MAINTENANCE AND LUBRICATION GRT8120 OPERATOR MANUAL
6-34 Published 3-22-2021, Control # 702-02
Telescope Section 5 (Tele 5)
1. Make sure that the tele cylinder is locked to Tele 5.
2. Extend and lock Tele 5 to the 100% pinning location.
3. Extend and lock Tele 4 to the 50% pinning location.
4. Lower the boom to 0° and perform the following greasing
in this position:
a. Grease outer sides of Tele 5 in the areas that touch
the front wear pads of Tele 4.
b. Grease the rear upper wear pads of Tele 5 on both
sides, at the grease fittings (1, Figure 6-17), through
the openings in Tele 4.
c. Grease locking pins on both sides (2, Figure 6-17).
NOTE: To grease the rear upper wear pads of Tele 5 at the
50% or 89% pinning locations, extend and lock
Tele 5 to these pinning locations and repeat
Step 5b greasing.
5. While in the horizontal position, first retract Tele 4, and
then retract and extend Tele 5 several times to make
sure that grease is properly distributed.
6. When Tele 5 greasing is complete, retract and lock
Tele 5 to the 0% pinning location.
7. Raise boom to 70°.
Telescope Section 4 (Tele 4)
1. Make sure that the tele cylinder is locked to Tele 4.
2. Extend and lock Tele 4 to the 100% pinning location.
3. Extend and lock Tele 3 to the 50% pinning location.
4. Lower the boom to 0° and perform the following greasing
in this position:
a. Grease outer sides of Tele 4 in the areas that touch
the front wear pads of Tele 3.
b. Grease the rear upper wear pads of Tele 4 on both
sides, at the grease fittings (1, Figure 6-17), through
the openings in Tele 3.
c. Grease locking pins on both sides (2, Figure 6-17).
NOTE: To grease the rear upper wear pads of Tele 4 at the
50% or 89% pinning locations, extend and lock
Tele 4 to these pinning locations and repeat
Step 4b greasing.
5. While in the horizontal position, first retract Tele 3, and
then retract and extend Tele 4 several times to make
sure that grease is properly distributed.
6. When Tele 4 greasing is complete, retract and lock
Tele 4 to the 0% pinning location.
7. Raise boom to 70°.
Telescope Section 3 (Tele 3)
1. Make sure that the tele cylinder is locked to Tele 3.
2. Extend and lock Tele 3 to the 100% pinning location.
3. Extend and lock Tele 2 to the 50% pinning location.
4. Lower the boom to 0° and perform the following greasing
in this position:
a. Grease outer sides of Tele 3 in the areas that touch
the front wear pads of Tele 2.
b. Grease the rear upper wear pads of Tele 3 on both
sides, at the grease fittings (1, Figure 6-17), through
the openings in Tele 2.
c. Grease locking pins on both sides (2, Figure 6-17).
NOTE: To grease the rear upper wear pads of Tele 3 at the
50% or 89% pinning locations, extend and lock
Tele 3 to these pinning locations and repeat
Step 4b greasing.
5. While in the horizontal position, first retract Tele 2, and
then retract and extend Tele 3 several times to make
sure that grease is properly distributed.
6. When Tele 3 greasing is complete, retract and lock
Tele 3 to the 0% pinning locations.
7. Raise boom to 70°.
Telescope Section 2 (Tele 2)
1. Make sure that the tele cylinder is locked to Tele 2.
2. Extend and lock Tele 2 to the 100% pinning location.
3. Extend and lock Tele 1 to the 50% pinning location.
4. Lower the boom to 0° and perform the following greasing
in this position:
a. Grease outer sides of Tele 2 in the areas that touch
the front wear pads of Tele 1.
b. Grease the rear upper wear pads of Tele 2 on both
sides, at the grease fittings (1, Figure 6-17), through
the openings in Tele 1.
c. Grease locking pins on both sides (2, Figure 6-17).
NOTE: To grease the rear upper wear pads of Tele 2 at the
50% or 89% pinning locations, extend and lock
Tele 2 to these pinning locations and repeat
Step 4b greasing.
5. While in the horizontal position, first retract Tele 1, and
then retract and extend Tele 2 several times to make
sure that grease is properly distributed.
6. When Tele 2 greasing is complete, retract and lock
Tele 2 to the 0% pinning location.
7. Raise boom to 70°.
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