AGT INDUSTRIAL 13.5HP B&S User manual

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PRODUCT MANUAL
13.5HP B&S ENGINE MINI EXCAVATOR
Please read the product manual completely before assembly
Check against the parts list to make sure all parts are received
Wear proper safety goggles or other protective gears while in
assembly
Missing parts or questions on assembly?
Pleasecontact [e-mail]
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WARNING

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TABLE OF CONTENTS
TROUBLESHOOTING
56/56
SERVICE TECHNOLOGIES
15/56
BASIC STRUCTURE
AND WORK PRINCIPLE
13/56
MAIN PERFORMANCE
PARAMETERS
8/56
EXCAVATOR ASSEMBLES
4/56
TO THE OWNERS
3/56
TABLE OF CONTENTS
2/56
NOTES
56/56

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GENERAL COMMENTS
Congratulations for having this Excavator ! Your Excavator was
carefully designed and manufactured to give you years of dependable
service. Your Excavator will require some minor maintenance(such as
cleaning and lubricating) to keep it in top working condition.
Be sure to observe all safety precautions and maintenance procedures
as described in this manual.
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TO THE OWNERS
ABOUT THIS MANUEL
This manual has been designed to help you do a better and
safer job. Read this manual carefully and become familiar with
its contents. Remember, never let anyone operate this unit
without reading the "Safety Precautions" and "Operation
Instructions" sections of this manual.
SERVICE
When service your trencher, pls. remember to use only
manufacturer replacement parts. Substitute parts may not
meet the standards required for safe, dependable operation. To
facilitate parts ordering, pls. record the model No. and serial
No. of the metal plate on your unit.

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BEFORE OPERATION
1. The operator must read the operation manual carefully before
installation, operation or maintenance. Improper operation will
cause the machine damaged or the operator dead.
2. Read all the safe signs and safe declarations. Obey all the
professional safe terms, local laws or the professional
directions.
3. Familiar with the Excavator about functions, specs and
operation. Replace the to-be-damaged parts in time. Make sure all
the hydraulic installations and couplings connect firmly, and all
the safe signs stick on the suitable positions clearly.
BEFORE OPERATION
Always wear proper safety glasses, goggles, or a face
shield when driving pins in or out, or when any operation
causes dust, flying debris, or any other hazardous
material.
2. Don’t modify the Excavator casually.
3. Should keep the machine on the flat ground when repair, far
away from the transportation and other dangerous places.
4. Should use the right tools to repair.
5. Don’t operate the machine, unless you are professional, have
certificates, and familiar with its functions, specs and safe
operation rules.
6. Must not leave the machine when the machine is running. Must
stop the engine at first and then remove the key if want to leave.
SAFETY PRECAUTIONS

5
Safety at All Times
Thoroughly read and understand the
instructions given in this anual before
operation. Refer to the "Safety Label"
section, read all instructions noted on
them.
Do not allow anyone to operate his
equipment who has not fully read and
comprehended this manual and who
has not been roperly trained in the safe
operation of the equipment.
►The operator must not use drugs or
alcohol as they can change the alertness
or coordination of that person while
operating equipment. The operator should
if taking over-the-counter drugs, seek
medical advice on whether he/she can
safely operate the equipment.
►Operator should be familiar with all
functions of the unit.
►Make sure all guards and shields are in
place and secured before operating
implement.
►Keep all persons away from equioment
and work area.
►Start skid steer with steering levers and
hydraulic controls in neutral.
►Operate implement and loader arms
from the driver's seat only.
►Dismounting from a moving unit can
cause serious injury or death.
►A Do not allow anyone to stand between
skid steer and implement while hooking-up
to implement.
►Keep hands, feet, and clothing away
from power-driven parts.
►Watch out for obiects overhead and
along side such as fences buildinas, wires,
trees, limbs, etc..while transporting and
operating attached implement.
►Detach and store implement in an area
where children nomally do not play. Secure
implement by using blocks and supports.
Look For The Safety Alert Symbol
The SAFETY ALERT SYMBOL indicates there is a
potential hazard to personal safety involved and extra
safety precaution must be taken. When you see this
symbol, be alert and carefully read the message that
follows it, In addition to desian and confiauration of
equipment. hazard control, and accident prevention are
dependent upon the awareness. concern, prudence, and
proper training of personnel involved the operation,
transport, maintenance, and storage of equipment.
Be Aware of
Signal Words
A Signal word designates a degree
or level of hazard seriousness.
The signal words are:
DANGER
Incates an imminently hazardous
situation which, if not avoided, will
result in death or serious injury.
This signal word is limited to the
most extreme situations, typically
for machine components that, for
functional purposes, cannot be
guarded.
WARNING
Indicates a potentially hazardous
situation which, if not avoiced,
could result in death or serious
injury, and includes hazards that
are exposed when guards are
removed. It may also be used to
alert against unsafe practices.
CAUTION
Indicates a potentially hazardous
situation which, if not avoided,
may result in minor or moderate
injury. It may also be used to alert
against unsafe practices.
Avoid Underground
Utilities
►Dig Safe
Always contact your local utility
companies (electrical, telephone,
oas, water, sewer, and others)
before digging so that they may
mark the location of any
underground services in the area.
►Be sure to ask how close you
can work to the marks thay
positioned
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For Your Protection
►Thoroughly read and understand
the "Safety Label" section, read all
instructions noted on them.
SAFETY PRECAUTIONS
These are common practices that may or may not be applicable to the products
described in this manual.

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SAFETY PRECAUTIONS
These are common practices that may or may not be applicable to the products
described in this manual.
Shutdown and Storage
Before leaving operator’s
seat
►Lower it arms and
put attachment flat on the
ground.
►Turn off engine and engage
parking brake.
►If included, raise seat bar and
move controls until both lock.
►Remove key to prevent
unauthorized starting.
►Use steps, grab-handles and
anti-slip surfaces when getting
on or off the loader.
►Detach and store implements
in an area where children
normaliy do not play, Secure
implemment by using blocks
and supports.
►IMPORTANT: Do not tow a
load That is more than
double the weight of the
vehicle towing the load.
►Use towing vehicle and
traler of adequate size and
capacity, Secure equipment
towed on a trailor with tie
downs and chains.
►Sudden braking can cause
a towed trailer to swerve
and upset. Reduce speed it
towed trailer is note quipped
with brakes.
Transport Safety
►Comply with slate and local
laws.
►Never travel at a speed which
does not allow adequate control
of steering and stopping Some
rough terrains requre a skower
speed.
►Avoid contact with any over
head utilty lines or electrically
charged conductors.
►Always drive with load on end
of loeder arms low to the
ground.
►Always drive straight up and
down ramps with load on
"uphill" side of skid steer.
►Engage parking brake when
stopped on an incline.
Use Safety
Lights and Devices
►Slow moving selil-propellec
equipment, and towed implements
can create a hazard when driven
on public roads. They are difficult
to see, especially at night.
►Flashing waning lights and turn
signals are recommended
whenever driving on publc roads.
Practice
SafeMaintenance
►Understand procedure
before doing work. Use
proper tools and equipment,
refer to Operator's Manual
for additional information.
►Work in a clean dry area.
►Lower attached implement
to the ground and follow all
shutdown procedures before
leaving the operator's seat to
perform maintenance.
►Allow implement to cool
completely before working on
it.
►Disconnect battery ground
cable (-) before servicing or
adjusting electrical systems or
before welding on implement.
►Do not grease or oil
implement while it is in
operation.
►Inspect all parts. Make sure
perts are in good concition &
instaled properly.
►Remove buidup of grease,
oil, or debris.
►Remove all tools and
unused parts from implement
before operation.
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SAFETY PRECAUTIONS
These are common practices that may or may not be applicable to the products
described in this manual.
Wear
Protective Equipment
►Wear protective clothing and
equipment appropriate for the
job.Clothing should be snug
fitting without fringes and pull
strings to avoid entanglement
with moving parts.
►Prolonged exposure to loud
noise can cause hearing
impairment or hearing loss.
Wear suitable hearing
protection such as eamiuffis or
earplugs.
►Operating equipment safely
requires the operators ull
attention, Avoid wearing radio
headphones while operating
machinery
Wear
Protective Equipment
►Escaping fluid under pressure
can penetrate the skin causing
serious injury.
►Avoid the hazard by relieving
pressure before disconnecting
hydraulic lines or performing
work on the system.
►Make sure all hydrauic fluid
connections are tight and all
ydraulic hoses and lines are in
good condition before applying
ressure to the system.
►Use a piece of paper or
cardboard, NOT BODY PARTS
to check for suspected leaks.
►Wear protective gloves and
safety glasses or goggles when
working with hydraulic systems.
►DO NOT DELAY. If an
accident occurs, see a doctor
familar with this type of injury
immediately. Any fluid injected
into the skin or eyes must be
treated within few hours or
gangrene may result.
Tire Safety
►Tire changing can be dangerous
and should be preformed by
trained personnel using the
correct tools and equipment.
►When inflating tires, use a
clip-on chuck and extension hose
long enough to allow you to stand
to one side and NOT in front of or
over the tire assembly. Use a
safety cage if available.
►When removing and installing
wheels, use wheel handing
equipment adequate for the
weight involved.
Use Seat Belt and ROPS
►Operate only skid
steers equipped with a Roll-Over
Protective Structure (ROPS) and
seat belt.
►Fasten seat belt snugly and
securely to help protect against
serious injury or death from
falling and skid steer overturn.
►Wearing protective equipment
such as safety shoes, safety
glasses, hard hat, and ear plugs
is highly recommended.
Keep Riders
Off Machinery
►Never carry riders or use
Machinery as a person lift.
►Riders obstruct operator's
view.
►Riders could be struck by
foreign objects or thrown
from the machine. Never
allow children to operate
equipment.
Prepare for emergencies
►Be prepared if a fire starts.
►Keep a first aid kit and fire
extinguisher handy.
►Keep emergency numbers
for doctor,
ambulance, hospita and fire
department near phone.

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EXCAVATOR ASSEMBLES
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S/N
PART NO.
PART DESCRIPTION
QTYS
NOTE
1
Upper frame assembly
1
2
Lower frame assembly
1
3
Front work equipment
assembly
1
4
slewing bearing assembly
1
5
Connecting shaft between
boom and upper frame
1
6
Connecting shaft between
boom and upper frame
1
7
Pivot sleeve
2

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EXCAVATOR ASSEMBLES
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S/N
PART NO.
PART DESCRIPTION
QTYS
NOTE
1
1.1
welded dozer shovel
1
2
1.2
welded lower frame
1
3
1.3
slewing joint
1
4
1.4
Rubber crawler
2
5
1.5
Lock nut
2
6
1.6
sprocket nuts
16
7
1.7
Drive wheel
2
8
1.8
Connecting disc
2
9
1.9
sprocket bolts
16
10
1. 10
Bolts fixing the track roller
8
11
1. 11
Traveling motor
2
12
1. 12
Track roller
4
13
1. 13
Idler assembly
2
14
1. 14
Pivot nuts
4
15
1. 15
Connecting shaft of dozer
shovel
2
16
1. 16
Connecting shaft of cylinder
2
17
1. 17
Cylinder of dozer shovel
1
18
1. 18
Bolts fixing idler assembly
8

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EXCAVATOR ASSEMBLES
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S/N
PART NO.
PART DESCRIPTION
QTYS
NOTE
1
2.1
welded upper frame
1
2
2.2
Covers of rear housing
1
3
2.3
Covers of left housing
1
4
2.4
Covers of right housing
1
5
2.5
welded inside support frame
1
6
2.6
Rear counterweight plate
1 set
7
2.7
Arm rest
1
8
2.8
seat and supports
1

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EXCAVATOR ASSEMBLES
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S/N
PART NO.
PART DESCRIPTION
QTYS
NOTE
9
2.9
Left- upper cover
1
10
2. 10
Right - upper cover
1
11
2. 11
L- shaped covers
1
12
2. 12
Console
1
13
2. 13
Pedal
1
14
2. 14
Hydraulic oil tank
1
15
2. 15
Hydraulic oil tank
1
16
2. 16
Hydraulic oil tank support
1
17
2. 17
Diesel tank
1
18
2. 18
Multiway valve
1
19
2. 19
Battery platen
1
20
2.2
Master cylinder
1
21
2.21
Coupler
1
22
2.22
Pump disc
1
23
2.23
Engine
1
24
2.24
Rear bracket base of engine
1
25
2.25
Front bracket base of engine
1
26
2.26
Intake cover
1
27
2.27
Battery
1
28
2.28
Rotary motor
1
29
2.29
slewing bearing
1
30
2.3
Dust cover
1
31
2.31
Main power switch
1
32
2.32
Manual accelerator
1
33
2.33
Key starter
1
34
2.34
Traveling handle
2
35
2.35
work handle
2
36
2.36
Front shovel handle
1

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EXCAVATOR ASSEMBLES
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S/N
PART NO.
PART DESCRIPTION
QTYS
NOTE
1
3.1
Boom
1
2
3.2
Arm
1
3
3.3
Bucket
1
4
3.4
Connecting rod
1
5
3.5
push rod
1
6
3.6
Boom cylinder
1
7
3.7
Arm cylinder
1
8
3.8
Bucket cylinder
1
9
3.9
Medium shaft of boom
1
10
3. 10
Rear shaft of arm cylinder
1
11
3. 11
Front shaft of arm cylinder
1
12
3. 12
Front shaft of boom
1
13
3. 13
Rear shaft of bucket cylinder
1
14
3. 14
Medium shaft of arm
1
15
3. 15
Front shaft of bucket
cylinder
1
16
3. 16
Front shaft of arm
1
17
3. 17
Connecting shaft between
bucket and connecting rod
1
18
3. 18
shaft locker sleeve
7

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MAIN PERFORMANCE PARAMETERS
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Overall dimensions
Unit: mm
9A wheel track
895
B overall length of track
1203
C Ground clearance of platform
357
D Ground clearance of platform tail
800
E Chassis width
930
F Crawler width
180
H Crawler height
313
I Transportation length
2775
J overall height
2219

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Work range
Unit: mm
A Max. digging radius on ground
2850
B Max. digging depth
1650
C Max. digging height
2600
D Ground clearance of platform tail
800
E Chassis width
930
F Crawler width
180
H Crawler height
313
I Transportation length
2775
J overall height
2219
Performance parameters
weight of complete machine kg
900
standard bucket capacity ml
0.025
Rated power kw
8．2Kw/3600r/min
MAIN PERFORMANCE PARAMETERS

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BASIC STRUCTURE AND WORK PRINCIPLE
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Overview on Excavators
Excavator is composed of power train, work equipment, swing mechanism,
control mechanism, drive system, raveling mechanism and auxiliary cquipment,
as shown in fig. 1-1. Mounted on the rotary table are the regular full-swing type
hydraulic excavators, main components of drive system, swing mechanism and
auxiliary devices, which are referred to as upper rotary. Therefore, a excavator
is divided into work equipment, upper rotary and traveling mechanism.
Work Principle of Excavators
Diesel engine changes the chemical energy of diesel into mechanical energy
that is then altered with hwdraulis gear pump to hydraulic energy that is
distributed to each actuating element (such as hydraulic cylinder, swing motor
and traveling motor). Ater that, each actuating ekment transform the lhydraulic
energy back to mechanical energy, driving the work equipment and running the
complete machine.

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BASIC STRUCTURE AND WORK PRINCIPLE
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Movement and power transmission route of excavator shown below:
l. Traveling power route: diesel engine —— coupler —— hydraulic pump（mechanical
energy changed to hydraulic energy）—— distributor valve —— central swing joint ——
traveling motor（hydraulic energy changed to mechanical energy）—— sprocket ——
rubber crawler—— starting of traveling
2. swing power route: diesel engine —— coupler —— hydraulic pump
（mechanical energy changed to hydraulic energy）—— distributor valve—— swing
motor（hydraulic energy changed to mechanical energy）—— slewing bearing ——
realizing of wing
3. Boom power route: diesel engine —— coupler —— hydraulic pump
（mechanical energy changed to hydraulic energy）—— distributor valve —— boom
cylinder （hydraulic energy changed to mechanical energy）——boom movement
4. Arm power route: diesel engine —— coupler —— hydraulic pump（mechanical
energy changed to hydraulic energy）—— distributor valve —— arm cylinder（hydraulic
energy changed to mechanical energy）—— arm movement
5. Bucket power route: diesel engine ——coupler —— hydraulic pump
（mechanical energy changed to hydraulic energy）—— distributor valve ——
bucket cylinder（hydraulic energy changed to mechanical energy）—— bucket movement

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BASIC STRUCTURE AND WORK PRINCIPLE
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Basic structure of excavators mechanical system
1. Power system
Excavator is equipped with single-cylinder air-cooling diesed engine.
2. Drive system
Excavator's drive system could transfer the output power from diesel engine through the
hydraulic system to work equipment, swing mechanism and traveling mechanism.
3. Swing mechanism
Swing mechanism could tum the work equipment and upper rotary leftwards and
rightwards, so as to do the excavating and the unloading, excavators swing mechanism
has to fix the rotary table onto frame and has it swing flexibly, without any inclining risk.
Therefore, excavator is equipped with a slewing support (supports) and a slewing drive
(power ofturntableslewing), which are called by a joint name as swing mechanism.
3.1 Slewing Support
Excavator has its rotary table supported with a rolling bearing, realizing the swinging of
upper rotary.
3.2 Rotary Drive
Excavator adopts the direct drive type. Namely, the output shaft of low-speed
high-torque hydraulic motor is mounted with a driving pinion which meshes with the
slewing gear ring.
4. Traveling Mechanisme
Traveling mechanism supports the complete weight of excavator and drives it to run.
Excavator has the crawler traveling mechanism similar to other crawlers, with one
hydraulic motor driving one track. This excavator adopts low-speed high-torque motor.
When two hydraulic motors run in the same direction, this machine goes straightly forward;
when one motor is supplied with oil and the other is braked, excavator steers around the
braked track; when two motors runs reversely, excavator rotates insitu.
Each part of traveling mechanism is mounted on integral traveling frame. The pressure oil
from hy draulic pump soes through the multi-way directional valve and the central swing
joint into the hydraulic traveling motor that changes the pressure cnerey into output torque
that then goes to sprocket, driving excavator to run.

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BASIC STRUCTURE AND WORK PRINCIPLE
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Each part of traveling mechanism is mounted on integral traveling frame. The pressure oil
from hy draulic pump soes through the multi-way directional valve and the central swing
joint into the hydraulic traveling motor that changes the pressure cnerey into output torque
that then goes to sprocket, driving excavator to run.
Excavator's sprockets are of integral castings and able to correctly engase with track,
featuring balance drive rockets located at rear part of excavator, shortening the tensioner
part and relieving the track abrasion, wear and power cons umption. Each track is
equipped with a tensioner, adjusting the track tension and reducing the track vibration
noise, abrasion, wear and power loss.
5. Work Mechanism
The hydraulic excavator could have multiple work equipment, up to dozens of varicties,
with backhoe and ripper most popular.
Excavator has the boom, am and bucket articulated with each other, as shown in figure and
swing around their articulated points respectively with aid of the hy draulic cylinder,
finishing the excavating, lifting and unloading.
5.1 Boom
As the main component of backhoe work equipment, the intgrated skewed boom is
adopted on excavator.
Being of the most popular type at present, skewed boom could allow excavator to dip
deeper and to lower the unloading depth, satisfying the backhoe requirenents.

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BASIC STRUCTURE AND WORK PRINCIPLE
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5.2 Bucket
5.2.1
1) The longitudinal profile of bucket meets the law of motion of various materials
inside of bucket, facilitating the material flow and minimizing the loading resistance
and thus fulfilling the bucket.
2) Bucket teeth are mounted to increase the linear specific pressure of bucket onto
material, with unit Icutting resistance relatively low and easing to cut in and break soil.
In addition, the teeth are resistant to wear and easy to replace.
3) The load is easy to get off, shortening the unloading time and increasing the
effective capacity of bucket.
5.2.2
Bucket shape and size for backhoe are highly related to work objects. In order to
meet various excavation, one excavator could be equipped with multiple types of buckets,
with backhoe most popular. Bucket tecth could be mounted with rubber pins and bolts.
Connection between bucket and hydraulic cylinder is of linkage mechanism, with
bucket direct articulated with hydraulic cylinder, which drops the rotation angle of bucket
but enables the work torque to change greatly..

20
BASIC STRUCTURE AND WORK PRINCIPLE
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Hydraulic system structure of excavators I. Rotary motor