Manitowoc Grove GRT8120 User Manual

Grove 1-1
GRT8120 OPERATOR MANUAL INTRODUCTION
1
Published 3-22-2021, Control # 702-02
SECTION 1
INTRODUCTION
SECTION CONTENTS
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Customer Support . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Noise/Vibration Test Results . . . . . . . . . . . . . . . . . . . 1-3
Noise Level Test Results. . . . . . . . . . . . . . . . . . . . . . 1-3
Vibration Level Test Results . . . . . . . . . . . . . . . . . . . 1-3
Serial Number Location . . . . . . . . . . . . . . . . . . . . . . . 1-3
GRT8120 Crane Components. . . . . . . . . . . . . . . . . . . 1-4
List of Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Torque Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
Axles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
Steering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
Wheels and Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
Boom. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
Outriggers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
Swivel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
Swing Gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
Hydraulic Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
Hoists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
GENERAL
Throughout this Operator Manual, reference is made to left,
right, front, and rear when describing locations. These
reference locations are to be considered as those viewed
from the operator seat with the superstructure facing forward
over the front of the carrier frame.
This Operator Manual provides important information for the
operation of the Model GRT8120 Grove Crane.
The GRT8120 rough terrain crane incorporates an all welded
steel frame using planetary drive axles to provide four-wheel
drive. Axle steering is accomplished utilizing hydraulic steer
cylinders to provide four-wheel steering:
• 2-wheel front
• 2-wheel rear
• 4-wheel coordinated
• 4 wheel crab
The GRT8120 Grove crane is driven with the boom centered
over the front single axle. All-wheel steer enables easy crane
positioning, and precise maneuvering on the job site.
The GRT8120 introduces new carrier design including:
• flat aluminum decking for easy rigging and access
• multiple, lockable storage compartments
• carrier electrical box, centrally located and accessible to
store batteries, modules, relays, and fuses
• full LED-lighting package including side-mounted carrier
work lights for improved jobsite visibility
The Rated Capacity Limiter Display Module (RDM) and the
Operator Display Module (ODM) are full-color graphical
displays on pivoting arms that provide maximum adjustability
for the crane operator.
The RDM allows the operator to program the Rated Capacity
Limiter (RCL) using the GRT8120 Load Chart Manual or the
RCL setup wizard. The RDM provides electronic display of
boom angle, boom length, load radius, boom tip height,
maximum permissible load, actual load, and warning of
impending two-block condition.
The Operator Display Module (ODM) allows the operator to:
• monitor performance of the crane systems
• select camera views displayed on the ODM screen
• telescope the boom
• extend and retract the outriggers
• lock and unlock the superstructure
• operate the boom extension stowage actuators
• set the working range limits (WRL) operating indicators,
levels, warnings and faults, prior to operating the crane,
aiding the operator to avoid obstructions
• view engine, transmission, and crane fault codes
• set controller curves and maximum speeds
• engage and disengage Economy (ECO) mode
• inhibit operation of the engine cleaning system

Manitowoc Grove GRT8120 Specifications

General

Brand	Manitowoc
Model	Grove GRT8120
Category	Construction Equipment
Language	English