Allied HO-PAC 400B Guide

Thoroughly read and understand the content of this manual before using the Allied HO-PAC. The safe and
efficient 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.
TM577696
Ho-Pac
Vibratory Plate
Compactor /
Driver
Model
400B
Safety, Operation, Maintenance and Parts

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i
TM577696HP400B_16aug
Contact Information
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 specifications without prior notification. The content of this publication
describe the product at the time of its effective date, and may not reflect the product in the future. Specifications 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Earlier dated publications are immediately cancelled and superseded by publications with the most current date recorded.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 conflict 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. TM577696.
The date of the revision is shown at the bottom
of each page.
Table of Revision History for TM577696
Effective Date
Page
Summary of Change
2016, Aug
26
Updated Parts list (hoses, adapters)
2015, Jan
All
Original Issue of TM577696

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TM577696_HP400B_16aug
ii
Safety Information
Safety Statements and Hazard Alerts
Safety messages appear throughout this manual and
on labels affixed 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 fluids 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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TM577696_HP400B_16aug
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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 affixed to the Allied equipment, pictograms are
defined 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
Identifies lift point
Personal Protection Equipment
Hearing protection
Safety eyewear
Gloves
Safety shoes
Falling object
Unsupported loads
Crush point / Falling part
 Falls into open excavations
 Trench 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 identified
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 REFILL HERE

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Safety Information – [cont’d]
Safety, Identification and Information Labels
Information labels affixed to the Allied equipment
include safety warnings, identification 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-3”
for their location on the equipment.
Table S.1 Labels
Fig
Label
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 - Identifies surfaces of the Allied work tool that become hot
during operation.
L4
Lift Point- Decal identifies approved lift points of the Allied work tool.
L5
Pressure Line Tag – A red colored cable tie marked “PRESSURE IN” is
attached to the SUPPLY hose of the Allied work tool for ease of
identification between hoses.
L6
Company Logo – Is the Allied brand identifier and is a registered
trademark of Allied Construction Products, LLC.
L7
HO-PAC®
Product Identification – HO-PAC is a registered trademark of Allied
Construction Products, LLC used for identifying the hydraulic vibratory
plate compactor / driver.
L8
400B
Model Identification - Decal indicates the model of the Allied work tool.
L9
Made in USA
L10
Equipment Identification - Manufacturer’s Name and Address, Product
Name, CE compliance marking, Model Number, Serial Number, Year of
Manufacture, and Mass

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TM577696_HP400B_16aug
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Safety Information – [cont’d]
Fig. S-3 Label Positions
Table S.2 Information Labels
Item
Type
Description
Part No.
Qty
Remarks / Specifications
---
---
Decal Set
577555
1-Set
Set includes 1-8
L1
Safety
Label - Read Instructions / Manual
676984
2
L2
Safety
Label - Stay Clear
676981
2
L3
Safety
Label - Hot Surface
676983
1
L4
Safety
Label - Lift Point
676982
4
L5
Info
Tag - Pressure I.D.
818676
1
Located on Supply Line
L6
ID
Label - Allied Logo
676653
2
L7
ID
Label - HO-PAC®
577554
2
L8
ID
Label - Model 400B
577691
2
Items L8, L10 Not included in set
L9
ID
Label – Made In USA
815696
1
L10
ID
Tag – Equipment ID
676980
1
Items L8, L10 Not included in set
400B

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Safety Information – [cont’d]
Qualified Person
For the purposes of this manual, a qualified person is
an individual that has successfully demonstrated or
completed the following:
 Has read, fully understands and adheres to all
safety statements in this manual.
 Is 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.
 Has completed adequate training in safe and
proper installation, maintenance and operation of
this Allied equipment.
 Is authorized to operate, service and transport the
Allied equipment identified 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-specific 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 affixed 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:
 Locating existing underground service and utility
lines
 Erecting barriers to control entry to established
work zone
 The 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. Identification
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
office or write:
U.S. Government Printing Office 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 qualified 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 qualified 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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vii
Safety Information – [cont’d]
Operational Safety Program
The safe and efficient 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, flying 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 identified 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 fitted 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 flying 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 first must be confirmed
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.
Since carrier hydraulic circuits differ and options vary,
careful review of the equipment’s specifications 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 Modifications
In order to provide and maintain efficient 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 fit and quality, or may impair
function, safety and performance. The Allied
equipment shall not be modified or used in
unapproved applications unless written consent is
received from the Allied Engineering Department.

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viii
Table of Contents
SECTION
Page
Contact Information & Document Revisions
i
Safety Information……………………...…..……
ii
Safety Statements & Hazard Alerts....……..……
ii
Purpose of Safety Messages……………....……
ii
Safety Alert Symbol ..……………..………
ii
Signal Words – “DANGER”, “WARNING” and
“CAUTION”……………………………….………
ii
Non-hazardous Type Messages……………..…
ii
Meaning of Pictograms Used in This Manual…
iii
Safety, Identification and Information Labels
iv
Qualified Person………………………..………
vi
Owner’s Responsibilities……………...…..……
vi
General Construction Safety…………..….
vi
Federal, State, Local and OSHA Construction
Guidelines and Regulations…………………....
vi
Operational Safety Program………………..…..
vii
Personal Protective Equipment (PPE)…………
vii
Protective Equipment - Guarding………………
vii
Unapproved Equipment Modifications…………
vii
Table of Contents…………..…………...……..
viii
List of Figures….………………….…….…...…
ix
1.0 Introduction & Scope……..………..………
1
1.1 Purpose of This Manual…………..…….….
1
1.2 About This Manual………………….…….…
1
1.3 How to Order Replacement Publications…
1
1.4 Related Publications………………………...
1
2.0 Product Identification………………….…..
2
2.1 Where to Find the Serial Number…………
2
2.2 Equipment Identification Tag…………..…..
2
2.3 Owner's Record of the Equipment…………
2
3.0 Warranty Protection Summary………...…
3
3.1 Overview…….…………………….…...……..
3
3.2 Owner’s Responsibilities..………….…….....
3
SECTION
Page
3.3 Allied Product Policies………..……………....
4
4.0 Product Information.………………….…….
5
4.1 Description and Application………..…...…
5
4.2 Familiarization of Major Subassemblies….
5
4.3 Principle of Operation…………….……..…..
5
5.0 Ho-Pac Selection and Application....….….
6
5.1.1 Match Compactor Type w/ Application….
6
5.1.2 Size the Ho-Pac to the Carrier……..…….
6
5.1.3 Other Carrier Criteria………………………
6
5.2 Carrier With Auxiliary Hydraulic Circuit……
6
5.3 Conversion Kits……………………………..
6
6.0 Mounting Information….…………………..
7
6.1 Mounting Frame and Bracket…….…..….….
7
7.0 Install / Uninstall Work Tool………..…..…
9
7.1 Attach Work Tool to carrier….….……..……
9
7.1.2 Tools Required…………….….…………..
9
7.2 Connect Supply & Return Lines....….……..
9
7.3 Remove Work Tool From Carrier………….
10
8.0 Operation..………………………..…………
11
8.1 Pre-operation Checks………….….……..…
11
8.2 Operation………………..…………………...
11
9.0 Care & Maintenance….......…………..
13
9.1 Maintenance Schedule…………..……
13
9.2 Safety Precautions During Inspection
13
9.3 Daily Maintenance………………………
14
9.4 Check Carrier's Oil Level & Quality…..
14
9.5 Threaded Fasteners……….………...…
14
9.6 Conditional Maintenance…………….…
14
9.7.1 Bearing Lubrication……………..…..……
15
9.7.3 Bearing Replacement………………..…...
15

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ix
Table of Contents - [cont’d]
SECTION
Page
9.7.4 Bearing Removal………………..……….
15
9.7.5 Bearing Installation……………..…..….…
15
9.8 Spring Mount Replacement………..…....…
15
9.9 Tightening Torque…………………...….…..
16
10.0 Lifting, Transport & Storage…………....
18
10.1 Lifting & Transport Precautions….....……
18
10.2.1 Transport Independently of Carrier…...
18
10.2.2 Transport Attached to Carrier……....….
18
10.3 Storage…….…………….…..……………..
18
11.0 Troubleshooting……………….…….…...
19
12.0 Technical Information……………………
20
12.1 Testing the Hydraulic Circuit……….…..….
20
12.2 Oil Pressure Check……………………….
21
12.3 How To Measure the Oil Pressure…..…..
21
12.4 Definition of Hydraulic Terms…………….
21
12.5 Motor Options………………………………
22
12.5.1 How to Identify the Different Motors….
22
12.6 Motor & Valve Combination….……..…...
23
12.7 Control Valve Adjustment, Function,
Identification & Port Connections………….….
23
12.7.1 Control Valve Adjustment……………..
23
12.7.2 Control Valve Function…………………
23
12.7.3 Control Valve Identification & Port
Connections……………………………………..
23
12.8 General Specifications..………..…..……..
24
12.9 General Dimensions……………………..
24
13.0 Spare Parts Information…………………
26
List of Figures
Page
S1 Safety Alert Symbol……………..…………
ii
S2 Safety Message Presentation – Typical…..
ii
Pictograms………………………..…………….
iii
Read Instructions……………………………….
iv
Stay Clear………………………….……………..
iv
Hot Surface………………………………………..
iv
Lift Point….……………………..………………..
iv
Pressure Line……..………………………….…..
iv
Model Identification……………………………..
iv
Equipment Identification Tag……………..……
iv
S-3 Placement of Labels on Equipment…
v
2-1 Location of Equipment Serial Number
2
2-2 Equipment Identification Tag………….
2
4-1 Major Subassemblies……………...….
5
5-1 Allied Conversion Kit with AC Series Valve
6
6-1 Flat Top Frame and Mounting Bracket…...
7
6-2 XSF Top Frame……………………………
7
7-1 Supply & Return Hose Connection………
10
7-2 Hose Routing Restriction Check……………
10
9-1 Position of Threaded Fasteners…………..
16
9-3 Bolt Head Markings………………………..
16
9-4 Tightening Sequence…………………….
17
12-1 Flow-Pressure Diagram……….……..…..
22
12-2 Motor Rotation…………………..…………
23
12-3 Valve Identification……………………….
23
12-4 Hose Connections……………………….
23
12-5 General Dimensions – Flat Top Frame...
25
13-1 Parts View – Std. 400B Ho-Pac………….
26
13-2 Parts View – Dynamic Assembly……….
27
13-3 Parts View – Motor…………………………
28
13-4 Parts View – Valve……………………….
28
List of Tables
Page
Revision History of Publication……………….
i
S1 Label Identification and Meaning…………
iv
S2 Label Position Ordering Information……..
v
1.1 About This Manual………………………….
1
6.1 Flat Top Mounting Hardware………………..
7
6.2 XSF Mounting Kits………………………….
8
9.1 Maintenance Schedule……………….…….
13
9.2 Tightening Torque – Threaded Fasteners
16
12.1 Hydraulic Motor Options…………………
22
12.2 Specifications – General…………………
24
13.1 Parts Identification……………………….
26
13.2 Parts Identification – Dynamic Assembly
27
13.3 Parts Identification – Motor & Valve…….
28

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1
1.0 Introduction & Scope
1.1 Purpose of this Manual
All information contained herein, including text,
figures, captions, tables and descriptions is intended
solely for use with the product identified in Table 1.1.
Prior to its use, confirm that the information recorded
on the Equipment’s Identification Tag corresponds
with the model information located in Table 1.1.
1.2 About This Manual
Table 1.1 About This Manual
Document ID No.
TM577696
Type
Technical - Safety, Operation
and Maintenance
Current Status
See Inside Cover
Product Name:
Ho-Pac
Generation (Series)
III
Applicable Model[s]:
400B
Years of Manufacture:
Begin 2015
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
figures, captions, descriptions, remarks and
specifications, describe the product at the time of its
printing, and may not reflect 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 identification 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 identified in
Table 1.1. include the following:
1.4.1 Manual PN-103467 Swivel Option
The optional swivel assembly permits precise
positioning of the Ho-Pac without repositioning of the
carrier. Turning the swivel is done manually. Content
in the Manual includes:
 Safety Information
 Applications/Intended Use
 Mounting Information
 Attaching To/From Carrier
 Technical Data/General Dimensions & Weights
 Pre-use Inspection
 Operation
 Maintenance/Lubrication/Repair
 Troubleshooting
 Lifting, Transport & Storage
 Spare Parts Information
1.4.2 Compaction Handbook 103392
The Compaction Handbook contains:
 Background information about soil, soil
compaction and basic overview of different types
of soil compaction equipment.
 General information on operating techniques for
vibratory plate compactors / drivers
 Performance data for Ho-Pac models derived
from field tests.

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2
2.0 Equipment Identification
2.1 Location of the Serial Number
Fig. 2-1 Equipment Identification
Refer to Figure 2-1. The Serial Number assigned to
this equipment can be found in the following
locations:
1. On the Equipment ID Tag
2. Stamped in the lower assembly – motor side.
2.2 Equipment Identification Tag
Refer to Figure 2-2. The Equipment Identification Tag
is affixed to the top mounting frame. It provides the
following useful information:
 Manufacturer’s name and Address
 Product name
 Model number
 Serial number
 Year of manufacture
 Mass
Fig. 2-2 Equipment Identification 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 Identification Tag to the
space provided below.
 Indicate the date in which the Allied equipment
was placed into service.
 Fill out the Warranty Registration form and return
to Allied Construction Products, LLC.
Product Name:
Ho-Pac
Model:
400B
*Part Number:
577685C IN1,2/XR
*Part Number:
577695C FXS
Serial Number:
In Service Date:
Registration Date:
*Part number varies with top frame configuration
400B
Model (Weight approx.)
B
Sealed Bearings
IN1
Frame Type – Flat Top w/ Hole Patterns
IN2
FXS
Frame Type – Fixed Size Mini-X
C
Configure Motor Size Option
Motor GPM Option – Indicate for your records
6 GPM
9 GPM
14 GPM
18 GPM

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3
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
qualified 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
specifications provided in the technical data and
specifications 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:
 Read and thoroughly understand the information
and procedures detailed in this manual.
 Understand proper operating techniques for all
recommended applications.
 Use 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.
 Use the Allied attachment only for the purpose for
which it is intended.
 Understand that particular applications, such as
working underwater, will require modifications to
the standard breaker and additional training for
operation and service.
 Appoint Who Does What. Ensure that all
personnel understand what their specific
responsibilities include.
1. Establish maintenance responsibilities to be
performed by the OPERATOR.
2. Establish maintenance responsibilities to be
performed by the SERVICE TECHNICIAN.
 Recognize faults with the work tool and know
what corrective actions to take.
 Conduct regular checks and inspections as
scheduled in the Care & Maintenance Section.
 Allow only qualified operators and Allied trained
service technicians to perform maintenance and
repair as specified in the care and maintenance
schedule.
 Use only genuine Allied replacement parts and
recommended lubricants to protect total warranty
coverage.
 Maintain written records of equipment
maintenance, service and repair. These records
are helpful if warranty coverage is ever in
question.
 Written records shall include at least:
 Date of service, maintenance or repair.
 Description of the service, maintenance or
repair performed. Include part numbers if
applicable.
 Copies of purchase order(s) and invoice(s)
for repair parts and service.
 The name and signature of the person
performing the service, maintenance or
repair.

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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
specifically the results of:
 Improper installation, set-up, calibration
 Carelessness / Incorrect operating methods
 Inattention to re-lubrication and other
maintenance requirements
 Misuse / Unapproved applications
 Inadequate or absence of training
 Use of non-genuine Allied replacement parts
 Unapproved modifications
 Use of grease, which is not or is only
conditionally pumpable
 The use of a lubricant type that is unsuitable for
the application.
 Contaminated lubricants.
 Improper 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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4.0 Product Information
4.1 Description and Application - Typical
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 backfill compaction, base course preparation,
finish 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
Major components and subassemblies:
Top Frame – The Top Frame serves as the
connection point used to attach the Ho-Pac to the
stick / linkage of the carrier.
Suspension System – Rubber Springs mounted
between the Top Frame and Dynamic Assembly
isolate the vibratory energy from the carrier.
Dynamic Assembly – Consists of the lower
assembly, eccentric mass, bearings and rubber
springs. The strength of vibration is affected by the
motor's speed of rotation, weight of the eccentric
mass and the distance between eccentric mass and
shaft. The vibratory action and impulse force is
transferred through the attached compaction plate.
Control Valve – All Ho-Pac models come standard
with the multi-function control valve. Benefits 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:
 Flow regulator – Protects the bearings from
excessive loads by limiting oil flow that can over-
speed the hydraulic motor.
 Pressure control – Protects the hydraulic
components from over-pressure. This is factory
pre-set at the maximum operating pressure plus
200 psi (14 bar).
 Anti-cavitation circuit - Controls deceleration of
the hydraulic motor and eccentric mass. Also
protects motor from damage on circuits not set
up with an open return.
 Return line check valve - Prevents reverse flow
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 flow 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.
Efficient 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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5.0 Ho-Pac Selection and Application
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:
 Impulse Force
 Vibration Frequency
 Down 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
 Reach - Select a carrier size having sufficient
reach to compact the deepest area of the trench
or excavation. This will also help minimize the
frequency of repositioning the carrier.
 Lift Capacity - Know how your machine is
equipped and if any modifications 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 specifications.
 Hydraulic Circuit - Select a carrier equipped
with a one-way hydraulic circuit and unrestricted
free flowing return. It must maintain adequate
flow 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 inefficiencies
as longer running cycles result in loss of time,
increased energy consumption and component wear.
Optimum efficiency 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 fill material and
repositioning of the carrier may be required to
achieve a finished surface.
5.2 Auxiliary Hydraulic Circuit
CAUTION
Hydraulic circuits differ between
machines. Improper oil flow or pressure
can damage the Ho-Pac or carrier.
Only qualified 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 flow 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 flow 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 flow 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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6.0 Mounting Information
6.1 Top Mounting Frame Options
Options for mounting frames include the:
 'Flat-top' (Fig. 6-1)
 'XSF' top frame (Fig. 6-2).
6.1.1 Flat-top Frame
IMPORTANT
The Ho-Pac does not include a mounting bracket.
Order separately. Bracket design is carrier
specific. 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.
The design of the Flat Top Frame is illustrated in Fig.
6-1.
Fig. 6-1 Flat Top Frame and Mounting Bracket
NOTE: Mounting pin shown for reference. Allied
brackets are typically designed to utilize the carrier’s
bucket pins.
Use the provided bolts to fasten the mounting bracket
to the proper set of holes located in the top plate.
With the bucket removed from the carrier and the
mounting bracket bolted to the top frame, the Ho-Pac
is ready to be attached to the carrier. It is attached to
the carrier in the same manner as mounting a bucket.
Allied offers an array of mounting brackets (sold
separately) to fit virtually any carrier, including those
equipped with pin-grab or hook-type quick mounting
couplers.
Each flat top frame has a series of holes located in
the top plate. Dimensions of the bolt pattern are
located in Section 12 of this manual.
Hydraulic breakers and other work tools from Allied
share these same hole patterns. Information
regarding bolts used for fastening the bracket is
shown in Table 6.1.
Table 6.1 Flat Top Mounting Hardware (qty)
Family
Model
Bolt
FL Washer
Nut
IN1,2
400B
XR
400B,
700B
572711
(x4)
816359 (x8)
817491
(x4)
Follow proper tightening
procedures and torque. Table 9.2.
6.1.2 XSF Top Frame
The XSF top frame is available as an option and
designed for mounting to small size excavators. Use
the supplied mounting kit (Fig. 6-2) to adapt the top
frame to the carrier. (NOTE: The XSF frame has
limited fit-up with quick mounting couplers).
Fig. 6-2 XSF Top Frame and XSF Mounting Kit
1. Insert each supplied bushing (item 3) into pin
bores of XSF top frame.
2. Spacers (item 2) are supplied in various
thicknesses. Combine as needed to limit any
side-to-side movement.
3. Install pins (item 1) and secure with nut and
bolt.

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6.0 Mounting Information – [cont'd]
6.1.3 XSF Mounting Kits
IMPORTANT
Complete information about the carrier is required,
including the make, model, series and serial
number. Carriers equipped with a quick coupler
will require additional information. (NOTE: The
XSF frame has limited fit-up with carriers equipped
with quick mounting couplers).
Match he carrier’s pin diameter with the proper
mounting kit listed in Table 6.2. Eliminate any gap
using the supplied spacers having varying
thicknesses.
Table 6.2 XSF Mounting Kits
Bucket Pin 
Part No.
25 mm
A101735
30 mm
100207
35 mm
100283
38 mm
100364
40 mm
100204
45 mm
100324
50 mm
101808
1.00”
100208
1.25”
100209
1.50”
A100210

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7.0 Install / Uninstall Ho-Pac
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:
 PPE including Safety eyewear & gloves
 Sledge Hammer
 Drift pin / Alignment bar
 3/4 drive socket wrench
 3/4 drive metric sockets
 Grease gun
 Standard & Metric open end wrenches
 Rags
 Suitable 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
qualified 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 firm 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
qualified 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 flow and
pressure. Tools required for testing include a flow
meter and pressure gages. Test procedures, along
with a form to record the results of the flow 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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7.0 Install / Uninstall Ho-Pac
IMPORTANT
Collect fluids in a suitable container. Clean up spilled
fluids and obey all local regulations for the disposal
of these fluids.
IMPORTANT
The Ho-Pac will not operate if the supply and return
hoses are crossed. For ease of identification, the
supply hose is tagged with a red colored cable tie
and marked “PRESSURE”.
Fig. 7-1 Hydraulic Connections Identified
 Supply hose tagged with [Pressure Line]
 Supply hose connection to valve port [P1]
 Return hose connection to valve port [T2]
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.
1. Raise the Ho-Pac off the ground and operate the
bucket cylinder to ensure hoses will not be
pinched or restricted.
Fig. 7-2 Check hose length & routing for unrestricted
movement
2. Briefly test Ho-Pac for proper operation. Stop and
check for hydraulic leaks. Tighten hoses and
connections as necessary.
IMPORTANT
Read, understand and follow the instructions
included with the installation kit. The installation is
not complete until the hydraulic circuit is tested for
flow and pressure. Tools required for testing include
a flow meter and pressure gages. Test procedures,
along with a form to record the results of the flow
test, can be found in the Technical Data section of
this manual. Questions regarding testing
procedures should be directed to Allied Technical
Service.