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4-10
Published 10-01-2020 Control # 699-00
BOOM
GRT9165 SERVICE MANUAL
3.
Tighten the screw against the spring load until the
locking pin (1) is pulled in as far as it will go and is
situated behind the side wall of the telescopic section.
4.
Unlock the other side of the telescopic section using the
same procedure.
After the pins are retracted, use your external means
(second crane, forklift, etc.) to retract that section and then
remove the bolts to pin that section in a retracted state. Move
to the next section to be retracted (as necessary).
Locking Telescopic Sections
1.
Retract the telescopic section until the locking pin (1,
Figure 4-10) is in the middle of the opening.
2.
Remove the screw from the bore hole (4). The locking
pin (1) is then pushed out of the opening due to spring
tension.
3.
Install the grease fitting into the bore hole.
4.
Retract the telescopic section until the recesses (2) have
been set down on the telescopic section (3) above it.
CHECK THE LOCKING SYSTEM
Your authorized Grove Crane distributor or Manitowoc Crane
Care should check the main boom locking system.
ODM COMPONENTS
Maintenance of the Slip Ring Assembly of the Cable
Drum
Maintenance of the slip ring assembly is carried out to
prevent contamination and corrosion and to prevent
malfunctions on the RCL. Two cable drums feature slip ring
assemblies that require maintenance:
•
The cable drum (1, Figure 4-11) on the left side of the
main boom.
•
The second cable drum (1, Figure 4-12) is located in the
main boom underneath the telescoping cylinder.
CAUTION
Released Lock Hazard!
Under no circumstances may you operate the telescoping
cylinder as long as the lock is mechanically released.
Therefore unscrew all screws out of the bore holes
immediately after finishing the repair work.
In this way, you prevent the telescoping cylinder from
hitting the locking system and consequently damaging it.
Do not unlock a section and then boom up until it slides in.
Damage to equipment will result.
WARNING
Lack of Maintenance Work Hazard!
Have the additional maintenance work on the main boom
locking system performed by your authorized Grove
Crane distributor or Manitowoc Crane Care regularly.
This prevents the complete unlocking of a telescoping
section in Emergency operation/Emergency program
mode, which could cause serious accidents and damage
to the truck crane.
FIGURE 4-11
10248
1
FIGURE 4-12
10249
1
Содержание Grove GRT9165
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