Manitowoc Grove RT9130E-2 Service And Maintenance Manual

Grove Published 11-22-2016, Control # 345-12 6-1
RT9130E-2 SERVICE MANUAL SWING SYSTEM
6
SECTION 6
SWING SYSTEM
SECTION CONTENTS
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Theory Of Operation. . . . . . . . . . . . . . . . . . . . . . . . 6-2
Swing Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Swing Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Swing Box Assemblies . . . . . . . . . . . . . . . . . . . . . 6-8
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Swing Motor Maintenance . . . . . . . . . . . . . . . . . . 6-8
Swing Brake Assembly Maintenance . . . . . . . . . . 6-9
Swing Gearbox Maintenance . . . . . . . . . . . . . . . . 6-9
Swing Bearing. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
Swivels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
Hydraulic Swivel . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
Two-Port Water Swivel . . . . . . . . . . . . . . . . . . . . 6-19
Electrical Swivel. . . . . . . . . . . . . . . . . . . . . . . . . . 6-20
Swing Lock Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
360° Swing Lock Control—Positive Lock Type
(Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
DESCRIPTION
The purpose of the swing system is to allow the crane
superstructure to rotate atop the carrier frame. The
superstructure swing system provides full 360 degree
rotation in both directions and is equipped with free swing
capabilities. The term free swing means that, with the Swing
Brake switch in the OFF position, the superstructure will
swing freely after the Swing control lever is released until it
coasts to a stop or the glide swing brake pedal is depressed.
Swing is activated using the control lever in the cab. When
the swing lever is actuated, hydraulic pressure is routed to
the swing motors to drive the swing gearboxes in the
appropriate direction. As the gearboxes rotate, their pinion
gears mesh with the teeth on the swing bearing and rotate
the superstructure. Swing speed can be controlled by the
control lever and a High/Low Swing Speed switch on the
front console. The maximum rotation speed is 2.5 rpm in
HIGH speed and 1.25 rpm in LOW speed. Braking is
accomplished by depressing a glide swing brake pedal
which is a proportionate control valve that provides a
controlled braking of the swing motion.
The swing system consists of a hydraulic remote controller,
swing speed switch, series/parallel selector valve, a
directional control valve, the swing drives, the swing brake
assemblies, the brake pedal and power brake valve, and a
swing brake release solenoid valve.
The crane is equipped with a pin type swing lock as standard
and a standard 360 degree positive swing lock. The 360
degree positive swing lock meshes with the swing gear teeth
at any point of rotation. The pin type swing lock will only lock
the turntable in a straight ahead position over the front or
rear of machine. Both swing locks are operated from the cab.

Manitowoc Grove RT9130E-2 Specifications

General

Brand	Manitowoc
Model	Grove RT9130E-2
Category	Construction Equipment
Language	English