GRT8120 OPERATOR MANUAL
B-4 Published 3-22-2021, Control # 702-02
Luffing Boom Extension Enable/Disable Switch .. 3-21, 3-23
Lumbar Support Adjustment Knob
....................... 3-21, 3-23
M
Main Hoist Controller (Dual Axis) ......................... 3-21, 3-22
Main Hoist Controller (Single Axis)
...................... 3-27, 3-28
Main Hoist Enable/Disable Switch
....................... 3-21, 3-22
Main Hoist Rope, Lowering and Raising
....................... 4-47
Manitowoc
Mobile Application, Diagnostics Codes
................ 4-141
Manual Holder, User
............................................ 3-34, 3-35
Mast Sheave Assembly, Boom
Extension
.................... 5-32, 5-34, 5-39, 5-43, 5-48, 5-49
Mat, Floor
............................................................. 3-29, 3-30
Mobile Phone Holder
........................................... 3-13, 3-14
Momentary Limit Bypass Switch (Non-CE
Certified Cranes)
................................................. 3-7, 3-10
Motion Button, Left Side
............................................... 3-53
Motion Button, Right Side
............................................. 3-53
Motion Command Indicator, Left
................................... 3-56
Motion Command Indicator, Right
................................ 3-56
N
Navigating the ODM and RDM ..................................... 4-67
Navigation Control Pad
........................................ 3-17, 3-18
O
OBD Connector ................................................... 3-15, 3-16
ODM
.................................................................... 3-17, 3-18
Accessing Boom Extension Group
........................ 5-27
Boom Extension Group
.......................................... 5-26
Offsetting
Hydraulic Boom Extension
..................................... 5-57
Manual Boom Extension
........................................ 5-56
Operator Display Module
..................................... 3-17, 3-18
Operator Display Module (ODM) Operation
................. 4-68
Operator Seat
............................................................... 3-20
Option Button
....................................................... 3-53, 3-54
Outlet, 12-Volt
...................................................... 3-15, 3-16
Outlet,120V/240V Engine Block Heater
........................ 3-44
Outrigger Beam Button
........................................ 3-53, 3-54
Outrigger Extend/Retract Switch
......................... 3-21, 3-24
Outrigger Floats
.............................................................. 5-9
Removing from Storage
........................................... 5-9
Stowing for Transport
............................................... 5-9
Outrigger Jack Button
.......................................... 3-53, 3-54
Outrigger Monitoring System (OMS)
............................ 4-21
Outriggers
Manually Setting the Outriggers
............................. 4-19
Setting the Outriggers Using Auto-Level
................ 4-20
Stowing the Outriggers
.......................................... 4-21
Using the Outriggers
.............................................. 4-19
P
Panel
Fuse and Relay (In Cab)
.............................. 3-34, 3-36
Left Overhead and Side
..........................................3-13
Right Overhead Control
............................................3-7
Parking Brake Indicator (On Remote Control Unit)
.......3-56
Parking Brake Switch
.............................................. 3-4, 3-5
Parking the Crane
.......................................................4-178
Pedal
Service Brake
............................................... 3-29, 3-30
Swing Brake
................................................. 3-29, 3-30
Throttle
......................................................... 3-29, 3-30
Pin Interlock Mechanism, Boom Extension
...................5-21
Boom Nose Installation Pins
...................................5-21
Front Mounting Pin
.................................................5-21
Front Mounting Pin Handle
.....................................5-22
Platform, Hoist
.................................................................5-4
Port, Programming
........................................................3-53
Power Button
.................................................................3-53
Power Indicator, Battery Pack
.......................................3-56
Preload Checks
...........................................................4-176
Pre-Starting Checks
........................................................4-4
Programming Port
.........................................................3-53
R
Racing the Engine ...........................................................4-9
Radio
................................................................... 3-34, 3-35
Raising and Lowering the Auxiliary Hoist Rope
............4-48
Raising and Lowering the Boom
...................................4-22
Raising and Lowering the Main Hoist Rope
..................4-47
Rated Capacity Limiter Display Module
.............. 3-17, 3-18
Rated Capacity Limiter Display Module
(RDM) Operation
......................................................4-158
RCL Early Warning Indicator
............................... 3-17, 3-19
RCL Light Tower
.............................................................5-7
Extending for Operation
............................................5-7
Retracting for Transport
............................................5-7
RCL Light Tower (Optional), External
...........................3-43
RCL Shutdown Warning Indicator (CE
Certified Cranes)
.............................................. 3-17, 3-19
RCL Shutdown Warning Indicator (Non-CE
Certified Cranes)
.............................................. 3-17, 3-19
RDM
.................................................................... 3-17, 3-18
Rear Steer Switch
............................................... 3-21, 3-24
Rear Wheel Steering
.....................................................4-17
Rear Window
....................................................... 3-34, 3-35
Reeving
Diagrams
................................................................5-13
Examples
................................................................5-13
Hoist Rope
.................................................... 5-13, 5-17
Hoist Rope over Boom
...........................................5-17
Hook Block, Quick
..................................................5-17
Relay and Fuse Panel (In Cab)
........................... 3-34, 3-36
Remote Control Enable/Disable Switch
.................. 3-7, 3-9
Remote Control Unit
Operation
................................................................4-50
Overview, Storage, and Charging
..........................3-50
Rigging, Dead-End
........................................................5-18