Grove Published 3-22-2021, Control # 702-02 6-27
GRT8120 OPERATOR MANUAL MAINTENANCE AND LUBRICATION
Turntable (Swing Drive) and Cab Tilt Lubrication – Continued
NOTE 30: Apply grease to six (6) fittings at front of superstructure. Then rotate superstructure 90° and apply grease to
fittings once more. Repeat rotating the superstructure in 90° increments and applying grease to the fittings until
the entire superstructure has made a full rotation.
NOTE 31: The turntable bearing in this crane is lubricated with Cold Weather (arctic) bearing grease capable of ambient
temperatures between -40°C and +49°C (-40°F to +120°F). If operating the crane in regions expecting
sustained winter/cold season temperatures below 15°F, top off bearing grease using Table 6-2, Cold Weather
Lubricants in Arctic Conditions [Down to -29°C (-20°F)]. If temperatures below -9°C (15°F) are rare and
intermittent, then greases from Table 6-1, Standard Lubricants [Down to -9°C (+15°F)], are acceptable.
NOTE 32: DO NOT USE non semi-synthetic lubricant. Use of non-approved lubricant may damage components.
Item
Lube Point
Description
Figure No.
Approved
Lubricant
Approximate
Capacity
Service Interval
Service
Application
CAUTION
Possible Equipment Damage!
Use specified semi-synthetic or synthetic lubricants as listed in this section of your GRT8120
Operator Manual. See also your GRT8120 Service Manual for maintenance and lubrication
instructions.
Use of non-approved, non semi-synthetic lubricant may damage components and/or
invalidate published lubricant intervals.
Failure to follow this instruction may cause damage to equipment.
FIGURE 6-11
10024-08
SIDE VIEW – SUPERSTRUCTURE
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