6-1
TMS800E SERVICE MANUAL SWING SYSTEM
Published 01-29-2014, Control # 496-00
SECTION 6
SWING SYSTEM
TABLE OF CONTENTS
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Swing Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Swing Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Swing Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Swing Gearbox and Brake . . . . . . . . . . . . . . . . . . . 6-8
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Swing Bearing. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
Swivels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
Hydraulic Swivel . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17
Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . 6-17
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17
Integral W/Hydraulic Water Swivel. . . . . . . . . . . . 6-18
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19
Electrical Swivel . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19
Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . 6-19
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20
Swing Lock Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
360° Swing Lock Control (Positive Lock Type)
(Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
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 controller is released until it coasts to a
stop or the swing brake pedal is depressed.
Swing is activated using the controller in the cab. When the
swing lever is actuated, hydraulic pressure is routed to the
swing motor to drive the gearbox in the appropriate direction.
As the gearbox rotates, the pinion gear meshes with the
teeth on the swing bearing and rotates the superstructure.
Swing speed can be controlled by the swing speed switch
located on the left armrest. The maximum rotation is 2.5 rpm.
Braking is accomplished by depressing a glide swing brake
pedal which is an electric pedal that provides a controlled
braking of the swing motion.
The swing system consists of an electric pedal controller, a
directional control valve, the swing drive, the swing brake
assembly, the brake pedal, 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 lock the
turntable in the over the front and over the rear positions.
Both swing locks are operated from the cab.
THEORY OF OPERATION
Swing Drive
The hydraulic power for the swing drive (see Figure 6-1) is
supplied by hydraulic pump #2. Oil flows from the pump to
the outrigger selector manifold to the hydraulic swivel. Flow
from the swivel is routed to the swing directional control
valve.
When the controller is positioned to select right or left swing,
the flow through the control valve is directed to the swing
motor. If the swing brake selector switch is in the off position,
the superstructure will rotate in the desired direction. Shifting
Reference Only