Manitowoc Grove RT540E Service Maintenance Manual

Published 4-20-2015, Control # 502-01 4-1
RT540E SERVICE MANUAL BOOM
4
GROVE
SECTION 4
BOOM
SECTION CONTENTS
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Boom System Components. . . . . . . . . . . . . . . . . . 4-2
Telescope Cylinder . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Fly Section Extension Cables . . . . . . . . . . . . . . . . 4-2
Extend Synchronizing Cable. . . . . . . . . . . . . . . . . 4-2
Fly Retraction Cables . . . . . . . . . . . . . . . . . . . . . . 4-2
Outer Mid Retract Cables . . . . . . . . . . . . . . . . . . . 4-2
Boom Extension Sequence . . . . . . . . . . . . . . . . . . 4-2
Boom Retract Sequence . . . . . . . . . . . . . . . . . . . . 4-4
Telescope Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Theory Of Operation . . . . . . . . . . . . . . . . . . . . . . . 4-4
Lift Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Theory Of Operation . . . . . . . . . . . . . . . . . . . . . . . 4-4
General Maintenance Notes. . . . . . . . . . . . . . . . . . 4-5
Swingaway Extension Removable . . . . . . . . . . . . 4-5
Boom Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Disconnect the Base Section . . . . . . . . . . . . . . . . 4-7
Remove the Base Section . . . . . . . . . . . . . . . . . . 4-8
Disconnect the Inner Mid Section . . . . . . . . . . . . 4-10
Remove the Inner Mid Section . . . . . . . . . . . . . . 4-10
Remove the Outer Mid Section. . . . . . . . . . . . . . 4-13
Remove the Tele Cylinder . . . . . . . . . . . . . . . . . 4-14
Boom Nose Sheaves. . . . . . . . . . . . . . . . . . . . . . . 4-15
Boom Nose Sheaves Removal . . . . . . . . . . . . . . 4-16
Boom Nose Sheaves Installation. . . . . . . . . . . . . 4-16
Boom Assembly Procedure . . . . . . . . . . . . . . . . . 4-17
Install Tele Cylinder . . . . . . . . . . . . . . . . . . . . . . . 4-17
Install the Outer Mid Section . . . . . . . . . . . . . . . . 4-20
Install the Inner Mid Section . . . . . . . . . . . . . . . . 4-24
Install the Base Section . . . . . . . . . . . . . . . . . . . . 4-29
Final Boom Assembly. . . . . . . . . . . . . . . . . . . . . . 4-31
Swingaway Extension Installation. . . . . . . . . . . . 4-32
Tensioning the Boom Extend and Retract
Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34
Boom Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 4-36
Functional Test Of The Boom . . . . . . . . . . . . . . . 4-36
Boom Inspection . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
Boom Alignment And Servicing . . . . . . . . . . . . . . 4-36
Extension And Retraction Cable Maintenance. . 4-37
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37
Telescope Circuit Troubleshooting . . . . . . . . . . . 4-38
Lift Circuit Troubleshooting . . . . . . . . . . . . . . . . . 4-40
Lift Cylinder Maintenance. . . . . . . . . . . . . . . . . . . 4-42
Lift Cylinder Removal. . . . . . . . . . . . . . . . . . . . . . 4-42
Lift Cylinder Disassembly And Assembly . . . . . . 4-42
Lift Cylinder Installation . . . . . . . . . . . . . . . . . . . . 4-42
DESCRIPTION
The crane is equipped with a four section 9.8 to 31.0 m (32.3
to 101.7 ft), synchronized full power, cable extended boom.
The boom is rectangular in design and utilizes one two-
stage double-acting, rod ported telescope cylinder. The
telescoping sections are supported on graphite impregnated
nylatron wear pads. Adjustable side wear pads prevent metal
to metal contact between the sections.
Boom assembly lift is provided by a single lift cylinder. Boom
elevation range is from -3 to 76 degrees.
An optional auxiliary boom nose (rooster sheave) is available
for the boom to simplify single part cable usage. The rooster
sheave is installed on the main boom nose and is secured by
pins that pass through the rooster sheave.
The boom has a 7.92 m (26 ft) offsetable or a 7.92 to 13.7 m
(26 to 45 ft) telescoping offsetable swingaway boom
extension provided to obtain additional boom reach. The
boom extension mounts directly to the boom nose utilizing a
four point attachment. The boom extensions may be offset at
0 to 30 degrees. In addition, the swingaway can be stowed
on the right side of the boom base section.
Safety
Do not attempt to work on the boom without experienced
supervision.
Reference Only

Manitowoc Grove RT540E Specifications

General

Brand	Manitowoc
Model	Grove RT540E
Category	Construction Equipment
Language	English