Allied HO-PAC 4000 Guide

Thoroughly read and understand the content of this manual before using the Allied HO-PAC. The safe and
efcient use of the Allied equipment depends upon proper installation, operation, maintenance and training.
Keep this manual in a convenient location so that it is easily accessible for future reference. Contact your Allied
Dealer or the Allied Customer Service Department for replacement manuals. Inquiries regarding the content of this
manual must include effective date shown on inside cover.
TM574173
Vibratory Plate
Compactor /
Driver
Model
4000
Safety, Operation, Maintenance and Parts

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Contact Information and Revision History
3900 Kelley Ave
Cleveland, Ohio 44114 Tel: [phone]
E-mail: [email protected] Fax: [phone]
Continuous improvement of our products is an Allied policy. Allied reserves the right to change, edit, delete or modify the content
of this document, including descriptions, illustrations and specications without prior notification. The content of this publication
describe the product at the time of its effective date, and may not reect the product in the future. Specications are based on
published information at the time of publication. When changes become necessary, these will be noted in the table below.
Earlier dated publications are immediately cancelled and superseded by publications with the most current date recorded.
Material not in conict with the most recent effective date shall remain in effect. For product or document updates go to
www.alliedcp.com
Revision History for Document No. TM574173
Table of Revision History TM574173
Release Date Page Summary of Change
18_feb v Revise Label Set
15_nov Throughout Minor revisions to text, tables and gures. Table 13.1 item 31, 35 573600 build rev-E.
--- --- 11_sep 573600 Build rev-C, Build rev-D.
10_mar Cover,2,5,9,11,12,1
4,25,28,29,31
Top frame illustration – revise mounting hole arrangement. Eccentric housing - add lift
points. Revise oil ll & check plug number. Add pressure decal. Motor mounting - Add 4
(½”) bolt holes to bearing housing. Item 28,29 length. Add 32,33,34 573600 build rev-B.
09_apr All Original Issue of 574173

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TM574173_HP4000_18feb
SAFETY Information
Safety Statements and Hazard Alerts
Safety messages appear throughout this manual and
on labels afxed to the Allied equipment. Read and
understand the information communicated in safety
messages before any attempt to install, operate,
service or transport the Allied equipment.
Keep all safety labels clean. Words and illustrations
must be legible. Before operating this equipment,
replace damaged or missing labels.
Purpose of Safety Messages
Information provided in safety messages is important
to your safety. Safety messages communicate the
extent, magnitude and likelihood of injury associated
with unsafe practices such as misuse or improper
handling of the Allied equipment. Safety messages
also explain how injury from potential hazards can be
avoided.
Safety messages presented throughout this manual
communicate the following information:
1. Alert personnel to potential hazards
2. Identify the nature of the hazard
3. Describe the severity of the hazard, if
encountered
4. Instruct how to avoid the hazard
Safety Alert Symbol
The safety alert symbol is represented by the
exclamation point within an equilateral triangle. This
symbol means - ATTENTION, BECOME ALERT,
YOUR SAFETY IS INVOLVED.
Fig. S1 Safety Alert Symbol
The Safety Alert Symbol (Fig. S1), either used alone
or in conjunction with a signal word, is used to draw
attention to the presence of potential safety hazards.
Signal Words
“DANGER”, “WARNING” and “CAUTION” are signal
words used to express severity of consequences
should a hazard be encountered.
DANGER - Indicates an imminent hazard, which, if
not avoided, will result in death or serious injury.
WARNING - Indicates an imminent hazard, which, if
not avoided, can result in death or serious injury.
CAUTION - Indicates hazards which, if not avoided,
could result in serious injury or damage to the
equipment.
Pictograms
Pictograms provide another element that further
enhances the effectiveness of the hazard
communication.
CAUTION
Hot surface - Burn injury if contacted.
Some components of the machinery
become hot during operation. Allow parts
and uids to cool before handling.
Fig. S-2 Example of Safety Message - Typical Format
Signal Words Used for Non-Hazard Messages
Other message types appearing in this manual utilize
signal words 'IMPORTANT' and 'NOTE'. These
communicate instructions and suggestions, but are
not safety-related.
IMPORTANT – Special attention required. Contains
information, which, if not followed, may diminish
performance, interrupt reliability and production or
cause equipment damage.
NOTE – Provides clarity and helpful tips. Highlight
suggestions, which will enhance installation,
reliability, or operation.

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SAFETY Information – [cont'd]
Meaning of Pictograms
Pictograms are used to rapidly communicate
information. For the purposes of this manual and
labels afxed to the Allied equipment, pictograms are
dened as follows:
Read the manual before use.
Refer to the manual for further
details or procedures.
Read the Service Manual For
Additional Information
Shut off power & remove key
before servicing
Fragments / debris becoming
projectiles.
Install protective guards on cab
to shield operator against
fragments / debris
Personnel maintain a safe
distance from the work tool,
work zone
Identies lift point
Personal Protection Equipment
Hearing protection
Safety eyewear
Gloves
Safety shoes
Falling object
Unsupported loads
Crush point / Falling part
xFalls into open excavations
xTrench collapse
Electric Shock
Gas / Oil under pressure
Hot surface
Fluid injection
Prohibited actions must be
avoided to prevent injury and/or
equipment damage
A prohibited action is identied
with the X-out or a circle with a
diagonal slash.
The check mark symbol is used to
indicate actions and methods that
are recommended, correct and
approved
DO NOT R EFI L LH E RE

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SAFETY Information – [cont’d]
Safety, Identication and Information Labels
Information labels afxed to the Allied equipment
include safety warnings, identication and
instructions important to operation and service.
Keep all safety labels clean. Words and illustrations
must be legible. Before operating this equipment,
replace damaged or missing labels. Refer to the parts
section for ordering information. Refer to Figure S-2
for their location on the equipment.
Table S.1 Label Illustration and Description
Label Figure Description
L1 Read the Manual - Directs personnel to the manual for further information
and instructions
L2 Stay Clear - Alerts personnel and by-standers to maintain a safe distance
from the Allied work tool during operation.
L3 Hot Surface - Identies surfaces of the Allied work tool that become hot
during operation.
L4 Lift Point- Identies approved lift points of the Allied work tool.
L5 Operating Pressure – Identies the operating pressure. Refer to the manual
for further information.
L6 Oil Fill - Identies the location for adding oil to reservoir.
L7 Oil Level - Identies the location for checking the oil level.
L8 Company Logo – Is the Allied brand identier and is a registered trademark
of Allied Construction Products, LLC.
L9 Ho-Pac®Product Identication – Ho-Pac is a registered trademark of Allied
Construction Products, LLC used for identifying the hydraulic vibratory plate
compactor / driver.
L10 4000 Model Identication - Identies the model of the Allied work tool.
L11 Made in USA
L12
Equipment Identication – Contains Manufacturer’s Name and Address,
Product Name, CE compliance marking, Model Number, Serial Number,
Year of Manufacture, and Mass
ALLIED 102728
allied 102729

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SAFETY Information – [cont’d]
Fig. S2 - Label Positions Identied 4000 Ho-Pac with FT Frame
Table S.2 Information Labels
Pos Type Description Part No. Qty Remarks / Specications
--- --- Decal Set 574181 1-Set Set includes 1-11
L1 Safety Label - Read Instructions / Manual 676984 2
L2 Safety Label - Stay Clear 840156 2
L3 Safety Label - Hot Surface 676983 1 Located near valve
L4 Safety Label - Lift Point 676982 4
L5 Info Label - Pressure 659140 1
L6 Info Label - Oil Fill 102728 1
L7 Info Label - Oil Level A102729 1
L8 ID Label - Company Logo 676655 2
L9 ID Label - HO-PAC®577554 2
L10 ID Label – Made In USA 815696 1
L11 ID Label - Model 4000 574174 2
L12 ID Plate – Equipment ID 676980 1 L12 Not included in set
4000
4000
R
R

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SAFETY Information – [cont’d]
Qualied Person
For the purposes of this manual, a qualied person is
an individual that has successfully demonstrated or
completed the following:
xHas read, fully understands and adheres to all
safety statements in this manual.
xIs competent to recognize predictable hazardous
conditions and possess the authorization, skills
and knowledge necessary to take prompt
corrective measures to safeguard against
personal injury and/or property damage.
xHas completed adequate training in safe and
proper installation, maintenance and operation of
this Allied equipment.
xIs authorized to operate, service and transport the
Allied equipment identied in Table 1.1.
Safety Information Overview
This manual contains important instructions that
should be followed during installation, operation and
maintenance. When working with the Allied
equipment all procedures and operations must be
performed correctly so that unsafe situations may be
avoided. Do not proceed beyond instructions or
warnings that you do not fully understand. Read the
entire manual to make sure you have a complete
understanding of the requirements. Safety
information becomes operation-specic in the
sections that follow.
Allied has made every effort to provide information as
complete and accurate as possible for this document.
Allied cannot anticipate every possible circumstance
that might involve a potential hazard. The warnings in
this manual and labels afxed to the Allied
attachment are therefore not all inclusive.
General Construction Safety
Always follow procedures that promote safe
conditions for workers and bystanders. The standard
safety precautions expected and required of those
working in construction shall include, but not limited
to:
xLocating existing underground service and utility
lines
xErecting barriers to control entry to established
work zone
xThe use of appropriate personnel protection
equipment.
Federal, State, Local and OSHA Construction
Guidelines and Regulations
Use the Allied equipment in accordance with all
federal, state and local regulations regarding
construction practices and public safety. Identication
of, and compliance to, governing regulations are the
responsibility of the owner and operator.
In the United States, comply with the
recommendations of the Occupational Safety and
Health Administration standards of the U.S.
Department of Labor. For OSHA construction
guidelines contact your local federal government
ofce or write:
U.S. Government Printing Ofce Superintendent of
Documents P.O. Box 371954 Pittsburgh, Pa. 15250-
7954
Website: www.osha.gov
Ask for Construction Industry OSHA Standards Stock
#869-034-00107-6.
Owner’s Responsibilities
Ensure that only qualied personnel operate and
service the Allied equipment.
Ensure appropriate personnel protection equipment
is available to personnel when working in hazardous
conditions and enforce its use
Ensure equipment is kept in safe operating condition
Ensure safety-related materials such as instructions
and including this manual are kept in a convenient
location so that they are easily accessible to
operators and maintenance personnel.
Attention Read the Manual
Read and follow all safety precautions in this
manual. Improper installation, operation or
maintenance of the Allied equipment could result in
serious or fatal injury. Only qualied personnel may
operate and service the Allied equipment. Other
manuals, such as those published by the machinery
used in support of the Allied equipment, should also
be read.

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SAFETY Information – [cont’d]
Operational Safety Program
The safe and efcient use of the Allied equipment
depends upon proper installation, operation,
maintenance and repair. Operational safety programs
must encompass all of these elements.
Accident prevention through operational safety
programs is most effective when the equipment
owner further develops the program by taking into
account his own experience with using and
maintaining equipment.
Developing such programs help minimize equipment
downtime, while maximizing service life and
performance. Most importantly, it will minimize the
risk of personal injuries.
Personal Protective Equipment (PPE)
Personal protection equipment (PPE) shall be made
available to any personnel operating or nearby the
equipment that may be exposed to hazards such as
falling, ying and splashing objects, or harmful dusts,
fumes, mists, vapors, or gases. Approved PPE, when
used correctly, helps protect against certain harmful
effects from exposure with the identied hazard.
Examples of PPE include safety eyewear, safety hat,
hearing protection, dust mask, safety footwear, and
gloves. (Shown Pictograms of PPE is not all-
inclusive).
Those responsible for administering PPE shall train
personnel with the proper selection and use of PPE
to protect against misuse.
Safety Guards and Protective Barriers
A safety guard is a physical barrier designed to
prevent access to danger areas. Guards are tted to
the Allied equipment to protect against unsafe
situations that could not be eliminated through design
measures. Guards are only effective when properly
installed and in place. Guards shall not be removed
unless for the purpose of inspection and service of
components. Reinstall all guards after service or
adjustments are completed.
Where it was not possible to prevent an unsafe
situation by means of a guard, safety messages
appear on the equipment, warning personnel of a
recognized hazard.
Additional guarding, not included with the Allied
equipment, is necessary at the operator’s station to
protect the operator and other nearby personnel
against ying debris from material being cut or
demolished. Do not handle, demolish or cut material
overhead without proper guards installed.
Prevent accidental activation of the Allied work tool
by locating the control switch in a guarded area.
Compatibility and Use With Other Equipment
Allied work tools are designed to deliver satisfactory
performance when used with a broad range of
equipment. In all instances it rst must be conrmed
through adequate research and testing, that the
equipment is suitable to operate the Allied work tool.
The technical data as well as information concerning
connecting requirements can be found in this manual
and shall be strictly observed.
Careful review of the equipment’s specications
along with thorough knowledge of the system’s
operation, including hydraulic and electric is required.
If in doubt, and further assistance is required, it is the
responsibility of the equipment owner to contact their
authorized Allied dealer or Allied’s Product Support
Department.
Unapproved Use or Modications
In order to provide and maintain efcient operation
with reliable service, while ensuring operator safety,
the Allied equipment may not be used for any
purpose other than, for which it was intended. Use of
the Allied equipment, other than those cited in this
manual, may place personnel at risk of injury and/or
may subject the equipment to damage.
When making repairs, use only the manufacturer's
genuine parts. Substitute parts may not meet the
required standards for t and quality, or may impair
function, safety and performance. The Allied
equipment shall not be modied or used in
unapproved applications unless written consent is
received from the Allied Engineering Department.

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TM574173_HP4000_18feb
Contents
Section Page
Document Revisions and Contact Information i
Safety Information……………………...……… ii
Table of Contents…………………….………….. viii
List of Figures…………………………….…...… ix
1.0 About This Manual…………………………… 1
1.1 Purpose of This Manual…………………..…. 1
1.4 Related Publications….............................................
1
2.0 Equipment Identification…………………… 2
2.1 Model and Serial Number Location.……..…. 2
2.2 Equipment Identification Tag………………… 2
2.3 Owner’s Record of Equipment………………. 2
3.0 Warranty Protection Summary……….…… 3
3.1 Overview…….………………………………….. 3
3.2 Owner’s Responsibilities..…………………... 3
3.3 Allied Product Policies….…........................ 4
4.0 Product Overview…..………………………. 5
4.1 Description and Application………………… 5
4.2 Familiarization of Main Components……….. 5
4.3 Principle of Operation…….………………….. 6
5.0 Selection and Application Guide………… 6
5.1 Compatibility With Carrier 6
5.2 Auxiliary Hydraulic Circuit…………………….. 6
6.0 Mounting Information….……………………. 7
6.1 Flat Top Mounting Frame.……………………. 7
6.2 Top Mounting Bracket………………………… 7
7.0 Installation & Removal….…………………… 8
Attach to Carrier……………………………………. 8
Connect Hoses…………………………………….. 8
Section Page
8.0 Operation..…………………………..………… 11
8.1 Pre-operation Checks…………………..…..… 11
8.2 Operation……………………………….……... 11
9.0 Service and Maintenance……………….. 13
9.1 Maintenance Schedule……………………… 13
9.1.1 Schedule Overview……………………..…… 13
9.1.2 Conditional Maintenance…………….… 13
9.2 Safety Precautions………………………….. 13
9.3 Daily Maintenance…………………………….. 14
9.4 Oil Level & Quality of Carrier……….……… 14
9.5 Bearing Lubrication System………………… 14
9.5.1 Pressure Relief Valve……………………... 14
9.5.2 Bearing Lubrication – Oil Type & Capacity 15
9.5.3 How to Check Oil Level……………..…….. 15
9.5.4 How to Drain Oil………………..….……….. 15
9.6 How to Check Condition of Bearings…….…. 16
9.6.1 Bearing Replacement……………………… 16
9.6.2 Bearing Removal……………………..…... 16
9.6.3 Bearing Installation………..…………….… 16
9.7 Spring Mount Replacement………………... 17
9.8 Threaded Fasteners – Replacement……….. 17
9.8.1 Bolts – Tightening Method & Torque…….. 18
9.9 Hydraulic Motor & Valve Service……………. 18
10.0 Handling, Transport & Storage……..…… 19
10.1 Lifting & Transport…………………………… 19
10.1.1 Transport Independent of Carrier………… 19
10.1.2 Transport Attached to Carrier…………….. 19
10.2 Storage Preparations……………………….. 19
11.0 Troubleshooting……………………..……... 20
12.0 Technical Information……………………… 21
12.1 Testing the Hydraulic Circuit……………….. 21
12.2 Oil Pressure Test…………………………….. 22

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Contents – [cont’d]
Section Page
12.2.1 How to Measure Oil Pressure…………….. 22
12.3 Denition of Hydraulic Terms………………. 22
12.4 Hydraulic Motor Options……………………. 23
12.4.1 Motor Rotation……………………………… 23
12.4.2 Motor and Valve Combination…………… 24
12.4.3 Valve Function…………………………….. 24
12.4.4 Valve Adjustments……………………….. 24
12.5 General Specications……………………… 25
12.6 Dimension Diagrams………………………… 26
13.0 Parts Information……………………..…… 27
13.1 General………………………………………… 27
13.2.Spare parts for Motor and Valve…………… 28
13.3 Spare Parts – Dynamic Assembly…………. 29
13.4 Spare Parts – Top Frame & Hydraulic…….. 30
List of Tables Page
S1 Safety, Identication & Information Labels…. iv
S2 Label Identication On Allied Equipment…… v
1.1 About This Manual……………………………. 1
6.1 Mounting Bracket For Top Frame……………. 7
9.1 Maintenance Schedule………………………. 13
9.2 Fastener Tightening Torque…………………. 18
12.1 General Specications……………………… 25
13.1 Motor and Valve Information………………. 28
13.2 Dynamic Assembly…………………………. 29
13.3 Top Frame and Hydraulic Components…… 31
List of Figures Page
S Pictograms, Labels, Label positions, PPE….. ii-vii
2-1 Location of ID Tag……………………..….…. 2
2-2 Information Contained on Identication Tag 2
4-1 Main Components….…………………….…. 5
5-1 Allied Conversion Kits……………………….. 6
6-1 Flat Top Mounting Frame……………….…… 7
6-2 Typical Mounting Bracket ..…………………. 7
7-1 Hose Connections [IN] and [OUT]…………. 9
List of Figures Page
7-2 Valve and Motor Hose Connections…….. 9
7-3 Proper Hose Routing………………………… 9
9-1 Lubrication Labels Identified……..………… 15
9-2 Oil Fill & Level Plugs Location Identied….. 15
9-3 Oil Level – Maximum…………………………. 15
9-4 Spring Mount and Install Fasteners…………. 17
9-5 Tightening Sequence for Bolted Assemblies 18
9-6 Bolts Assembled With Thread Locker…….. 18
12-1 Flow-Pressure Diagram………………...….. 23
12-2 Motor Rotation.………………….……..…….. 23
12-3 Part Number Identication of Valve…..….. 24
12-4 Hydraulic Port Connections Identied……… 24
12-5 Dimension Diagram……………….…….….. 26
13-1 Motor Dimension – Measure ‘L’ ………….. 28
13-2 Valve Part Number – Location Identied…. 28
13-3 Dynamic Assembly Parts Identication….. 28
13-2 Top Frame & Hydraulic Components….…… 26

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TM574173_HP4000_18feb
Introduction & Scope
1.1 About This Manual
All information contained herein, including text,
gures, captions, tables and descriptions is intended
solely for use with the product identied in Table 1.1.
Prior to its use, conrm that the information recorded
on the Equipment’s Identification Tag corresponds
with the model information located in Table 1.1.
Table 1.1 About This Manual
Document ID No. TM574173
Type Technical - Safety, Operation,
Maintenance and Parts
Current Status See Inside Cover
Product Name: Ho-Pac®
Generation (Series) III
Applicable Model[s]: 4000
Years of Manufacture: Begin 2008
Material presented in this manual may show
equipment that is optional.
The content of this document has been reviewed for
accuracy. Allied Construction Products, LLC has
endeavored to deliver the highest degree of accuracy
and every effort has been made to provide
information as complete as possible. However,
continuous improvement of our products is an Allied
policy. The material in this publication, including
gures, captions, descriptions, remarks and
specications, describe the product at the time of its
printing, and may not reect the product in the future.
A summary of changes made to the content of this
document is provided on the inside cover.
1.2 Purpose of this Manual
This manual has been prepared in support of the
product named in Table 1.1 and is intended to assist
the operator and maintenance personnel with the
information necessary for the safe and proper use of
the Allied equipment.
This manual includes a spare parts list. Figures
shown in the Parts Information Section of this Manual
are for the purpose of parts identication and not
intended for use in the repair or service of the
equipment.
This document is published solely for information
purposes and should not be considered all-inclusive.
If further information is required, contact your local
Allied dealer or Allied Customer Service.
1.3 How to Order Replacement Publications
This manual is an integral part of this product. Keep it
in a convenient location so that it is easily accessible
for future reference.
Replacement manuals can be ordered by contacting
your local Allied dealer or Allied Customer Support.
See inside cover for contact information.
1.4 Related Publications
Related publications for the product identied in
Table 1.1 include the following:
1.4.1 Compaction Handbook 103392
The Compaction Handbook contains:
xBackground information about soil, soil
compaction and basic overview of different types
of soil compaction equipment.
xGeneral information about operating techniques
for vibratory plate compactors / drivers
xPerformance data for Ho-Pac models derived
from eld tests.

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TM574173_HP4000_18feb
2.0 Equipment Identification
2.1 Model & Serial Number Location
Fig. 2-1 Equipment Identication
Refer to Figure 2-1. The Model and Serial Number
assigned to this equipment is found on the
Equipment ID Tag. The serial number is also
stamped in the housing weldment – motor side.
2.2 Equipment Identification Tag
Refer to Figure 2-2. The Equipment Identication Tag
is afxed to the top mounting frame. It provides the
following useful information:
xManufacturer’s Name and Address
xProduct name
xModel and Serial number
xYear of manufacture
xMass
Fig. 2-2 Equipment ID Tag
Verify that the information contained on the Tag
corresponds with the information provided in Section
1 of this manual.
2.3 Owner’s Record of the Equipment
Your local Allied dealer requires the Product Name,
Model and Serial Number to better assist you with
questions regarding parts, warranty, operation,
maintenance, or repair. This information should be
copied from the Equipment Identication Tag to the
space provided below.
Ho-Pac®Model
4000 X
Serial Number:
In service date:
xIndicate the date in which the Allied equipment
was placed into service.
xReturn the completed Warranty Registration form
to Allied Construction Products, LLC.
Part number varies with top frame configuration
Flat-top LR9 Part No. 573600C
Other
Motor Option – GPM
62
86

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TM574173_HP4000_18feb
3.0 Warranty Protection Summary
3.1 Overview
The Allied work tool is delivered assembled,
lubricated, and factory tested. Upon receipt of the
equipment, inspect for possible shipping damage.
With all new Allied equipment, it is important to
complete all sections the Warranty Registration form
and return to Allied.
Warranty does not cover failures of the equipment
resulting from incorrect installation, misuse,
alterations by person other than authorized agents,
abnormal operating conditions, use of non-Allied
parts, unapproved service methods, or missed
maintenance requirements.
For details regarding warranty terms and conditions,
refer to document A100668.
3.2 Owner’s Responsibilities
When properly installed, operated and maintained by
qualied personnel, the Allied work tool will remain
productive with a minimum of service.
Keep the Allied equipment operating within its
performance limits by familiarizing yourself with the
specications provided in the technical data and
specications tables. Improper installation, including
failure to calibrate the carrier correctly may result in
loss of performance or subject the equipment to
conditions beyond their design.
The following outlines general maintenance policies
required for the Allied equipment. The owner is
strongly encouraged to adopt these general
guidelines and further develop them in order to
manage particular applications and operating
environments.
Ensure that personnel entrusted with installation,
operation, maintenance and transporting of the Allied
equipment adhere to the following:
xRead and thoroughly understand the information
and procedures detailed in this manual.
xUnderstand proper operating techniques for all
recommended applications.
xUse the Allied attachment only if it is in sound
operating condition. Take prompt action to rectify
any faults that, if left uncorrected, could lead to
personal injury or further damage.
xUse the Allied attachment only for the purpose for
which it is intended.
xUnderstand that particular applications, such as
working underwater, will require modications to
the standard breaker and additional training for
operation and service.
xAppoint Who Does What. Ensure that all
personnel understand what their specic
responsibilities include.
1. Establish maintenance responsibilities to be
performed by the OPERATOR.
2. Establish maintenance responsibilities to be
performed by the SERVICE TECHNICIAN.
xRecognize faults with the work tool and know
what corrective actions to take.
xConduct regular checks and inspections as
scheduled in the Care & Maintenance Section.
xAllow only qualied operators and Allied trained
service technicians to perform maintenance and
repair as specied in the care and maintenance
schedule.
xUse only genuine Allied replacement parts and
recommended lubricants to protect total warranty
coverage.
xMaintain written records of equipment
maintenance, service and repair. These records
are helpful if warranty coverage is ever in
question.
xWritten records shall include at least:
xDate of service, maintenance or repair.
xDescription of the service, maintenance or
repair performed. Include part numbers if
applicable.
xCopies of purchase order(s) and invoice(s)
for repair parts and service.
xThe name and signature of the person
performing the service, maintenance or
repair.

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TM574173_HP4000_18feb
3.0 Warranty Protection Summary [cont’d]
3.3 Allied Product Policies
In this manual, Allied recommends the use,
applications, maintenance and service consistent
with industry practices.
Allied assumes no responsibility for the results of
actions not recommended in this manual and
specically the results of:
xImproper installation, set-up, calibration
xCarelessness / Incorrect operating methods
xInattention to re-lubrication and other
maintenance requirements
xMisuse / Unapproved applications
xInadequate or absence of training
xUse of non-genuine Allied replacement parts
xUnapproved modifications
xUse of grease, which is not or is only
conditionally pumpable
xThe use of a lubricant type that is unsuitable for
the application.
xContaminated lubricants.
xImproper disposal of used or contaminated
lubricants.
The product is excluded from warranty if any of the
above conditions result in damage to the Allied
equipment, or the associated equipment or injury to
personnel. Such conditions will be determined by
Allied at its sole unfettered discretion.

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TM574173_HP4000_18feb
4.0 Product Overview
4.1 Description
The Allied Ho-Pac® is a hydraulic powered, vibratory
plate compactor and driver. It is designed for
mounting on mobile equipment with hydraulic booms,
such as rubber tired or track-type construction
vehicles. The boom mounted Ho-Pac reaches out to
work anywhere the machine can reach and allows
the operator to keep a safe distance from the work
tool.
4.1.2 Application and Use - Typical
The Ho-Pac is used for soil compaction. Applications
include backll compaction, base course preparation,
nish surface treatment and embankment buildup.
The Ho-Pac can also be an effective sheet or pile
driver. Vibration energy is transferred through the
sheet or pile to the soil. Soils with 50% or more
granular content are “liquefied” by the vibration,
which breaks the skin friction, allowing the sheet or
pile to penetrate more easily. Further information is
available in the “Compaction Handbook”. To request
a copy, contact your local dealer or Allied’s Customer
Service. Ask for part number 103392.
4.2 Familiarization of Main Components
Fig. 4-1 Main Components
1. Dynamic Assembly – Consists of the housing
weldment, eccentric mass, bearings and rubber
springs.
2. Suspension System – Rubber Springs mounted
between the Top Frame and Dynamic Assembly
isolate the vibratory energy from the carrier.
3. Top Frame – The Top Frame serves as the
connection point used to attach the Ho-Pac to the
stick / linkage of the carrier.
4. Control Valve – A multi-function valve used for
controlling the motor. Benets include optimized
operation with improved reliability of critical
components such as the motor and bearings.
NOTE:The valve is factory pre-set and requires no
further adjustments.
The control valve performs the following functions:
xFlow regulator – Protects the bearings from
excessive loads by limiting oil ow that can over-
speed the hydraulic motor.
xPressure control – Protects the hydraulic
components from over-pressure. This is factory
pre-set at the maximum operating pressure plus
200 psi (14 bar).
xAnti-cavitation circuit - Controls deceleration of
the hydraulic motor and eccentric mass. Also
protects the motor against damage if the return
circuit is not set up with an unrestricted, free-
owing open return.
xReturn line check valve - Prevents reverse ow
to the hydraulic motor. Also provides a nominal
back-pressure to ensure the proper operation of
auxiliary valves, such as Allied’s AC40 and AC75
priority ow control valves.
4.3 Principle of Operation
The vibratory action and impulse force are generated
from the hydraulic motor turning the eccentric mass
at a high rate of speed. The strength of vibration is
affected by the rotation speed of the motor, weight of
the eccentric mass and the off-center distance
between eccentric mass and shaft.
The vibratory action and impulse force is transferred
through the attached compaction plate.
Efcient compaction of granular type soils is further
aided by the downward static pressure exerted by the
weight of the carrier pressing against the rubber
springs.

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TM574173_HP4000_18feb
5.0 Product Selection and Application Guide
5.1 Match Compactor Type to the Application
The Allied Ho-Pac is a vibratory plate compactor,
designed for mounting on mobile equipment with
hydraulic booms, such as rubber tired or track-type
construction vehicles. It is best suited for compacting
granular type soils by combining three actions:
xImpulse Force
xVibration Frequency
xDown Pressure (Static Weight)
5.1.2 Ho-Pac and Carrier Compatibility
The Allied work tool is designed to provide
satisfactory operation with reliable service life when
teamed with a compatible carrier. Balance the size of
the Ho-Pac with the size of the carrier. If too small for
the carrier, the compactor will be damaged by the
carrier. Conversely, too large a compactor can
damage an undersized carrier.
5.1.3 Other Considerations
xReach - Select a carrier size having sufcient
reach to compact the deepest area of the trench
or excavation. This will also help minimize the
frequency of repositioning the carrier.
xLift Capacity - Know how your machine is
equipped and if any modications have been
made. Factors such as boom type, stick length,
undercarriage, tracks, counterweights, etc., all
affect the lifting capacity of the carrier. Also take
into account any add-ons, such as a quick attach
coupler. Consult the carrier manufacturer's
manual for specications.
xHydraulic Circuit - Select a carrier equipped
with a one-way hydraulic circuit and unrestricted
free owing return. It must maintain adequate
ow and pressure without loss of hydraulic power
to the Ho-Pac when carrier applies down-
pressure. If not, motor speed slows and soil
density targets won't be reached.
Undersized compactors (as well as underperforming
compactors) are less economical to use because
compaction is limited to smaller lifts and require
additional passes. This generates other inefciencies
as longer running cycles result in loss of time,
increased energy consumption and component wear.
Optimum efciency is achieved only when proper
operating technique is employed. How many passes
it will take, along with the duration, will vary with
material type and lift. Additional ll material and
repositioning of the carrier may be required to
achieve a nished surface.
5.2 Auxiliary Hydraulic Circuit
CAUTION
Hydraulic circuits differ between
machines. Improper oil ow or pressure
can damage the Ho-Pac or carrier.
Only qualied personnel, having knowledge of the
machine’s systems, proper test equipment and tools
should perform conversion set-up and adjustments.
The Allied Ho-Pac is a hydraulic-driven work tool that
is not self-powered. Satisfactory performance centers
on the hydraulic circuit of the host machine to deliver
proper ow and pressure requirements.
Generally, most machines will require some degree
of conversion to make use of their hydraulic power.
Conversions to machines equipped with a factory or
dealer installed auxiliary circuit, however, may require
little more than minor adjustments to ow and
pressure settings.
Carefully follow all instructions, including those
provided by the machine manufacturer, when making
adjustments.
5.3 Allied Auxiliary Conversion Kits
Fig 5-1 Allied Conversion Kit with AC-Series Valve
Allied conversion kits are available for almost any
carrier. For machines without an auxiliary hydraulic
circuit, the kit may include an "AC" series valve.
These solenoid-operated valves will control ow and
pressure to the work tool.
Requests for further information or assistance with
Ho-Pac selection or conversion kits should be
directed to your Allied dealer or by contacting Allied
Sales or Product Support Departments.

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TM574173_HP4000_18feb
6.0 Mounting Information
6.1.2 Flat–Top Frame and Mounting Bracket
Fig. 6-1 Flat-Top Frame Fig. 6-2 Mounting Bracket – Pin-on Design
6.1.1 Flat-Top Frame
The design of the Top Frame is illustrated in Fig. 6-1.
With the bucket removed from the carrier and the
mounting bracket (Fig. 6-2) bolted to the top frame,
the Ho-Pac is ready to be attached to the carrier.
6.1.2 Mounting Bracket for Flat–Top Frame
A pin-on style of mounting bracket is illustrated in Fig.
6-2. The mounting bracket is bolted to the connection
plate located at the upper end of the frame.
Dimensions of the connection plate, including
thickness, spacing, quantity and diameter of the bolt
holes, will vary between small, medium and large
size Allied attachments. Connection plates are
separated by size and grouped into Allied mounting
families.
Mounting brackets are interchangeable for use with
other Allied work tools, including hydraulic breakers
that share the same bolt pattern family.
Allied offers an array of bolt-on mounting brackets to
t virtually any carrier, including those equipped with
pin-grab or hook-type mounting couplers. The
carrier’s bucket pins will be used whenever possible.
IMPORTANT
The Ho-Pac does not include a mounting bracket.
Order separately. Bracket design is carrier
specic. The carrier’s bucket pins will be used
whenever possible. Ordering requires complete
information about the carrier, including make,
model, series and serial number. If equipped with
a quick coupler, additional information is required.
Make, model, series and serial number.
In Table 6.1, the mounting ‘Family’ designates a
sizing system used by Allied to identify various
connection plates. Other Allied work tools, including
the Hy-Rambreakers, share these same mounting
Families.
Figures and descriptions represent standard
congurations.
Table 6.1 Mounting Bracket for Flat Top Frame
Flat-Top Frame Mounting Bracket Bolt Set
Mounting Family LR9 LR9 Included with Ho-Pac
The mounting bracket is not included with the Ho-Pac. Order separately.

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TM574173_HP4000_18feb
7.0 Installation & Removal
7.1 Attach the Allied Equipment to Carrier
With the bucket removed and the mounting bracket
bolted to the top frame, the Ho-Pac can be attached
to the carrier. Installation can vary, but the mounting
procedures are similar to mounting a bucket. Use
standard mechanic’s techniques and tools.
7.1.2 Tools Required to Mount Ho-Pac On Carrier
No special tools are required, but the following tools
should be available:
xPPE including Safety eyewear & gloves
xSledge Hammer
xDrift pin / Alignment bar
x3/4 drive socket wrench
x3/4 drive metric sockets
xGrease gun
xStandard & Metric open end wrenches
xRags
xSuitable container to collect fluids
7.1.3 Install Procedure – Typical
CAUTION
Personal protection equipment required
when handling. PPE should include
appropriate clothing, gloves, safety
eyewear and shoes.
CAUTION
Both operator and assistant must be
qualied in handling procedures. The
operator must have an unobstructed
view of the assistant and load at all
times. The operator shall maintain
full control of the machine at all
times.
Crush hazard. Keep clear of crush
points and moving parts. All
directions and signals must be
agreed upon in advance. Take
signals from only ONE person.
The following describes basic procedures used to
attach the Ho-Pac to a machine equipped with a
typical pin on type mounting arrangement.
Procedures may vary and you should always follow
the instructions in the manual that is provided by the
carrier manufacturer. For carriers equipped with a
quick coupler, refer to the owner’s manual furnished
by the coupler manufacturer for instructions.
The machine operator and an assistant shall perform
the following procedure:
1. Operator: Move carrier and Ho-Pac to a rm level
surface. Position the Ho-Pac with the hose side
facing toward the carrier.
2. Assistant: Check that the Ho-Pac is stable and all
loads are supported.
3. Operator: Maneuver the stick in between lugging
of the mounting bracket. Align the stick pin holes
to the holes in the mounting bracket.
4. Assistant: Clean pins of rust and debris before
they are installed. Insert the stick pin and secure
with keepers.
5. Repeat procedure for installing link pin.
6. Lubricate pins.
7.2 Connect Pressure and Return Lines
CAUTION
Hydraulic circuits differ between
machines. Improper set up can
damage the Ho-Pac or carrier. Only
qualied personnel, having knowledge
of the machine’s systems should
install.
Identify whether the carrier's pressure line is located
on the right-hand or left-hand side. Do not guess. The
Ho-Pac will not operate if these hoses are crossed.
IMPORTANT
Read, understand and follow the instructions included
with the installation kit. The installation is not complete
until the hydraulic circuit is tested for ow and
pressure. Tools required for testing include a ow
meter and pressure gages. Test procedures, along
with a form to record the results of the ow test, can
be found in the Technical Data section of this manual.
Questions regarding testing procedures should be
directed to Allied Technical Service.
IMPORTANT
Contamination can diminish service life. Prevent
contaminating the oil. Always clean the area around
connections prior to opening the hydraulic system.

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TM574173_HP4000_18feb
7.0 Installation & Removal – [cont’d]
IMPORTANT
Collect uids in a suitable container. Clean up spilled
uids and obey all local regulations for the disposal
of these uids.
IMPORTANT
The Ho-Pac will not operate if supply and return
hoses are crossed.
Fig 7-1 Hose Connections [IN] and [OUT] Identied
1. Connect Supply [IN] and Return [OUT] hoses to
carrier’s hydraulic circuit.
Fig. 7-2 Pressure Line, Valve port [P1] & [T2]
Identied
IMPORTANT
The control valve is attached to the mounting frame.
The part number of the valve can be found stamped
into the body above connection port T2.
2. Raise the work tool off the ground and operate
the bucket cylinder to ensure hoses will not be
pinched or restricted.
3. Briey test for proper operation. Tighten hoses
and connections as necessary.
Fig. 7-3 Check hose length & routing for unrestricted
movement
7.3 Removal From Carrier
CAUTION
Fluid penetration hazard. Release
pressure trapped in hoses before
disconnecting. Wear appropriate
protective equipment including safety
eyewear and gloves.
CAUTION
Both operator and assistant must be
qualied in handling procedures. The
operator must have an unobstructed
view of the assistant and load at all
times. The operator shall maintain
full control of the machine at all
times.
Crush hazard. Keep clear of crush
points and moving parts. All
directions and signals must be
agreed upon in advance. Take
signals from only ONE person.
IN OUT

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TM574173_HP4000_18feb
7.0 Installation & Removal – [cont’d]
CAUTION
Hot surface - Burn injury if contacted.
Some components of the machinery
become hot during operation. Allow parts
and uids to cool before handling.
IMPORTANT
Collect uids in a suitable container. Clean up spilled
uids and obey all local regulations for the disposal
of these uids.
1. Position work tool on stable ground.
2. Disconnect hydraulic connections.
3. With loads adequately supported, remove
mounting pins and hardware.
4. Keep mounting hardware with Allied equipment
to avoid loss or damage.