MAINTENANCE AND LUBRICATION GRT8120 OPERATOR MANUAL
6-40 Published 3-22-2021, Control # 702-02
Item
Lube Point
Description
Figure No.
Approved
Lubricant
Approximate
Capacity
Service Interval
Service
Application
Boom Lubrication (Continued)
98
Tele Cylinder Sled
Wear Pad
Figure 6-21 M
Coat areas
that the wear
pads move on
Every 500 hours, or
6 months of service,
whichever interval
comes first
BRUSH ON
5 service points
99
Derricking Pivot
Pin
Figure 6-21 A
Until grease
extrudes
Every 100 hours, or
1 month of service,
whichever interval
comes first
LUBRICATE
2 service points
100
Boom Extension
Sheave
Figure 6-21 A —
Every 250 hours, or
3 months of service,
whichever interval
comes first
CHECK
2 service points
CHECK sheaves
for dry points of
operation and
grease leaks
See NOTE 47.
101 Mast Sheave Figure 6-21 A —
Every 250 hours, or
3 months of service,
whichever interval
comes first
CHECK
2 service point
CHECK sheave
for dry points of
operation and
grease leaks
See NOTE 47.
102
Boom Nose
Sheaves
Figure 6-21 A —
Every 250 hours, or
3 months of service,
whichever interval
comes first
CHECK
7 service points
CHECK sheave
for dry points of
operation and
grease leaks
See NOTE 47.
103
Auxiliary Boom
Nose Sheave
Figure 6-21 A —
Every 250 hours, or
3 months of service,
whichever interval
comes first
CHECK
1 service point
CHECK sheave
for dry points of
operation and
grease leaks
See NOTE 47.
104
Boom Extension
Screw
Figure 6-21 A
Brush on
entire screw
BRUSH ON, as
necessary
BRUSH ON
1 service point
105
Boom Extension
Pivot Pins
Figure 6-21 A
Until grease
extrudes
Every 250 hours, or
3 months of service,
whichever interval
comes first
LUBRICATE
2 service points
NOTE 47: Slowly turn the sheave, and examine it for rough or dry points of operation and grease leaks. If rough or dry
points of operation are found, then replace the sheave. If grease leaks are found, then replace the sheave.
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