MAINTENANCE AND LUBRICATION GRT8120 OPERATOR MANUAL
6-26 Published 3-22-2021, Control # 702-02
Item
Lube Point
Description
Figure No.
Approved
Lubricant
Approximate
Capacity
Service Interval
Service
Application
Turntable (Swing Drive) and Cab Tilt Lubrication
40
Turntable (Swing
Drive) Gearbox –
Brake Assembly
Figure 6-11 H
0.3L (0.63pt)
each gearbox
After first 50 hours
of service
Thereafter, every
50 hours of service,
or 1 week, whichever
interval comes first
CHECK oil level
FILL swing drive
gearbox brake
assembly to
TOP of ELBOW
1 service point
See NOTE 28.
After first 50 hours
of service
Thereafter, every
1000 hours, or
12 months,
whichever interval
comes first
DRAIN swing drive
gearbox
FILL swing drive
gearbox brake
assembly to
TOP of ELBOW
1 service point
See NOTE 28.
41
Turntable (Swing
Drive) Gearbox
Figure 6-11 B 4.14 L (4.4 qt)
After first 50 hours
of service
Thereafter, every
50 hours of service,
or 1 week, whichever
interval comes first
CHECK oil level
FILL swing drive
gearbox to
BOTTOM of
FILL HOLE
1 service point
See NOTE 29.
After first 50 hours
of service
Thereafter, every
1000 hours, or
12 months, which-
ever comes first
DRAIN swing drive
gearbox
FILL to BOTTOM of
FILL HOLE
1 service point
See NOTE 29.
42 Turntable Bearing Figure 6-11 A
ROTATE the
S/S 90° then
grease again
REPEAT until
the S/S has
made one full
rotation
Every 500 hours, or
6 months, whichever
interval comes first
LUBRICATE
6 grease fittings
at front of super-
structure (S/S)
6 service points
See NOTE 30.
See NOTE 31.
43
Turntable (Swing
Drive) Gear and
Drive Pinion
Figure 6-11 G SPRAY ON
Every 500 hours, or
6 months of service,
whichever interval
comes first
SPRAY ON
LUBRICATION
swing drive gear
and drive pinions
COAT ALL TEETH
2 service points
See NOTE 32.
NOTE 28: Check level in Swing Drive Gearbox Brake Assembly, and FILL to TOP of ELBOW.
NOTE 29: Check level in Swing Drive Gearbox, and FILL to BOTTOM of FILL HOLE.
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