Leach ALPHA III User manual

ALPHATM III
Maintenance Manual
www.labriegroup.com

Part # 177725 (rev.04.04.2023)

ALPHA-III™
MAINTENANCE MANUAL
Part # 177725 (rev.04.04.2023)

Liability
Labrie Group assumes no liability for any incidental, consequential, or other liability that might result
from the use of the information contained in this document.
All risks and damages, incidental or otherwise, arising from the use or misuse of the information
contained herein are entirely the responsibility of the user.
Although careful precaution has been taken in the preparation of this document, Labrie Group
assumes no responsibility for errors or omissions.
About the Illustrations in This Manual
The illustrations in this manual are provided as examples only. Actual installation or vehicle equipment
may be different than pictured.
April 2023
Part # 177725 (rev.04.04.2023)

Part # 177725 (rev.04.04.2023)

Part # 177725 (rev.04.04.2023)

Office Addresses and Phone
Numbers
In the U.S.
Address: 1198 Shattuck Industrial Blvd.
LaFayette, GA 30728
Toll Free: 1-800-231-2771
Telephone: [phone]
General Fax: [phone]
Oshkosh General Fax: [phone]
Parts and warranty: During business hours, 8:00 AM to 6:00 PM Eastern Standard Time
Technical Support Service: Available 24 hours
In Canada
Address: 455 1st Avenue
Levis, QC G6W 5M6
Toll Free: 1-877-452-2743
Customer Service Phone: [phone]
Service Fax: [phone]
Parts Fax: [phone]
Parts and warranty: During business hours, 8:00 AM to 5:00 PM Eastern Standard Time
Technical Support Service: Available 24 hours
Website: www.labriegroup.com
E-mail: [e-mail]
IMPORTANT:For technical support and parts ordering, the serial number of your vehicle is required. Therefore,
Labrie Group recommends to keep record of the information found on the VIN plate, which is
located in the cab.
Part # 177725 (rev.04.04.2023)

Part # 177725 (rev.04.04.2023)

Liability ........................................................................................ ii
Office Addresses and Phone Numbers ....................................... v
In the U.S. ............................................................................................................................................................................................. v
In Canada ............................................................................................................................................................................................. v
Table of Contents ....................................................................... vii
Introduction ................................................................................ 1
About This Manual ........................................................................................................................................................................... 1
Topics Not Included in This Manual .................................................................................................................................... 1
About the Illustrations in this Manual ................................................................................................................................ 1
Schematics ................................................................................................................................................................................... 1
Warranty Registration Form .......................................................................................................................................................... 2
Introducing the ALPHA-III™ ............................................................................................................................................................. 2
Terms You Need to Know ....................................................................................................................................................... 2
Waste Handling Process ................................................................................................................................................................. 4
Loading ......................................................................................................................................................................................... 4
Packing .......................................................................................................................................................................................... 4
Unloading ..................................................................................................................................................................................... 5
Container Handling Systems ........................................................................................................................................................ 6
Terms You Need to Know ....................................................................................................................................................... 7
Container Handling Process ......................................................................................................................................................... 9
Attaching ...................................................................................................................................................................................... 9
Dumping ....................................................................................................................................................................................... 9
Releasing ................................................................................................................................................................................... 10
Service and Maintenance on the ALPHA-III™ ........................................................................................................................ 10
Parts ............................................................................................................................................................................................. 10
Warning ...................................................................................................................................................................................... 10
ALPHA-III™ Basic Maintenance ............................................................................................................................................. 11
Safety ......................................................................................... 13
Safety Decals ................................................................................................................................................................................... 13
Conventions .................................................................................................................................................................................... 14
Basic Safety Notions ..................................................................................................................................................................... 15
Responsibilities ............................................................................................................................................................................... 15
Employer Responsibilities ................................................................................................................................................... 15
Employee Responsibilities .................................................................................................................................................. 16
Things to Do .................................................................................................................................................................................... 16
Things to Avoid .............................................................................................................................................................................. 16
Safety Precautions ......................................................................................................................................................................... 17
Prior to Start-Up ...................................................................................................................................................................... 17
General Operation .................................................................................................................................................................. 18
Hydraulics .................................................................................................................................................................................. 20
Fire Protection ......................................................................................................................................................................... 21
Housekeeping .......................................................................................................................................................................... 22
Safety Features ............................................................................................................................................................................... 22
Back Up Alarm ......................................................................................................................................................................... 22
Tailgate Safety Props ............................................................................................................................................................. 22
Camera System ........................................................................................................................................................................ 28
Tailgate Open Proximity Switch Test .............................................................................................................................. 29
Table of Contents
Part # 177725 (rev.04.04.2023)

viii Table of Contents
Locking Out and Tagging Out the Vehicle ............................................................................................................................ 31
Shutting Down the Vehicle ......................................................................................................................................................... 32
Starting Up the Vehicle ................................................................................................................................................................ 33
General Repair Practices ........................................................... 35
Preparation for Service ................................................................................................................................................................. 35
Replacement Parts ......................................................................................................................................................................... 36
Technical Service Bulletins .......................................................................................................................................................... 36
Safety Precautions ......................................................................................................................................................................... 36
Prior to Performing any Service or Repair ...................................................................................................................... 36
During Service or Repair ....................................................................................................................................................... 36
Welding Precautions ..................................................................................................................................................................... 37
Electric Welders ....................................................................................................................................................................... 37
Oxy-Acetylene Torches ......................................................................................................................................................... 37
Removal, Disassembly and Repair ........................................................................................................................................... 38
Reassembly and Installation ...................................................................................................................................................... 38
Electrical Testing ............................................................................................................................................................................. 39
Checking for Voltage ............................................................................................................................................................. 39
Checking Continuity .............................................................................................................................................................. 39
Diode Testing ........................................................................................................................................................................... 39
Welding ............................................................................................................................................................................................. 40
Capacity of Lifting Device Required for Removal ............................................................................................................... 40
Hydraulic Fitting Torque Values ................................................................................................................................................ 41
Specifications ............................................................................ 43
Lubricants ......................................................................................................................................................................................... 43
Hydraulic System ............................................................................................................................................................................ 43
Capacity (approximately) ..................................................................................................................................................... 43
Total System ............................................................................................................................................................................. 43
Pump ........................................................................................................................................................................................... 44
LEACH™ Hydraulic Fluid Recommendation ..................................................................................................................... 44
Hydraulic Fluid ......................................................................................................................................................................... 45
Body Dimensions ........................................................................................................................................................................... 45
Chassis System Password ............................................................................................................................................................ 46
Preventive Maintenance ........................................................... 47
Operating and Maintenance Records ..................................................................................................................................... 47
Lubrication Chart ........................................................................................................................................................................... 48
Carrier Panel Wear Points ..................................................................................................................................................... 48
Recommended Lubricants .................................................................................................................................................. 51
Hydraulic System Service ............................................................................................................................................................ 52
Checking Fluid Level (Daily) ................................................................................................................................................ 52
Checking Tank Breather Cap (Weekly) ............................................................................................................................ 52
Check/Replace Return Line Filter Element .................................................................................................................... 54
Replacement of Filter Element ........................................................................................................................................... 54
Flushing Hydraulic System / Cleaning Hydraulic Strainer (Yearly) ........................................................................ 55
Hydraulic Cooler Maintenance .......................................................................................................................................... 55
Contamination ................................................................................................................................................................................ 55
Daily Preventive Maintenance ................................................................................................................................................... 56
Inspection .................................................................................................................................................................................. 56
Cleaning ..................................................................................................................................................................................... 56
Lubrication ................................................................................................................................................................................ 56
Container Handling Equipment (optional) .................................................................................................................... 57
Weekly Preventive Maintenance .............................................................................................................................................. 57
Part # 177725 (rev.04.04.2023)

Table of Contents ix
Cleaning ..................................................................................................................................................................................... 57
Inspection .................................................................................................................................................................................. 57
Lubrication ................................................................................................................................................................................ 58
Hydraulic System .................................................................................................................................................................... 58
Container Handling System Hardware (optional) ...................................................................................................... 58
Pivot Points ............................................................................................................................................................................... 58
Carrier Cylinder Pivot Maintenance ................................................................................................................................. 58
Wire Rope (Cable) ................................................................................................................................................................... 59
Maintenance Recommendations ..................................................................................................................................... 59
Monthly Preventive Maintenance ........................................................................................................................................... 60
Lifting Hook (optional) ......................................................................................................................................................... 60
PTO Device ................................................................................................................................................................................ 60
Yearly Preventive Maintenance ................................................................................................................................................ 60
Hydraulic System .................................................................................................................................................................... 60
Check-Out .................................................................................. 63
Checking Hydraulic Tank Fluid Level ...................................................................................................................................... 64
Checking Engine Speed Up Switches (Body) ...................................................................................................................... 64
Checking Pack Cycle Time .......................................................................................................................................................... 66
Checking Pressures ....................................................................................................................................................................... 67
Checking Main Line Pressure ............................................................................................................................................. 67
Checking Packer and Carrier Panel Shift (Knockout) Pressures ............................................................................. 69
Checking Resistance Cartridge Pressure ........................................................................................................................ 70
Checking Packer High Pressure (Circuit) Relief Cartridge ........................................................................................ 72
Checking Accessory (Circuit) Relief Cartridge .............................................................................................................. 73
Checking Pushout Panel Shoes ................................................................................................................................................ 73
Power Take Off (P.T.O.) .................................................................................................................................................................. 74
Troubleshooting ........................................................................ 75
Compaction ..................................................................................................................................................................................... 75
Dieseling in Hydraulic Systems ................................................................................................................................................. 76
Troubleshooting Tables ............................................................................................................................................................... 77
Hydraulic System Flow Diagrams ............................................................................................................................................ 85
System Component Nomenclature ................................................................................................................................. 85
Transmission in Neutral (with Packer and Carrier Panels in the “Home” Position) ......................................... 86
Packer Panel Sweeps Back Over Load ............................................................................................................................. 87
Carrier & Packer Panels Move Down to “Interrupted Cycle” Position .................................................................. 88
Packer Panel Sweeps Hopper ............................................................................................................................................. 89
Packing Refuse (1) .................................................................................................................................................................. 90
Packing Refuse (2) .................................................................................................................................................................. 91
Raising Tailgate ....................................................................................................................................................................... 92
Ejecting Load ............................................................................................................................................................................ 93
Retracting Pushout Panel .................................................................................................................................................... 94
Lowering Tailgate ................................................................................................................................................................... 95
Service & Repair ........................................................................ 97
Carrier and Packer Cylinders) .................................................................................................................................................... 97
Test for Leaking Packer Cylinders ..................................................................................................................................... 98
Test for Leaking Carrier Cylinders ................................................................................................................................... 101
Removal of Packer Cylinders ............................................................................................................................................ 105
Removal of Carrier Cylinders ............................................................................................................................................ 108
Tailgate Lift Cylinders ................................................................................................................................................................. 109
Test for Leaking Tailgate Cylinders ................................................................................................................................ 110
Removal of Tailgate Lift Cylinders .................................................................................................................................. 111
Part # 177725 (rev.04.04.2023)

xTable of Contents
Tailgate Assembly ....................................................................................................................................................................... 111
Removal of Tailgate Assembly ........................................................................................................................................ 112
Inspection of Tailgate ......................................................................................................................................................... 114
Reassembly and Installation of Tailgate ...................................................................................................................... 114
Front Control Valve (FCV) ......................................................................................................................................................... 115
Removal of Front Control Valve ...................................................................................................................................... 115
Disassembly and Reassembly of Front Control Valve ............................................................................................. 115
Reinstallation of Front Control Valve ............................................................................................................................ 117
Main Control Valve (MCV) ........................................................................................................................................................ 118
Removal of Main Control Valve ....................................................................................................................................... 118
Disassembly and Reassembly of Main Control Valve ............................................................................................. 119
Main Control Valve Resealing .......................................................................................................................................... 120
Telescopic Cylinder ..................................................................................................................................................................... 121
Removal of Telescopic Cylinder ...................................................................................................................................... 121
Pushout Panel .............................................................................................................................................................................. 123
Wear Block Replacement .................................................................................................................................................. 123
Removal of Pushout Panel ................................................................................................................................................ 124
Installation of Pushout Panel ........................................................................................................................................... 125
Packer Panel .................................................................................................................................................................................. 126
Removal of Packer Panel ................................................................................................................................................... 127
Inspection of Packer Panel ............................................................................................................................................... 129
Installation of Packer Panel .............................................................................................................................................. 130
Carrier Panel .................................................................................................................................................................................. 130
Removal of Carrier Panel ................................................................................................................................................... 130
Inspection and Replacement of Carrier Panel ........................................................................................................... 132
Installation of Carrier Panel .............................................................................................................................................. 132
Roller Replacement/Shimming .............................................................................................................................................. 133
Carrier Roller Adjustment & Maintenance .................................................................................................................. 136
Wear Shoe Replacement .......................................................................................................................................................... 138
Wear Shoe Adjustment ...................................................................................................................................................... 143
Hydraulic Pump ........................................................................................................................................................................... 147
Removal of Hydraulic Pump ............................................................................................................................................ 147
Installation of Hydraulic Pump ........................................................................................................................................ 149
New Pump Preparation ..................................................................................................................................................... 155
Testing a New Pump ........................................................................................................................................................... 156
Cart Tipper (optional) ................................................................................................................................................................ 156
Types of Cart Tippers .......................................................................................................................................................... 156
Models of Cart Tippers ....................................................................................................................................................... 156
Tipper Parts ............................................................................................................................................................................ 160
Lubricating the Cart Tipper .............................................................................................................................................. 160
Adjusting Cart Tipper Hydraulic Pressure ................................................................................................................... 161
Adjusting Cart Tipper Speed ............................................................................................................................................ 163
Electrical System .......................................................................................................................................................................... 165
Testing ..................................................................................................................................................................................... 165
Repair ....................................................................................................................................................................................... 165
Inspection ............................................................................................................................................................................... 165
Troubleshooting Harnesses ............................................................................................................................................. 165
Part # 177725 (rev.04.04.2023)

Reward!
To the first person to notify us of an
error in any of our publications!
If you find what you believe to be an error in any of our publications please
complete the requested information and return the form to us by email.
If you are the first, you will receive a hat by return mail.
I believe I found an error:
In the manual | Part No. | Page(s)
It should say:
Name: Address:
THANKS FOR YOUR HELP!
[e-mail]
Part # 177725 (rev.04.04.2023)

1Introduction
About This Manual
This manual contains information regarding the
correct maintenance of your ALPHA-III™ garbage
truck. Maintenance personnel should read and
understand this information before doing repairs and
maintenance on the vehicle. For information on how
to safely and efficiently operate the ALPHA-III™, please
refer to the related Operator’s Manual that is provided
with your unit.
Topics Not Included in This Manual
Maintenance of the chassis
This is dealt with in the chassis manufacturer’s service
manual.
Cameras and backing-accident prevention systems
For these options, refer to the appropriate
manufacturer’s service manual.
Operating the ALPHA-III™
For procedures related to the operation of the ALPHA-
III™, please refer to the ALPHA-III™ Operator’s Manual.
(A copy of this manual is provided with the truck.)
Parts and assemblies
For parts and assemblies that make up the ALPHA-III™,
and for their respective part number for ordering
purposes, please refer to the ALPHA-III™ Parts Manual.
About the Illustrations in this Manual
Because Labrie Group is constantly updating its
products, illustrations used in this manual may differ
from those of the actual product and accessories,
depending on the model or options that come with
your vehicle.
Schematics
For schematics related to body parts, refer to the
ALPHA-III™ Parts Manual;
Part # 177725 (rev.04.04.2023)

2 Introduction
For electrical schematics, refer to the schematics provided with your ALPHA-III™ unit;
As for pneumatic and hydraulic schematics for your ALPHA-III™ unit, copies are available from
LabriePlus Service Department.
Warranty Registration Form
Do not forget to complete the owner registration form and to send it to Labrie Group. Make sure to
fill out the in-service date. This date will be used as the start date of the warranty period. If the in-
service date is not indicated, the warranty period will start 30 days after the delivery date.
Introducing the ALPHA-III™
Suitable for residential and commercial collection, the LEACH™ ALPHA-III™ is a mid-range rear loader
that offers power and versatility at the same time. With its standard 3.0 yd3 hopper, load sill 5” below
chassis frame and a packing cycle of up to 19 seconds (with the regen valve option), the ALPHA-III™ is
ready to tackle any residential or commercial routes you have for it.
The ALPHA-III™ is equipped with a diamond-shaped ejection (pushout) panel and curved body
technology that help distribute loads evenly and maximize volume inside the body.
The main purpose of the ALPHA-III™ is to safely and efficiently load, compact, transport and unload
refuse. The following describes how the unit performs those tasks in the most basic terms. For a more
detailed description of the unit and its components, read the complete ALPHA-III™ Maintenance
Manual. Before going further, you will need to become familiar with specific terms that are used when
referring to the ALPHA-III™ garbage truck.
Terms You Need to Know
Body’s main components are the hopper, the packer panel, the tailgate, the pushout panel, and the
carrier panel. During collection, refuse is contained inside the body.
Some trucks may be equipped with a cart tipper or a push bar. If the latter is installed, a reeving
cylinder or a winch is provided.
The hopper is the area of the body where refuse is dumped. The packer panel is the piece of
equipment that pushes refuse into the body. The carrier panel is the piece of equipment to which is
attached the packer panel. The carrier panel “carries” the packer inside the hopper. The pushout (or
ejection) panel is the piece of equipment that is used to eject garbage at landfill sites. The tailgate is
the rear pivotal door that prevents refuse from exiting the body during collection. At landfill, the
tailgate is raised to allow discharge of refuse.
Operating controls for the packer, carrier panel, container handling system, and tipper (optional)
are located on the right-hand side of the tailgate.
Operating controls for the pushout panel and tailgate are located on the left-hand side of the body,
not far from the cab.
Part # 177725 (rev.04.04.2023)

Introduction 3
TERMSYOU WILL NEED TO KNOW
TAILGATE
ASSEMBLY
BODY
ASSEMBLY
HOPPER
LOADING
EDGE
HYDRAULIC
TANK
PUSHOUT
PANEL
CARRIER
PANEL
PACKER
PANEL
Part # 177725 (rev.04.04.2023)

4 Introduction
Waste Handling Process
The waste handling process in a ALPHA-III™ rear-loader garbage truck is a three-step process: 1.
loading; 2. packing; 3. unloading. Take a look at the following illustrations. They will help you
understand how these steps relate to one another.
Loading
Refuse is first loaded into the hopper of the tailgate assembly. The carrier and packer panels, which
sweep up and pack the refuse from the hopper, will be in the “home” position.
Packing
When the operator starts the packing cycle, the carrier and packer panels move rearward over the
load.
Next, the carrier and packer panels automatically stop at the “interrupted cycle” position.
CARRIER
PANEL
PACKER
PANEL
“Home” position
Carrier and packer
panels move over load
1
2
PACKER
PANEL
CARRIER
PANEL
“Interrupted cycle”
Part # 177725 (rev.04.04.2023)

Introduction 5
The operator again activates the packing cycle. The carrier and packer panels move forward and
sweep the refuse from the hopper up into the body and pack it against the pushout panel. Having
completed a cycle, the carrier and packer panels are back into the “home” position and the hopper is
cleared for more refuse.
Also, during the packing cycle, considerable hydraulic pressure is applied to the cylinders which
control movement of the carrier and packer panels. This causes the refuse to be compacted tightly
allowing for a large carrying capacity.
Before starting to load waste into the truck, the pushout panel is positioned at the back of the body,
and it moves gradually forward from the pressure exerted on it by the increasing quantity of waste
being packed by the packer.
Once the body is full, the ALPHA-III™ can be moved to the dumpsite for unloading.
Unloading
At the dumpsite, the unit is unloaded in two easy steps:
1. The tailgate is raised by the operator.
2. The pushout panel is moved to the rear of the body, pushing out the load.
PACKER
PANEL
CARRIER
PANEL
PUSHOUT
PANEL
Packing position
2
1
PACKER
PANEL
CARRIER
PANELPUSHOUT
PANEL
Pushout panel moves
forward
Part # 177725 (rev.04.04.2023)

6 Introduction
After unloading, the tailgate is lowered and “latched” to the body.
Container Handling Systems
The main purpose of a refuse body is to load, compact, transport and unload refuse. To assist in
loading refuse from containers, various container handling systems are available to be mounted on
LeachTM rear loaders.
A refuse container may be a mobile residential one (1) cubic yard container with casters or a ten (10)
cubic yard stationary commercial container. The equipment required to lift and empty these
containers will vary according to the container’s type and size.
The following are some handling systems that could be used:
A hydraulically operated container push bar for containers of 1 to 3 cubic yard capacity.
A drum winch or roof-mounted reeving cylinder for containers with capacities of four (4) or more
cubic yards.
Drum winches are rated at various pounds of pull. The ALPHA-III™ drum winch and reeving cylinder
are rated at 12,000 lbs.
NOTE:LeachTM bodies can be equipped with more than one container handling system.
TAILGATE
Tailgate raised
Pushout panel moves
rearward ejecting the
load
TAILGATE
PUSHOUT
PANEL
REARWARD
AD
Part # 177725 (rev.04.04.2023)

Introduction 7
Terms You Need to Know
Hook
1. Throat Opening
2. Back
3. Heel
4. Hook Safety Latch
5. Tip
6. Base
____________________________
Container
1. Trunnion Bar
2. Hook Attachment
3. Lid
____________________________
Warning! Only containers that meet the American National Standards Institute (ANSI) regulations
should be used in conjunction with LEACH™ Container Handling Systems.
PUSH BAR
DRUM
WINCH
LIFTING
CYLINDER
CYLINDER
REEVING
DRUM
WINCH
PUSH BAR
1
2
3
4
5
6
3
1
2
Part # 177725 (rev.04.04.2023)