Grove Published 10-01-2020 Control # 699-00 4-7
GRT9165 SERVICE MANUAL BOOM
NOTE: Install a piece of wood between the lift cylinder and
the bottle jack on the lift cylinder support.
11. Turn the direction lever (3, Figure 4-4) to the correct
position. Use the hand pump (4) to install the lift cylinder
pivot pin. Use the hand pump (4) and bottle jack (4,
Figure 4-3) on the lift cylinder support (1) as necessary
to adjust the position of the lift cylinder rod end is
centered on the pivot pin.
12. Install shims as tagged during removal.
13. Install washer (2) and capscrew (1) to secure the lift
cylinder pin. Torque the capscrew (1). For more
information, see Fasteners and Torque Values, page 1-
16.
14. Disconnect the straps (10, Figure 4-2) from the lifting
device. Remove the straps (10) and front and rear boom
lift brackets (1 and 2).
15. Remove tag lines as necessary.
16. Connect the hydraulic lines as tagged to the boom
telescope cylinder. If equipped, connect the hydraulic
boom extension hydraulic hoses.
17. Route the electrical cables (2 and 3, Figure 4-1) through
the superstructure. Connect the electrical cables from
the boom to the turntable.
Functional Check
1. Activate the hydraulic system and check for proper
operation and leaks.
2. Ensure the boom will extend and retract properly.
NOTE: Cycle the boom several times to evacuate air from
the telescope cylinder.
3. Make sure the lift cylinder does not allow the boom to
drift down
BOOM NOSE SHEAVES
Do not attempt to work on the boom without experienced
supervision.
Boom Nose Sheaves Removal
1. Remove the securing pins (1, Figure 4-8) from the cable
retainer pins (2 and 3) and remove the cable retainer
pins from the upper and lower part of the boom nose.
2. Pull the lever to retract the lower inside cable retainer pin
(4).
3. Remove the hex head screws (5) securing the cover
plate (6) to the upper boom nose sheave (7). Remove
the cover plate.
NOTE: The upper boom nose sheave shafts weigh
approximately 11 kg (24 lb) and 7 kg (15 lbs). The
lower boom nose sheave shaft weighs 49 kg
(108 lbs). The boom nose sheaves weigh
approximately 10 kg (22 lb) each.
4. Carefully pull the upper boom nose sheave shaft (8)
from the boom nose, removing the spacers, bushings,
capscrews, plate, rope fixed point assembly, and boom
nose sheaves (9). Note the quantity of the spacers for
installation.
5. Remove the hex head screws (10) securing the cover
plate (11) to the lower boom nose sheave (12). Remove
the cover plate.
NOTE: The upper boom nose sheave shafts weigh
approximately 11 kg (24 lb) and 7 kg (15 lbs). The
lower boom nose sheave shaft weighs 49 kg
(108 lbs). The boom nose sheaves weigh
approximately 10 kg (22 lb) each.
6. Carefully pull the lower boom nose sheave shaft (12)
from the boom nose, removing the spacers, rope fixed
point assembly, and boom nose sheaves (9, Figure 4-8).
Note the quantity of the spacers for installation.
Boom Nose Sheaves Installation
Refer to Figure 4-8 when performing this installation.
NOTE: This procedure can be greatly simplified if two
technicians are used. One technician to hold the
sheave in place and the other to insert the spacers
and axle.
CAUTION
Pinch Hazard!
Use caution when installing pin, high pinch point risk.
DANGER
Accident Hazard!
To prevent serious injury or death, always wear personal
protective equipment; i.e., a hard hat, eye protection,
gloves and metatarsal boots.
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