Greenlee / A Textron Company
4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
2
HRD-1 and HRD-58 Hydraulic Ground Rod Drivers
Description
The HRD-1 and HRD-58 Greenlee Utility Ground Rod
Drivers are heavy-duty, hydraulically powered recip-
rocating tools designed for driving ground rods of
various lengths. The high power-to-weight ratio and
low vibration reduce operator fatigue and increase
productivity. Included is a remote double-acting
operating valve that allows operation on either
open-center or closed-center hydraulic systems.
The HRD-1 can drive rods up to 25 mm (1") in
diameter. The HRD-58 accommodates rods up to
16 mm (0.625") in diameter.
Safety
Safety is essential in the use and maintenance of
Greenlee Utility tools and equipment. This manual
and any markings on the tool provide information for
avoiding hazards and unsafe practices related to the
use of this tool. Observe all of the safety information
provided.
Purpose of this Manual
This manual is intended to familiarize personnel with
the safe operation and maintenance procedures for
the following Greenlee Utility tools:
• HRD-1
1" Ground Rod Driver
• HRD-58
5/8" Ground Rod Driver
Keep this manual available to all personnel.
Replacement manuals are available upon request at
no charge at www.greenlee.com.
Other Publications
Tool Owners/Users
SAE Standard J1273 (Hose and Hose Assemblies):
Publication 99930323
All specifications are nominal and may change as design improve-
ments occur. Greenlee Textron Inc. shall not be liable for damages
resulting from misapplication or misuse of its products.
Loctite and 242 are registered trademarks of Loctite Corporation.
KEEP THIS MANUAL
Table of Contents
Description ................................................................2
Safety ........................................................................2
Purpose of this Manual .............................................2
Other Publications .....................................................2
Important Safety Information ................................ 3–5
Identification ..............................................................6
Specifications ........................................................ 7–8
Hoses and Fittings ....................................................9
Hose Connections .....................................................9
Typical Setup .............................................................9
Operation ........................................................... 10–11
Maintenance ...................................................... 12–13
Troubleshooting .......................................................14
Illustrations and Parts Lists ............................... 15–18
