Manitowoc Grove CD3340B - Section 11 11; Default Chapter; 3-Section Boom Assembly

GROVE 11-1
CD3340B/YB4411 STRUCTURAL
11
Published 04/07/2015 Control # 569-00
SECTION 11
STRUCTURAL
SECTION CONTENTS
Booms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
3-Section Boom Assembly . . . . . . . . . . . . . . . . . 11-1
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3
Boom Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-5
Wire Rope, Sheaves And Hoist Blocks. . . . . . . 11-15
Wire Rope Description . . . . . . . . . . . . . . . . . . . 11-15
Wire Rope Safety . . . . . . . . . . . . . . . . . . . . . . . 11-15
Inspecting Wire Rope . . . . . . . . . . . . . . . . . . . . 11-16
Inspection of Sheaves . . . . . . . . . . . . . . . . . . . 11-16
Wire Rope Lubrication . . . . . . . . . . . . . . . . . . . 11-16
Wire Rope Installation. . . . . . . . . . . . . . . . . . . . 11-17
Main Hoist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-19
Theory of Operation . . . . . . . . . . . . . . . . . . . . . 11-19
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-21
Main Hoist
(Braden Model) . . . . . . . . . . . . . . . . . . . . . . . . . . 11-31
Description of Hoist. . . . . . . . . . . . . . . . . . . . . . 11-31
Hoist Operation. . . . . . . . . . . . . . . . . . . . . . . . . 11-32
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-34
Hoist Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . 11-36
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-36
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-39
Planet Carrier Service . . . . . . . . . . . . . . . . . . . . 11-43
Primary Planet Carrier . . . . . . . . . . . . . . . . . . . . 11-45
Motor Support-Brake . . . . . . . . . . . . . . . . . . . . . 11-45
Brake Cylinder Pressure Test . . . . . . . . . . . . . . 11-49
Brake Clutch Service . . . . . . . . . . . . . . . . . . . . . 11-49
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . 11-52
Tulsa Hoist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-53
Drum Rotation Indicator. . . . . . . . . . . . . . . . . . . 11-53
Programming the Last Layer Indicator. . . . . . . . 11-54
Bearing, Mast and Related Parts . . . . . . . . . . . . 11-55
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-55
Mast Bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-56
Mast Bearing Bolts. . . . . . . . . . . . . . . . . . . . . . . 11-56
Inspection for Bearing Wear . . . . . . . . . . . . . . . 11-57
Replacing the Mast Bearing. . . . . . . . . . . . . . . . 11-57
Swing Gearbox and Pinion . . . . . . . . . . . . . . . . 11-59
Swing Gearbox Repair. . . . . . . . . . . . . . . . . . . . 11-60
Outriggers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-63
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-65
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-65
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-65
Outrigger Monitoring System (OMS)
(Optional—Standard in North America). . . . . . . 11-66
BOOMS
3-Section Boom Assembly
Refer to three-section boom assembly diagram Figure 11-1
for all part numbers in this section.
The three-section boom assembly includes three boom
sections, a telescope cylinder and an extend/retract chain
assembly.
Extending the Booms
The chain assembly used to retract and extend the 3rd boom
section consists of an extend rod (24), chain end (23), two
chains (20 and 26) connected together by a chain end (31)
and an adjustable chain end (63). The top extend chain (20)
wraps around a roller assembly (79) at the base end of the
telescope cylinder, used to extend the 2nd boom section.
Chain (20) is attached to the extend rod (24) with chain end
(23). Extend rod (20) attaches to the rear end of the 1st
boom section. The other end of chain (20) is attached to
chain end (31), which is attached to the 3rd boom section
with pin (11). The lower retract chain (26) is attached to the
front end of the 1st boom section with chain end (63).
When extending the booms, the telescopic cylinder extends
the 2nd boom section. When the cylinder extends it pulls on
the upper chain, which extends the 3rd boom section at the
same time.
Retracting the Booms
When retracting the booms, the telescope cylinder pulls the
2nd boom section into the 1st boom section. Since the chain
assembly is attached to the 3rd boom section and anchored
at both ends at the 1st boom section, when the telescope
cylinder retracts, the lower retract chain pulls the 3rd section
into the 2nd boom section.
Reference Only