Hammerhead HG375 User manual
1
Parts
Manual
HG375
TECHNICAL PUBLICATIONS
1
HG375
For replacement copy order P/N 960-1013
Updated: 10/27/2020
Descriptions and specications were current at the time of publication. However, Earth Tool Company LLC
(HammerHead Trenchless) reserves the right to make changes in engineering, design and specications;
add improvements; or discontinue manufacturing at any time without notice or obligation. This manual may
not reect the most current version of your machine. Please visit www.hammerheadtrenchless.com for the
most recent and up to date version.
HammerHead and the HammerHead logo are registered trademarks of Earth
Tool Company LLC, Lake Mills, WI, USA.
© 2019 Earth Tool Company LLC. All Rights Reserved.
2
INTRODUCTION
HOW TO USE THIS MANUAL
This manual contains illustrations and parts list of components and assemblies which make
up various HammerHead® models. Each page consists of the name of the assembly or
component, a gure number, reference numbers, part numbers, part names, and the
quantities of the parts used.
Assembly or component names help identify the illustration and parts for each gure. This
name also helps locate the general area of the machine where the assembly or component
can be located.
Figure numbers are used to identify each assembly or component and to group these
assemblies or components into major categories.
Reference numbers shown in a column refers to the numbered parts in the illustration. This ties
the part in the illustration to the part number and description in the parts list. Part numbers
are used to identify individual parts or part assemblies.
Part descriptions provide the name of the part, plus additional information such as
dimensional specications and what parts are grouped together to form part assemblies,
which helps you identify the part(s).
Quantities listed for each gure are only for that assembly or component and not the total
used per machine unless stated so in the “Remarks” column.
This parts manual is not intended to be a complete guide for machine service or repairs.
Contact your HammerHead dealer for any of your service or technical requirements.
ORDERING PARTS
Parts for repair or replacement are available through the worldwide network of authorized
HammerHead dealers. The use of aftermarket replacement parts in your HammerHead
equipment reduces performance and overall equipment life and may also void or interfere
with the factory warranty.
Use only genuine HammerHead parts from your authorized dealer for repair or replacement.
Always give the serial number and model number of the machine for which parts are
being ordered. When ordering parts for component(s), which are not manufactured by
HammerHead Trenchless Equipment, also give the serial number of that component(s).
Order all parts by part number, part name, and quantity needed. Do not order parts by
illustration reference numbers.
3
UPDATING AND REORDERING MANUALS
The parts lists, illustrations, and specications in this manual are based on the latest
information available at the time of publication. Your machine may have product
improvements and options not yet contained in this manual. Please check the web site
www.hammerheadtrenchless.com for any updates.
Earth Tool Company LLC reserves the right to make changes at any time without notice or
obligation to you. Your dealer will receive notice of these changes and can assist you with
accurate parts identication when ordering.
A copy of this manual is supplied with each machine. Additional copies are available
through your dealer. When ordering additional manuals, use the reorder number listed on
the front cover and the quantity needed. Electronic copies of this manual are also available
on the web at www.hammerheadtrenchless.com.
OPERATIONS INSTRUCTIONS
Instructions on recommended equipment use and maintenance can be found in the
Operator’s Manual shipped with your equipment. Operator’s Manuals are also available on
the web at www.hammerheadtrenchless.com.
Thank you for buying and using Genuine HammerHead® Trenchless Equipment, parts and
accessories.
INTRODUCTION
4
WARRANTY
Limited Warranty Policy
Earth Tool Company, LLC, dba HammerHead Trenchless (“HammerHead”) warrants each new
industrial product of its own manufacture to be free from defects in material and workmanship,
under normal use and service for one full year after delivery to the owner. During the warranty period,
HammerHead shall furnish parts without charge for any HammerHead product that fails because
of defects in material and workmanship. This warranty and any possible liability of HammerHead
Trenchless here under is in lieu of all other warranties, express, implied, or statutory, including, but not
limited to any warranties of merchantability or tness for a particular purpose.
The parties agree that the Buyer’s SOLE AND EXCLUSIVE REMEDY against HammerHead, whether in
contract or arising out of warranties, representations, or defects shall be for the replacement or repair
of defective parts as provided herein. In no event shall HammerHead’s liability exceed the purchase
price of the product. The Buyer agrees that no other remedy (including, but not limited to, incidental
or consequential loss) shall be available to him. If, during the warranty period, any product becomes
defective by reason of material or workmanship and Buyer immediately noties HammerHead of
such defect, HammerHead shall, at its option, supply a replacement part or request the return
of the product to its plant in Lake Mills, Wisconsin. No part shall be returned without prior written
authorization from HammerHead, and this warranty does not obligate HammerHead to bear any
transpiration charges in connection with the repair or replacement of defective parts. HammerHead
Trenchless will not accept any charges for labor and/or parts incidental to the removal or remounting
of parts repaired or replaced under this Warranty.
This Warranty shall not apply to any part or product which shall have been installed or operated in a
manner not recommended by HammerHead nor to any part or product which shall have been
neglected, or used in any way which, in HammerHead’s opinion, adversely affects its performance;
nor negligence of proper maintenance or other negligence, re or other accident; nor with respect
to wear items; nor if the unit has been repaired or altered outside of an HammerHead authorized
dealership in a manner of which, in the sole judgment of HammerHead affects its performance,
stability or reliability; nor with respect to batteries which are covered under a separate adjustment
warranty; nor to any product in which parts not manufactured or approved by HammerHead
have been used; nor to normal maintenance services or replacement of normal service items.
Equipment and accessories not of our manufacture are warranted only to the extent of the
original Manufacturer’s Warranty and subject to their allowance to us, if found defective by them.
HammerHead reserves the right to modify, alter, and improve any product or parts without incurring
any obligation to replace any product or parts previously sold with such modied, altered, or
improved product or part. No person is authorized to give any other Warranty, or to assume any
additional obligation on HammerHead’s behalf unless made in writing, and signed by an ofcer
of HammerHead.
HAMMERHEAD TRENCHLESS
LAKE MILLS, WISCONSIN
5
CONTENTS
Decals
Decals—Domestic 8
Decals—International 14
Decals—Domestic Wheeled Unit 22
Decals—Domestic Track Unit 28
Decals—International Wheeled Unit 34
Decals—International Track Unit 38
Control Panel Decals 42
Engine Components
Engine Assembly 50
Engine Mounts 52
Air Cleaner 54
Exhaust 56
Pumps to Engine 58
Reservoir Tank 60
Fuel System 62
Hydraulic Tank 70
Frame Components
Sheet Metal 76
Levelwind 112
Drum 116
Capstan 120
Chains and Sprockets 126
Miscellaneous 130
Main Valve 136
Stabilizer 138
Insulation 140
Wheeled Unit Frame Components 146
Track Unit Frame Components 160
Control Components
Control Panel 178
Control Panel—Electrical 180
Control Panel—Hydraulics 184
Manual Box 186
Hydraulics
Hydraulic Schematics 190
Hydraulic Valve Locations 194
Hydraulic Hoses 196
Track Unit Hydraulic Hoses 226
Electrical
Electrical Schematic 236
Battery 252
Lights 254
Joystick 260
Circuit Breaker 262
Encoder 264
Pressure Transducer 266
Control Panel Electrical 268
Fuses 270
Accessories
Options 274
Miscellaneous
SAE Bolt and Nut Torque Value Chart 278
Metric Bolt and Cap Screw Torque Values 279
Torque Standards Hydraulic Fittings 280
7
DECALS
8
1
2
3
4
5
7
6
8
Decals—Domestic
HG375
9
Not Shown:
Footnotes:
Notes:
Bom
ID
Part
No Description Qty Remarks
1 700-133 WARNING ONE CALL NOTIFICATION 1
2 273-475 WARNING READ OPERATOR MANUAL 1
3 923-2226 DECAL, STABILIZER (DOM) 1
4 270-6297 DECAL, ICES 1
5 941-5614 DECAL, WHEEL CHOCK 1
6 700-009 CAUTION WEAR HEARING PROTECTION 1
7 941-7651 DECAL, SERIAL NO, HG WINCHES 1
8 923-2203 DECAL, HOT 1
Decals—Domestic
HG375
10
1
2
4
3
Decals—Domestic
HG375
11
Not Shown:
Footnotes:
Notes:
Bom
ID
Part
No Description Qty Remarks
1 273-459 DECAL, NO ETHER (DOM) 1
2 923-2207 DECAL, PINCH POINT 1
3 912-1029 DECAL, REFUEL WARNING 1
4 913-0197 DECAL, DIESEL FUEL 1
Decals—Domestic
HG375
12
1
24
2
5
3
Decals—Domestic
HG375
13
Not Shown:
Footnotes:
Notes:
Bom
ID
Part
No Description Qty Remarks
1 941-5613 DECAL, GREASE 1
2 923-2207 DECAL, PINCH POINT 2
3 913-7635 DECAL, OIL 1
4 912-1035 DECAL, COOLANT WARNING 1
5 912-1028 DECAL, WARNING BATTERY 1
Decals—Domestic
HG375
14
1
2
3
4
5
6
7
9
8
10
Decals—International
HG375
15
Not Shown:
Footnotes:
Notes:
Bom
ID
Part
No Description Qty Remarks
1 923-2232 DECAL, ONE CALL (INT) 1
2 700-143 WARNING READ MANUAL ISO 1
3 923-2228 DECAL, STABILIZER (INT) 1
4 274-364 EC MARK 1
5923-2223 DECAL, OPS MANUAL REPLACEMENT 1
6941-5614 DECAL, WHEEL CHOCK 1
7941-7651 DECAL, SERIAL NO., HG WINCHES 1
8700-009 CAUTION WEAR HEARING PROTECTION 1
9 923-2216 DECAL, HOT (INT) 1
10 270-2040 OPERATORS MANUAL 1
Decals—International
HG375
16
8
7
6
5
4
3
1
2
Decals—International
HG375
17
Not Shown:
Footnotes:
Notes:
Bom
ID
Part
No Description Qty Remarks
1 913-7635 DECAL, OIL 1
2 941-5613 DECAL, GREASE 1
3 913-0194 DECAL, BATTERY WARNING 1
4 923-2214 DECAL, HAND CRUSH (INT) 1
5 913-0196 DECAL, COOLANT WARNING 1
6 270-5742 WARNING NO ETHER/STARTER FLUID ISO 1
7 913-0198 DECAL, DIESEL FUEL (INT’L) 1
8 913-0195 DECAL, REFUELING WARNING 1
Decals—International
HG375
18
12
Decals—International
HG375
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