Description; Maintenance; Removal - Manitowoc Grove TMS700E Service And Maintenance Manual

TMS700E SERVICE MANUAL
SECTION CONTENTS

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Theory Of Operation. . . . . . . . . . . . . . . . . . . . . . . . 5-1

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Functional Check . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Usage and Inspection . . . . . . . . . . . . . . . . . . . . . . 5-2
Preventative Maintenance . . . . . . . . . . . . . . . . . . 5-4
Brake Test Procedure . . . . . . . . . . . . . . . . . . . . . . 5-5
Hoist to Boom Alignment. . . . . . . . . . . . . . . . . . . . 5-6
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Motor And Brake. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
DESCRIPTION
One standard hoist is available for both the main and
auxiliary; the GHP 30A model hoist.
An overrunning clutch will allow the hoist to be raised without
releasing the brake while holding the load until there is
sufficient pressure to release the brake when hoisting down.
Each hoist has a hydraulic motor, a brake valve, a brake
cylinder and piston, and a brake clutch which controls motion
of the hoist's drum. These parts mount on one of the support
end brackets of the hoist.
The hoist speed switch on the armrest in the superstructure
cab controls hoist speed. When at the low speed position, it
does not energize the solenoid valve (hoist motor control
valve) on the hoist motor. This keeps the hydraulic piston
and hydraulic cylinder applied to the brake clutch, allowing
the motor to turn the hoist drum at low speed. When in the
high speed position, this switch energizes the solenoid valve
(hoist motor control valve) on the hoist motor. This causes
the hydraulic piston and hydraulic cylinder to release the
brake clutch, which allows the motor to turn the hoist drum at
high speed. For further description of the hoist, read its
component manual.
THEORY OF OPERATION
Flow from Section 1 of Pump No. 1 is routed through the
swivel to the directional control valve bank.
Grove
SECTION 5
HOIST AND COUNTERWEIGHT
Cable Guard Roller And Cable Guide Roller. . . . . 5-8
Hoist Drum Indicator System . . . . . . . . . . . . . . . . 5-10
Hoist Control Valves . . . . . . . . . . . . . . . . . . . . . . . 5-13
Counterweight . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
When the main hoist control lever in the cab is moved from
neutral, it sends a pilot pressure signal to the main hoist
directional control valve to shift the valve spool to route
hydraulic flow to the hoist motor control valve. The hoist
motor control valve internally routes the hydraulic flow to the
hoist motor as selected by the operator.
When the auxiliary hoist control lever in the cab is moved
from neutral, it sends a pilot pressure signal to the auxiliary
hoist directional control valve to shift the valve spool to route
hydraulic flow to the hoist motor control valve. The hoist
motor control valve internally routes the hydraulic flow to the
hoist motor as selected by the operator.
Additional flow (high speed boost) above and beyond the
positioning of the hoist motor control valve is obtained by
using the hydraulic boost switch. Positioning the switch to HI
allows the flow from Section 2 of Pump No. 1 to combine with
flow from Section 1 of Pump No. 1 to provide extra flow to the
hoist.
MAINTENANCE
Removal
1.
2.
Published 01-29-2015, Control # 512-01
HOIST AND COUNTERWEIGHT
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Hoist Rotation Indicator (HRI) Display System . . 5-12
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Remove all cable from the hoist drum.
Tag and disconnect the hydraulic lines to the hoist. Cap
or plug all lines and openings.
5
5-1