INTRODUCTION GRT8120 OPERATOR MANUAL
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Published 3-22-2021, Control # 702-02
The engine is mounted at the rear of the crane, and provides
motive power through a transmission range-shift with six
forward and six reverse speeds. Hydraulic, double box,
sliding beam outriggers are integral with the frame. An ECO
mode system supports intelligent power management and
decreased fuel consumption.
The carrier frame incorporates an integral fifth wheel to
which the rear axle is mounted. This integral fifth wheel
provides axle oscillation during travel, when the boom and
superstructure are centered over the carrier. Axle oscillation
lockout occurs automatically when the superstructure rotates
from the travel position.
The superstructure is capable of 360° continuous rotation in
either direction. All crane functions are controlled from the
fully-enclosed cab mounted on the superstructure. The cab
seat incorporates armrest-mounted electronic program-
mable single-axis or dual-axis controllers and a jog dial for
easy data input. The crane is equipped with a seven-section
MEGAFORM™ boom with TWIN-LOCK™ boom pinning
system. Additional reach is obtained by utilizing an optional
swingaway boom extension. Lifting is provided by a main
hoist and an optional auxiliary hoist.
Customer Support
Grove and our distributor network want to ensure your
satisfaction with our products and customer support. Your
local distributor is the best equipped and most
knowledgeable to assist you for parts, service, and warranty
issues. They have the facilities, parts, factory trained
personnel, and the information to assist you in a timely
manner. We request that you first contact them for
assistance. If you feel you need factory assistance, please
ask the distributor’s service management to coordinate the
contact on your behalf.
A compact disc or USB flash drive, which includes sections
on Operation, Safety and Maintenance for crane operators
and owners, is supplied when the crane is purchased new.
Additional copies are available from your Grove distributor.
New Owners
If you are the new owner of a Grove crane, please register it
with Manitowoc Crane Care so we have the ability to contact
you if the need arises.
Go to: https://www.manitowoc.com/support/change-
ownership and complete the form.
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