Allied 300 User manual

TECHNICAL MANUAL
Part No. 573043 Rev. 2010 SEP
HO-PAC
HYDRAULIC
VIBRATORY
PLATE
COMPACTOR
MODEL
300
300B
500
500B
OPERATION, MAINTENANCE and PARTS
Do not operate or service this equipment unless you have carefully read
and understand all instructions and warnings contained in this manual.

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
i
Change Notice for Document 100926 (Model 500)
Date
Page
Description of Change
Nov 2002
Initial Issue
Apr 04, 2003
43
18 gpm correction
May 06, 2003
36
Identify hoses
Jul 21, 2004
Throughout
Added text & drawings
Aug 24, 2004
Re-issue new format
Sep 29, 2006
24
Revise oil capacity
April 9, 2007
8, 12, 34-43
New Figure and BOM
October 1, 2007
36-43
Add Old Compaction Plate P/N’s
Jul, 20, 2010
---
Add model 500 to 573043 manual. Terminate
document 100926.
Change Notice for Document 573043
Please note that material presented in this manual, including descriptions, illustrations and
specifications, is subject to change without prior notice. Go to www.alliedcp.com for product or
document updates.
Date
Page
Description of Change
Aug 06, 2007
---
Original Issue
Apr 04, 2008
Throughout
Add model 300B and 500B
Apr 17, 2008
36,37,38,39
Update parts list
May 2, 2008
37, 39
Change Motor Valve Hoses
Jun 19, 2009
Throughout
Revise Safety Information, Parts Tables
Jul 20, 2010
Throughout
Add model 500 to this manual, note discontinuation
of 714721 rubber spring –show replaced by 574574.
Revise figures of spring & hardware.
Aug 26, 2010
46, 48, 50*
Create new spring kit, 574885, for model 500.
*Correct item numbers 1a, 1b & 2 to reflect correct
figure.

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
ii
SAFETY INFORMATION
Be Alert to Safety Messages
Safety messages appear throughout this
manual and on labels affixed to the Allied
equipment. Read and understand the
information contained in the safety message
before attempting to install, operate, service
or transport the Allied equipment.
Keep all safety labels clean. Words and
illustrations must be readable. Before
operating this equipment, replace damaged
or missing labels.
Purpose of Safety Messages
The information provided in the safety
message is important for your safety. These
messages provide instructions on how to
avoid injury from potential hazards
associated with improper use, operation or
handling of the Allied equipment. Read and
follow the instructions of each safety
message and be aware the consequence if
these instructions are not followed.
Safety messages are arranged to provide
the following information:
Alert personnel to potential hazards
Describe the severity of the hazard, if
encountered
Identify the nature of the hazard
Instruct how to avoid the hazard
Safety Alert Symbol
ATTENTION, BECOME ALERT, YOUR
SAFETY IS INVOLVED.
The exclamation point within an equilateral
triangle is the safety alert symbol. The
symbol is used to draw attention to the
presence of potential hazards.
Signal Words
“DANGER”, “WARNING” and “CAUTION”
are signal words used to express the
different degrees of hazard seriousness.
Learn to recognize and understand the
severity and consequence associated with
each of these signal words should a
potentially hazardous condition be
encountered.
“DANGER” identifies the highest degree of
hazard seriousness. Its use is limited to the
most extreme situations.
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.
Additional Precautionary Messages and
Instructions
Additional precautionary messages and
instructions found in this manual are
preceded with –“IMPORTANT” and
“NOTE”.
IMPORTANT - indicates instructions that if
not followed, may cause damage to the
equipment.
NOTE –Indicates instructions that highlight
suggestions, which will result in enhanced
installation, reliability, or operation.

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
iii
SAFETY INFORMATION (cont’d)
Overview of Safety Messages Used in
This Manual
For the purposes of this manual,
pictographs displayed in safety messages
are defined as follows.
Read the manual
Refer to the manual for
this information
Details are explained in
the manual
See the Service Manual For
Additional Information
Moving part
Crush point
Pinch point
Moving part (in direction
indicated by arrow)
Falling object
Unsupported loads
Personal protection
equipment
Hearing protection
Safety eyewear
Gloves
Safety shoes
Falling part
Safety Alert Symbol
Stay clear
Maintain safe
distance
Flying projectiles
Fluid injection
Hot surface
Pressurized gas
Shut off carrier & remove
key before servicing
Identifies lift point
Shock
Explosion
Falls into open
excavations
Trench collapse

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
iv
SAFETY INFORMATION (cont’d)
Label Description and Location
This section reviews the safety and
identification labels affixed to the Allied
equipment. Part numbers for labels and
their location on the equipment are found on
the following page.
Keep all safety labels clean. Words and
illustrations must be readable. Before
operating this equipment, replace damaged
or missing labels.
Location
Label
Description
1
ID PLATE (Identification Plate) - contains
identifying information about the equipment
including: Manufacturer’s Name and
Address, Product Name, CE compliance
marking, Model Number, Serial Number, Year
of Manufacture, and Mass
2
LIFT POINT- Decal identifies approved lift
points of the Ho-Pac.
3
STAY CLEAR - Decal alerts personnel and
by-standers to maintain a safe distance from
the Ho-Pac during operation.
4
READ INSTRUCTION - Decal indicates that it
is important to read the manual for detailed
explanations and instructions
5
HOT SURFACE - Decal indicates hydraulic
components that become hot during
operation. These include the quick disconnect
couplings, hoses, hose fittings, valve and
motor. Avoid contact with hot parts.
6
ALLIED LOGO –This decal is the Allied
brand identifier and is a registered trademark
of Allied Construction Products, LLC.
7
 
OIL FILL - Decal identifies the location to add
oil to fill the oil reservoir.
8
 
OIL LEVEL - Decal identifies the location to
check the oil level.
9
300, 300B, 500 or 500B
MODEL NUMBER - Decal indicates the Ho-
Pac model number.
10
PRESSURE I.D. –A red colored cable tie
marked “PRESSURE IN” is attached to the
pressure hose for ease of identification
between hoses.

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
v
SAFETY INFORMATION (cont’d)
Figure on left is the label locations for 300,
300B & 500B
(IN1 & IN2 / XR Flat Top Mounting Frame
Shown. Same for XSF Mounting Frame)
Figure on right is the label locations for 500
(BSF Mounting Frame Shown. Same for XSF,
XR, XCS / BCS Mounting Frames)
Label Information
Item
Part No.
Description
Qty
Notes
---
573049
Decal Set for 300
1(Set)
Set Includes 1-10
---
573222
Decal Set for 300B
1(Set)
Set Includes 1-7
---
100940
Decal Set for 500
1(Set)
Set Includes 1-10
---
573219
Decal Set for 500B
1(Set)
Set Includes 1-7
1
573051
Model 300
2
Located on both sides
573216
Model 300B
Located on both sides
102730
Model 500B
Located on both sides
573217
Model 500B
Located on both sides
2
676982
Lift Point
4
Located on both sides
3
676981
Stay Clear
2
Located on both sides
4
676984
Read Instructions
2
Located on both sides
5
676983
Hot Surface
1
Located near valve
6
676651
Allied Logo
2
Located on both sides
7
818676
Pressure I.D. Tag
1
Located on Pressure Hose
8
102728
Oil Fill
1
Used on Model 300
9
A102729
Oil Level
1
Used on Model 300
10
676980
ID Plate
1
Not included in set –order separately

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
vi
SAFETY INFORMATION (cont’d)
Before Operating Any Equipment
Qualified Person
For the purposes of this manual and product
labels, a qualified person is one who:
Has read, understands and adheres to
the safety messages in this manual.
Is competent in recognizing potential
hazards and possess the knowledge
and skills necessary to make prompt
decisions resulting in appropriate
actions to safeguard against personal
injury and property damage.
Has received adequate training in safe
and proper installation, maintenance
and operation for this Allied equipment.
Is authorized to operate, service and
transport the Allied equipment.
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.
Owner’s Responsibilities
The equipment owner is responsible to
ensure that only qualified personnel operate
and service the Allied attachment.
Qualified personnel must adhere to the
procedures explained in this manual,
especially regarding personnel safety.
If necessary, the owner or safety/training
personnel must expand upon these general
instructions and adapt them to particular
applications.
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, establishing pedestrian barriers and
using personnel protection equipment, etc.
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
www.osha.gov
Read the Manual
This manual contains important
information for the safe and proper use of
the Allied attachment. Read, understand
and follow all safety instructions
described in this manual before installing,
operating or servicing the Allied
equipment.
Read and understand all safety
precautions and operating instructions
found in the manuals provided by the
carrier manufacturer. Do not operate the
carrier, or perform any inspection,
maintenance or service to its systems
unless you are qualified.

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
vii
SAFETY INFORMATION (cont’d)
Ask for Construction Industry OSHA
Standards Stock #869-034-00107-6.
Operational Safety Program
The safe and effective use of the Allied
attachment depends upon proper
installation, operation, maintenance and
repair. Operational safety must encompass
all of these factors.
Accident prevention through operational
safety programs are most effective when
the equipment owner further develops the
program by taking into account his own
experience in using and maintaining
equipment.
Developing such programs will result in
improved equipment life, performance and
reduced downtime. Most importantly, it will
minimize the risk of personal injuries and
equipment damage.

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
viii
TABLE OF CONTENTS
SECTION
Pg.
DOCUMENT CHANGE NOTICE….
i
SAFETY INFORMATION..…………
ii
Be Alert to Safety Messages……….…
ii
Purpose of Safety Messages……….…
ii
Safety Alert Symbol ..…………..………
ii
Signal Words –“DANGER”,
“WARNING” and “CAUTION”…………
ii
Additional Precautionary Messages….
ii
Overview of Pictographs……………
iii
Label Description & Location…………..
iv
Before Operating Any Equipment…......
vi
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
TABLE of CONTENTS……..……..
viii
LIST of FIGURES…………..…...…
ix
1.0 INTRODUCTION..……..………
1
1.1 About This Manual………….………
1
1.2 Additional Documentation………....
1
2.0 PRODUCT IDENTIFICATION
2
2.1 Serial Number Location.………..….
2
2.2 Identification Plate….……….……...
2
2.3 Record the Serial Number……..…..
2
3.0 WARRANTY PROTECTION
SUMMARY…………..….….…..
3
3.1 Overview…………….……..
3
3.2 Owner’s Responsibilities……..…...
3
SECTION
Pg.
3.3 Allied Product Policies……………...
4
4.0 OVERVIEW…..………..……….
5
4.1 Product Description and
Application……………………..……
5
4.2 Major Subassemblies………..…….
5
4.3 Principle of Operation………………
6
4.4 Definition of Hydraulic Installation
Terms…………………………….…
6
5.0 Technical Information….
8
5.1 Specifications……….……………..
8
5.2 Dimension Diagrams……….……..
10
6.0 Mounting Information………..
17
6.1 Types of Mounting Frames…….….
17
6.1.1 Flat Top Mounting Frame…….....
17
6.1.2 Excavator Side Frame (XSF)…..
18
6.1.3 Mounting Kits for Excavator Side
Frame (XSF)…………………………….
18
7.0 Installation & Removal………
19
7.1 Carrier Compatibility……….….……
19
7.2 Testing and Adjusting……….……..
19
7.3 Installation on to Carrier…….……..
19
7.4 Removal from Carrier……..…..……
21
8.0 Operation..…………..…………
22
8.1 Pre-operation Checks…………..…
22
8.2 Operation…………………………...
22
9.0 Troubleshooting……..…….….
24
9.1 Testing the Hydraulic Circuit……….
25
10.0 Service and Maintenance….
26
10.1 General Guidelines………….……
26
10.2 Daily Maintenance…………...……
26
10.3 Preventative Maintenance……..…
27

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
ix
TABLE OF CONTENTS (cont’d)
SECTION
Pg.
10.4 Threaded Fasteners………....……
27
10.5 Conditional Maintenance…………
27
10.6 Pressure Relief Plug………………
27
10.7 Lubrication (300B & 500B)..…..…
27
10.7.1 Lubrication (300 Only)..…………
27
10.7.2 How to Check & Add Oil…….….
28
10.7.3 How to Drain Oil…………………
28
10.8 How to Check Bearings…..…...….
28
10.8.1 Bearing Replacement.………….
29
10.8.2 Bearing Removal………….…...
29
10.8.3 Bearing Installation…………..…
29
10.9 Spring Mount Replacement……...
29
10.10 Hydraulic Motor…….…………….
30
10.10.1 Hydraulic Motor Service……....
30
10.10.2 Motor Flow & Rotation………...
30
10.11 Flow Regulator Valve……….…..
30
10.11.1 Flow Regulator Valve Service
30
10.11.2 Valve Port Identification……...
31
10.12 Tightening Torque…………..…..
31
11.0 Lifting, Transport & Storage
32
11.1 Lifting & Transport…………..……
32
11.1.1 Transported Independently of
Carrier…………………….….…
32
11.1.2 Transported Attached to Carrier
32
11.2 Storage…….……….…….………..
32
12.0 Parts Information……….……
33
12.1 General…………………..…………
33
12.2 Spare Parts for Motor and Valve...
32
12.3.1 Motor Identification.…………..…
32
12.3.2 Valve Identification………….….
33
Table 12.1 Motor & Valve Package……
34
Table 12.2 300,B Mounting &
Hydraulics………………………………..
36
Table 12.3 Dynamic Assembly –300…
38
SECTION
Pg.
Table 12.4 Dynamic Assembly 300B….
40
Table 12.5 Mounting Frame &
Hydraulics –500………………………...
42
Table 12.6 Dynamic Assembly –500....
46
Table 12.7 Dynamic Assembly –500....
48
Table 12.8 Mounting Frame &
Hydraulics –500B……………………….
50
Table 12.9 Dynamic Assembly –500B
52
List of Figures
Pg.
Pictographs……………………………………
iii
Labels……………..…………………………..
iv
Label Locations………………………………
v
2-1 Identification Plate…………….…………
2
2-2 Location of ID Plate………….….……….
2
4-1 Major Subassemblies……….….……….
5
4-1 Flow-Pressure Diagram…….….……….
7
5-1 300, 300B with “XSF” Top Frame……..
10
5-2 300, 300B with Flat Top Frame………..
11
5-3 500 with “XR” Top Frame……………….
12
5-4 500 with “XCS” / “BCS” Top Frame……
13
5-5 500 with “BSF” Top Frame……………..
14
5-6 500 with “XSF” Top Frame….………..
14
5-7 500B with “XSF” Top Frame….………..
15
5-8 500B with “IN” 1 & 2 / XR Top Frame…
16
6-1 Flat Top Mounting Frame………………
17
6-2 Top Mounting Bracket………..…………
17
6-3 “XSF” Top Mounting Frame…………….
18
6-4 “XSF” Mounting Kit………….…………..
18
7-1 Configured with “XSF” Mounting Frame
21
7-2 Hose Connections……….….…..………
21
10-1 Labels for Oil Level & Oil Fill.…...…....
27
10-2 Location of Oil Level & Fill Labels…….
27
10-3 Proper Oil Level…..…….….…………..
28
10-4 Proper Motor Rotation..………………..
30
10-5 Control Valve Connections…………....
31
10-6 Special Tightening Instructions……….
31
12-1 Motor Identification………..……………
34
12-2 Control Valve Identification..………..…
34
12-3 Mounting Frame & Hydraulics –300,
300B.…………..
35
12-4 Dynamic Assembly –300…….….....…
37
12-5 Dynamic Assembly –300B………....…
39
12-6 Mounting Frame & Hydraulics –500
41
12-7 Dynamic Assembly –500…..…..……..
45
12-8 Dynamic Assembly –500…..……..…..
44
12-9 Mounting Frame & Hydraulics –500B
46
12-10 Dynamic Assembly –500B...….……
51

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
1
SECTION 1.0
INTRODUCTION
1.1 About this Manual
The Technical Manual outlines important
information for the safe and proper use of
the Allied attachment. Information includes:
Safety Messages
Technical specifications
Inspection & Maintenance
Troubleshooting
Lifting, transporting & storage
Mounting Information
Spare parts information
This manual is an integral part of this
product. Keep it in a convenient location so
that it is easily accessible for future
reference.
Table 1.1
Technical Manual No. 573043
This Technical Manual is applicable to
the following Allied product(s):
Product
Name:
Ho-Pac®
Model(s):
300, 300B,
500 & 500B
Serial
Numbers:
300: 00001 - 01030
300B: 01031 & above
500: 6000 -
500B: 00001 & above
Years of
Manufacture:
2007-
2007 & above
2002-
2008 & above
Material presented in this manual, including
illustrations and descriptions, is intended
solely for use with the equipment identified
in this table and may not be suitable for
other models. Prior to use, confirm that the
information recorded on the Equipment
Identification Plate corresponds with the
above. For the location of the ID Plate, refer
to Section 2.0.
Material presented in this manual, including
descriptions, illustrations and specifications,
is subject to change without prior notice.
Amendments to this manual are described
at the beginning of this manual under
“Change Notice”.
1.2 Additional Documentation
Further information about the Allied Ho-Pac
and optional accessories can be found in
the following manuals:
Table 1.2
Additional Documentation
Manual
Model
Part No.
Technical
Manual
300, 300B,
500, 500B
573043
The Technical Manual provides safety
precautions, specifications, service,
maintenance, warranty information, product
policies, troubleshooting, installation /
removal, storage, lifting and transporting
information. A section for replacement parts
is also included.
Ho-Pac
Swivels
All Models
103467
This manual provides information about the
Allied Ho-Pac Swivel. The optional swivel
allows the Ho-Pac to turn at either a 45° or a
90° angle to the boom.
Compaction
Handbook
All Models
103392
The Compaction Handbook contains
background information about soil, soil
compaction and basic soil compaction
equipment. It also contains general
information about the operation of Allied’s
boom-mounted vibratory
compactors/drivers, as well as performance
data for Ho-Pac models derived from field
tests.

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
2
SECTION 2.0
EQUIPMENT IDENTIFICATION PLATE
2.1 Serial Number Location
Refer to Figure 2-2. The Serial Number
assigned to this equipment can be found in
the following locations:
1. Stamped in to the metal ID Plate located
on the top mounting frame
2. Stamped on eccentric housing.
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
Address
Product name
Model number
Serial number
Year of manufacture
Mass
Fig. 2-1
Identification Plate
Verify that the information contained on
the Tag corresponds with the
information provided in Section 1 of this
manual.
Fig. 2-2
1) Equipment Identification Tag, 2) Serial
Number Stamped on Dynamic Assembly
2.3 Record Equipment I.D.
Information for Future Reference
Copy the Model and Serial Number from
the Equipment Identification Tag to the
space provided below.
Indicate the date in which the Allied
equipment was placed into service.
Model:
Serial Number:
In service date:
Your local Allied dealer requires this
information to better assist you with
questions regarding parts, warranty,
operation, maintenance, or repair.
Register this equipment by returning the
completed warranty registration form to
Allied.

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
3
SECTION 3.0
WARRANTY PROTECTION SUMMARY
3.1 Overview
The Allied attachment is delivered
assembled, lubricated, and factory tested.
Upon receipt of the equipment, inspect for
possible shipping damage.
For every new Ho-Pac, Allied requires that a
Warranty Registration form be completed
and returned to Allied. The form has a
section to record information about the
carrier on which the attachment is being
installed.
To keep the Allied equipment operating
within its performance limits, familiarize
yourself with the technical specifications
section of this manual. Follow the
specifications when calibrating the carrier.
Improper installation, including failure to
calibrate the carrier correctly may result in
loss of performance or subject the
equipment to conditions beyond their
design. Use of non-Allied parts, unapproved
service methods, modifications to the
attachment, or installation, operation and
maintenance, not in accordance with the
instructions outlined in this manual may
cause equipment failure or personal injury.
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
attachment will remain productive with a
minimum of service. The following outlines
general maintenance policies required for all
Ho-Pac models. The equipment owner is
strongly encouraged to further develop
these general guidelines and adapt 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. Immediately
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.
Adhere to the specifications listed in this
manual and operate the Allied
equipment within its performance limits.
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 problems and know how to
take corrective action as detailed in the
Troubleshooting Section of this manual.
Conduct regular checks and inspections
as scheduled in the Care and
Maintenance Section of this manual.
Allow only qualified operators and Allied
trained service technicians to perform

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
4
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 Ho-Pac
maintenance, service and repair. These
records are helpful if warranty coverage
is ever in question.
Each record shall include at least:
Date of the service, maintenance or
repair.
Description of the service, maintenance
or repair performed. Include part
numbers if applicable.
Copies of purchase order and invoices
for repair parts and service.
The name and signature of the person
performing the service, maintenance or
repair.
3.3 Allied Product Policies
In this manual, Allied recommends Ho-Pac
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 Training
Improper Installation (Failure to
properly calibrate the host machine)
Operation in unapproved
applications
Incorrect operation
Improper maintenance
Use of non-genuine Allied
replacement parts
Unapproved modifications
These exclusions apply to damage to the
Allied equipment, associated equipment and
injury to personnel.

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
5
SECTION 4.0
OVERVIEW
4.1 Product Description and
Application
The Allied Ho-Pac is a boom-mounted,
hydraulic powered, vibrating plate
compactor and driver. It is used for soil
compaction and sheet/pile installation. The
Ho-Pac is designed for mounting on mobile
equipment with hydraulic booms, such as
rubber tired or track-type construction
vehicles and is attached to the carrier in the
same manner as mounting a bucket. The
Ho-Pac utilizes the hydraulic power system
of the host machine to supply power to the
dynamic assembly and generate vibrations.
Applications include backfill compaction,
base course preparation, finish surface
treatment and embankment buildup. It is
also used for sheet/pile installation.
4.2 Major Subassemblies
Fig. 4-1
Major Subassemblies
1-Dynamic Assembly, 2-Suspension System, 3-
Mounting Frame, 4-Control Valve
The Allied Ho-Pac consists of the following
major subassemblies:
Dynamic Assembly - Generates and
transfers the vibratory energy to the soil.
The assembly includes the hydraulic motor,
eccentric mass, bearings, housing and
compaction plate.
Suspension System –Rubber Spring
Mounts suspend and isolate the Mounting
Frame from the Dynamic Assembly.
Mounting Frame –Connected to the
Suspension System, the Mounting Frame
provides hook up points for attaching the
Ho-Pac to the stick / linkage of the carrier.
Control Valve –A standard feature on all
models is the hydraulic control valve. This
multi-function valve is designed to optimize
operation and provide reliability of critical
components, such as the hydraulic motor
and bearings. NOTE: The valve is factory
pre-set and requires no further adjustments.
The valve offers the following protection:
Flow regulator - Prevents over-speeding
the hydraulic motor by limiting the flow.
Pressure control - Prevents over-
pressuring the motor and other hydraulic
components. 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.

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
6
4.3 Principle of Operation
The Allied Ho-Pac is a high-energy
compaction tool utilizing three compaction
techniques:
The Impulse Force generated by the
rotating eccentric mass vibrates the soil
near the base plate to eliminate voids
between material particles.
The Vibration Frequency of 2000
r.p.m. provides maximum effectiveness
for the consolidation and compaction of
granular soil materials.
The Down Force of the carrier provides
a preload force to effectively transfer the
vibrating energy and to compress the
material.
Optimum compaction is usually obtained
with two passes. The duration of the initial
pass is dependent on depth and material.
The second pass may require additional fill
material and Ho-Pac repositioning to
achieve a finished surface.
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. Refer to the
Compaction Manual for further details.
4.4 Definition of Hydraulic Installation
Terms
Hydraulic Flow –A measure of the volume
of oil (values given in GPM / LPM)
necessary for the safe and efficient
operation of the Allied attachment. When
used in this application, the hydraulic motor
performs in a narrow flow range. For
attachments, such as the Ho-Pac, the ideal
speed of the motor is 2000 RPM. Not
enough flow will result in poor performance.
Too much flow can cause equipment
damage.
IMPORTANT
Never use a relief valve, as a means to
reduce the hydraulic oil flow to the Ho-Pac.
Oil by-passed over the relief valve will
cause significant heat generation and
result in damage to the equipment.
Operating Pressure –A measure of the
hydraulic oil pressure (values given in PSI /
BAR) taken in the attachment’s supply line
during operation. For attachments such as
the Ho-Pac, the pressure value is
represented as a maximum value and a no
load value. While the Ho-Pac is operating,
the operating pressure will rise and fall as
conditions such as down pressure and soil
resistance change.
IMPORTANT
The Operating Pressure is not to be used
as a relief valve pressure setting. Poor
performance and significant heat
generation will occur.
Relief Valve –An adjustable, spring-loaded
valve that opens when a preset pressure
value is reached. A relief valve is safety
device, used to protect the circuit against
hydraulic overload. Relief valves vary in
design. Pilot controlled pressure relief
valves are designed so that the relief
pressure increases very little as the flow
through the valve increases. For Ho-Pac
applications, they are recommended over
direct acting type relief valves.
IMPORTANT
The relief valve is a safety device, used to
protect the circuit against hydraulic
overload. It is a required component.
Dynamic Relief Pressure –Also referred
to as “Cracking Pressure”. The pressure
measured at the moment the oil pressure
exceeds the preset value of the relief valve
and the spool “cracks” open.

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
7
Static Relief Pressure –Also referred to as
“Full Relief Pressure”. The pressure
measured at the moment the relief valve
has opened fully and all oil is by-passed.
Opening Curve –The dynamic pressure is
always less than the static pressure. A relief
valve adjusted to a dynamic pressure of
3000 psi (200 Bar) will crack open when the
preset point is reached, but fully opens at a
higher pressure. The opening curve is the
rise of pressure between dynamic and
static.
IMPORTANT
The carrier's hydraulic system shall be
capable of providing the desired oil flow at
a pressure equal to at least the dynamic
relief pressure.
FLOW
PRESSURE
Hydraulic
Flow Range
Operating
Pressure
Range
Static Relief Pressure
(No flow to attachment)
Dynamic Relief Pressure
(Relief valve cracks open)
Attachment
Operational
Range
Operating Pressure
Opening
Curve
Fig. 4-1
Flow-Pressure Diagram

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
8
SECTION 5.0
TECHNICAL INFORMATION
5.1 SPECIFICATIONS
Table 5.1
General Specifications
Model
300, 300B
500B
Impulse Force
3,000 [13,340]
5,000 [22,240]
Lbs [N]
Cycles Per Minute
2000
1/min
Sound Power Level
105 [Est’d]
105 [Est’d]
DBA [LWA]
Hydraulic Flow (a)
Motor
Option
1
6 [23]
gpm
[lpm]
2
9 [34]
3
14 [53]
4
18 [68]
Max Operating
Pressure
Motor
Option
1
2800 [193]
psi
[bar]
2
2800 [193]
3
2500 [172]
4
2000 [138]
Oil Pressure @ No Load
300-500 [20-35]
Auxiliary Circuit
Relief Pressure
Dynamic (b)
Max Operating + 400 [28]
Static
Max Operating + 650 [45]
Compaction Plate Dimensions
12 x 22
[305 x 559]
13 x 27
[330 x 685]
Inch
[cm]
Compaction Area
1.8 [0.17]
2.4 [0.23]
Ft2
[m2]
Hose Size
Pressure
5/8 [16]
Inch
[mm]
Return (c)
5/8 [16]
Weight (d)
Flat-Top
400 [181]
485 [220]
Lbs
[kg]
XSF
310 [141]
410 [186]
Carrier Weight (e)
Excavator
3-12 [1.4-5.5]
Lbs (1,000)
[kg] (1,000)
(a) For optimal Ho-Pac operation, the carrier’s auxiliary hydraulic circuit must be capable of providing the
specified oil flow at a pressure equal to at least the dynamic relief pressure. Proper selection of the Motor &
Valve Package is critical to ensure efficient machine operation.
(b) Verify the carrier’s main relief is set to the manufacturer’s specifications and that this value is equal or greater
than the dynamic relief setting.
(c) Return line pressure (measured at the Ho-Pac) in excess of 150 psi [10 bar] will decrease service life of
motor.
(d) Working weight with typical mounting kit/bracket.
(e) Mount only to carriers having adequate load-carrying capabilities.

Allied Construction Products, LLC Technical Manual Ho-Pac 300, 300B & 500, 500B
9
SECTION 5.0
TECHNICAL INFORMATION
5.1 SPECIFICATIONS
Table 5.2
General Specifications
Model
500
Impulse Force
3,940 [17,530]
Lbs [N]
Cycles Per Minute
2000
1/min
Sound Power Level
105 [Est’d]
DBA [LWA]
Hydraulic Flow (a)
Motor
Option
1
9 [34]
gpm
[lpm]
2
14 [53]
3
18 [68]
Max Operating
Pressure
Motor
Option
1
2800 [193]
psi
[bar]
2
2500 [172]
3
2000 [138]
Oil Pressure @ No Load
300-500 [20-35]
Auxiliary Circuit
Relief Pressure
Dynamic (b)
Max Operating + 400 [28]
Static
Max Operating + 650 [45]
Compaction Plate Dimensions (Std)
12 x 27 [305 x 686]
Inch [cm]
Compaction Area (Std)
2.3 [0.21]
Ft2 [m2]
Compaction Plate Dimensions (Opt)
18 x 22 [457 x 559]
Inch [cm]
Compaction Area (Opt)
2.8 [0.26]
Ft2 [m2]
Hose Size
Pressure
5/8 [16]
Inch
[mm]
Return (c)
5/8 [16]
Weight (d)
XSF
513 [233]
BSF
513 [233]
Lbs
[kg]
Flat-Top
XR
498 [226]
XCS / BCS
491 [223]
Carrier Weight (e)
Excavator
3-12 [1.4-5.5]
Lbs (1,000)
[kg] (1,000)
(a) For optimal Ho-Pac operation, the carrier’s auxiliary hydraulic circuit must be capable of providing the
specified oil flow at a pressure equal to at least the dynamic relief pressure. Proper selection of the Motor &
Valve Package is critical to ensure efficient machine operation.
(b) Verify the carrier’s main relief is set to the manufacturer’s specifications and that this value is equal or greater
than the dynamic relief setting.
(c) Return line pressure (measured at the Ho-Pac) in excess of 150 psi [10 bar] will decrease service life of
motor.
(d) Working weight with typical mounting kit/bracket.
(e) Mount only to carriers having adequate load-carrying capabilities.