold weather and regardless of the oil
viscosity of the crane’s lubricants, always follow the cold
weather start-up and operating procedures described in the
Operator Manual to ensure adequate lubrication during
system warm-up and proper operation of all crane functions.
Cold Weather Package and Lubricants
Manitowoc recommends the following cold weather
lubricants for use with ambient temperatures down to -29°C
(-20°F) (TABLE 5-2) and -40°C (-40°F) (TABLE 5-3). But,
these cold weather lubricants alone are not sufficient to
operate the crane in extreme low temperatures. Therefore, it
is also recommended that the crane be equipped with the
following accessories:
--29°C (-20°F) Package
• Battery heater
• Fuel line heater
• Engine hood insulation
• Fan clutch
• Radiator air shutters
• Air diverter
• Diesel fired cab heater
• Cold weather alternator
• Fluids suitable to -29°C (-20°F)
- Arctic windshield washer fluid
- Arctic fuel
-40°C (-40°F) Package
• Coolant heater (to circulate warm coolant through
heaters and engine)
• Transmission heater
• Swivel heater
• Battery heater
• Fuel line heater
• Hydraulic reservoir heater
• Engine hood insulation
• Fan clutch
• Radiator shutters
• Air diverter
• Diesel fired cab heater
• Cold weather alternator
• Super-capacitor starting system
• Fluids suitable to -40°C (-40°F):
- Arctic windshield washer fluid
- Arctic fuel
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