AGT INDUSTRIAL 13.5HP B&S Product Manual

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sales@agrotkindustrial.com

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

sales@agrotkindustrial.com

https://www.agrotkindustrial.com/

https://www.agrotkindustrial.com

Table of Contents

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Do you have a question about the 13.5HP B&S and is the answer not in the manual?

Questions and answers

Dale Branson

April 17, 2025

Where is the battery located?

1 comments:

Mr. Anderson

May 9, 2025

The exact location of the battery in the AGT INDUSTRIAL 13.5HP B&S is not specified in the provided context.

This answer is automatically generated

Scott

March 13, 2025

Leaking on turntable pump hydraulic are running low when you turn left. I can’t get the pump off to find the problem where the leak is. Can you suggest anything

1 comments:

Mr. Anderson

March 13, 2025

The provided context does not mention a turntable pump or provide specific repair instructions for a hydraulic leak on an AGT INDUSTRIAL turntable pump with part number 13.5HP B&S. However, general steps for addressing hydraulic leaks are as follows:

1. Turn Off the Engine – Ensure the machine is parked on flat ground, lower the bucket, shift the pilot switch to "Lock," turn off the engine, and unplug the ignition key.

2. Inspect for Leaks – Check for lost parts, loosened pipe clamps, twisted hoses, or rubbing pipelines. Use paperboard to detect leaks instead of hands to avoid injury.

3. Tighten or Replace Components – If leaks are found at hose ends, connectors, or surfaces, tighten or replace the affected hoses, O-rings, or clamps.

4. Check for Damage – Do not install bent or damaged hoses or pipelines. Replace any cracked, protruded, or worn-out components.

5. Address Oil Levels – Ensure the hydraulic oil level is sufficient and refill if needed.

6. Consult a Technician – If hydraulic fluid has penetrated the skin or a serious issue is detected, seek professional help immediately.

For more detailed troubleshooting, refer to the machine’s manual.

This answer is automatically generated

Steve

February 26, 2025

What B&S engine is in the QH12? The numbers don’t show up when looking for parts. Thanks

1 comments:

Mr. Anderson

February 26, 2025

The AGT INDUSTRIAL QH12 uses a 13.5HP Briggs & Stratton (B&S) engine.

This answer is automatically generated

Paul S

June 5, 2025

Rubber crawler came off the drive wheel. How do you loosen to adjust track? Safety nut loosens but nothing else?

William Wesley chesser

May 22, 2025

I NEED TRAVELING MOTOR PART NO 1.11FORMX12R

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Summary of Contents for AGT INDUSTRIAL 13.5HP B&S

Page 1 PRODUCT MANUAL 13.5HP B&S ENGINE MINI EXCAVATOR Please read the product manual completely before assembly  WARNING Check against the parts list to make sure all parts are received  Wear proper safety goggles or other protective gears while in ...
Page 2: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS 2/56 TO THE OWNERS 3/56 EXCAVATOR ASSEMBLES 4/56 MAIN PERFORMANCE 8/56 PARAMETERS BASIC STRUCTURE 13/56 AND WORK PRINCIPLE SERVICE TECHNOLOGIES 15/56 TROUBLESHOOTING 56/56 NOTES 56/56 sales@agrotkindustrial.com https://www.agrotkindustrial.com...
Page 3: To The Owners
TO THE OWNERS 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.
Page 4 SAFETY PRECAUTIONS 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.
Page 5 SAFETY PRECAUTIONS These are common practices that may or may not be applicable to the products described in this manual. Safety at All Times Look For The Safety Alert Symbol Thoroughly read and understand the The SAFETY ALERT SYMBOL indicates there is a instructions given in this anual before potential hazard to personal safety involved and extra operation.
Page 6 SAFETY PRECAUTIONS These are common practices that may or may not be applicable to the products described in this manual. Shutdown and Storage Transport Safety Do not tow a ► IMPORTANT: load That is more than Comply with slate and local Before leaving operator’s...
Page 7 SAFETY PRECAUTIONS These are common practices that may or may not be applicable to the products described in this manual. Wear Wear Prepare for emergencies Protective Equipment Protective Equipment ►Be prepared if a fire starts. ►Escaping fluid under pressure ►Wear protective clothing and ►Keep a first aid kit and fire can penetrate the skin causing equipment appropriate for the...
Page 8: Excavator Assembles
EXCAVATOR ASSEMBLES PART NO. PART DESCRIPTION QTYS NOTE Upper frame assembly Lower frame assembly Front work equipment assembly slewing bearing assembly Connecting shaft between boom and upper frame Connecting shaft between boom and upper frame Pivot sleeve sales@agrotkindustrial.com https://www.agrotkindustrial.com...
Page 9 EXCAVATOR ASSEMBLES PART NO. PART DESCRIPTION QTYS NOTE welded dozer shovel welded lower frame slewing joint Rubber crawler Lock nut sprocket nuts Drive wheel Connecting disc sprocket bolts 1. 10 Bolts fixing the track roller 1. 11 Traveling motor 1. 12 Track roller 1.
Page 10 EXCAVATOR ASSEMBLES PART NO. PART DESCRIPTION QTYS NOTE welded upper frame Covers of rear housing Covers of left housing Covers of right housing welded inside support frame Rear counterweight plate 1 set Arm rest seat and supports sales@agrotkindustrial.com https://www.agrotkindustrial.com...
Page 11 EXCAVATOR ASSEMBLES PART NO. PART DESCRIPTION QTYS NOTE Left- upper cover 2. 10 Right - upper cover 2. 11 L- shaped covers 2. 12 Console 2. 13 Pedal 2. 14 Hydraulic oil tank 2. 15 Hydraulic oil tank 2. 16 Hydraulic oil tank support 2.
Page 12 EXCAVATOR ASSEMBLES PART NO. PART DESCRIPTION QTYS NOTE Boom Bucket Connecting rod push rod Boom cylinder Arm cylinder Bucket cylinder Medium shaft of boom 3. 10 Rear shaft of arm cylinder 3. 11 Front shaft of arm cylinder 3. 12 Front shaft of boom 3.
Page 13: Main Performance
MAIN PERFORMANCE PARAMETERS Overall dimensions Unit: mm 9A wheel track B overall length of track 1203 C Ground clearance of platform D Ground clearance of platform tail E Chassis width F Crawler width H Crawler height I Transportation length 2775 J overall height 2219 sales@agrotkindustrial.com...
Page 14 MAIN PERFORMANCE PARAMETERS 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 E Chassis width F Crawler width H Crawler height I Transportation length 2775 J overall height 2219...
Page 15: Basic Structure
BASIC STRUCTURE AND WORK PRINCIPLE 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.
Page 16 BASIC STRUCTURE AND WORK PRINCIPLE Movement and power transmission route of excavator shown below: 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——...
Page 17 BASIC STRUCTURE AND WORK PRINCIPLE 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.
Page 18 BASIC STRUCTURE AND WORK PRINCIPLE 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.
Page 19 BASIC STRUCTURE AND WORK PRINCIPLE 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.
Page 20 BASIC STRUCTURE AND WORK PRINCIPLE Hydraulic system structure of excavators I. Rotary motor sales@agrotkndustrial.com https://www.agrotkindustrial.com...
Page 21 BASIC STRUCTURE AND WORK PRINCIPLE Main Pump DHP006-08 Gear 20CrMnTi DHP006-07 Shim Nylon DHP006-06 Mat Seal Rubber1-4 DHP006-05 Side Plate 25 Steel DHP006-04 Pump QT450-10 DHP006-03 Sealing Rings Prevent Rubber1-4 DU Bearing Assembly Φ21×Φ19×20 DHP006-02 Front Cover QT450-10 Oil Seals NY19X32X7 Assembly GB893.1-86 Back-up Ring 32 65Mn...
Page 22 BASIC STRUCTURE AND WORK PRINCIPLE Traveling Motor Dise Valve Motors-6000 series 005 and 006 Traveling Motor Dise Valve Motors-6000 series 005 and 006 sales@agrotkndustrial.com https://www.agrotkindustrial.com...
Page 23 BASIC STRUCTURE AND WORK PRINCIPLE Schematics of main valve Reserved Steering Traveling Front shovel Traveling Boom Bucket sales@agrotkndustrial.com https://www.agrotkindustrial.com...
Page 24 BASIC STRUCTURE AND WORK PRINCIPLE Electrical system diagram sales@agrotkndustrial.com https://www.agrotkindustrial.com...
Page 25: Service Technologies
SERVICE TECHNOLOGIES Being of high temperature and pressure, the excavator could have the hydraulic oil temperature as high as 85 ℃ the engine silencer temperature as high as 700 ℃ and pressure as high as 16-18MPa. Therefore. the operators should be specially trained to obtain the proper certificates and to be familiar with the contents in this manual before the operations.
Page 26 SERVICE TECHNOLOGIES 2. Maintenance before startup Before startup each shift, it is needed to grease the work equipment and the slewing bearing. 3. Preheating of machine on cold days If it is cold, engine is difficult to start up, fuel may be frozen and hydraulic oil may increase its viscosity.
Page 27 SERVICE TECHNOLOGIES Boom down Arm stretch Right turn Bucket Left turn Bucket Load Unload Arm stretch Boom Up 2.2 Basic excavation Before excavation, the arm cylinder should have angle with the arm as 90, bucket with ground to be excavated as 30. Only in such case, can each cylinder have the max. excavating force.
Page 28 SERVICE TECHNOLOGIES Operational Precautions prohibitions and precautions for hydraulic excavators 1. Avoid the landsliding and the stone falling. 2. Avoid any striking of work equipment. 3. Avoid the bucket from colliding with other vehicle body, the loaded bucket crossing over other vehicle cab or persons.
Page 29 SERVICE TECHNOLOGIES Daily inspection and maintenance Interval (h) Item Quantity Remark Check the engine oil level in sump ★ Check the hydraulic oil level in hydraulic oil tank ★ Check the fuel level in tank ★ Check the oil-water separator to completely ★...
Page 30 SERVICE TECHNOLOGIES Periods of overhaul, medium and minor repair. Interval (h) Item Quantity Remark 1000 1500 2000 2500 4000 Greasing of ★ slewing bearing Greasing of slewing ★ bearing gears Change the engine oil ● ▲ ★ Change the hydraulic oil. △...
Page 31 SERVICE TECHNOLOGIES A Grease Interval（h) Parts Quantity 1000 2000 Pivot at base of boom Pivot at base of boom 1. Lubrication of cylinder ★ work equipment Pivots of bucket and pins connecting rod others: ★ 2. Lubrication of slewing bearing ★...
Page 32 SERVICE TECHNOLOGIES ● Others Pivot between boom and arm; pivot of arm cylinder plunger; pivot at , base of bucket cylinder. slewing bearing - every 250h Park machine on the flat ground. Lower the bucket onto ground. Idle engine at low speed for 5min. Turn the ignition switch to oFF and then take off the key.
Page 33 SERVICE TECHNOLOGIES Interval（h) Parts Quantity 1000 2000 Engine oil ★ Engine oil filter ★ According to the temperature range during the interval, select the viscosity of oil listed in the table below: Recommended engine oil brand: 15W-40 engine oil sales@agrotkndustrial.com https://www.agrotkindustrial.com...
Page 34 SERVICE TECHNOLOGIES Inspection of engine oil level ———each day Change of engine oil ———every 500 h Change the engine oil filter ———every 500 h 1. start up engine to preheat up engine oil properly. 2. Park the vehicle on the flat ground. 3.
Page 35 SERVICE TECHNOLOGIES Inspection and maintenance of hydraulic system Caution: in work, the hydraulic system may become very hot. Please cool the machine down before inspection or maintenance! 1.Before maintenance of hydraulic system, make sure the machine stands on flat and solid ground.
Page 36 SERVICE TECHNOLOGIES I. Inspection of hydraulic oil level ---each day Important: with no hydraulic oil, never start up engine! 1. Park machine on the flat ground. 2. Completely retract the arm cylinder and extend out the bucket cylinder, so as to locate the machine.
Page 37 SERVICE TECHNOLOGIES I.Change the hydraulic oil ---2000 h Replace the hydraulic oil suction filter element-----every 1000 h Important: with no hydraulic oil, never start up engine! 1. Park machine on the flat ground. 2. Completely retract the arm cylinder and extend out the bucket cylinder, so as to locate the machine.
Page 38 SERVICE TECHNOLOGIES V. Inspection of hose and pipeline --Each day --every 250 h Caution: any sprayed fluid could penetrate your skin, leading to personal casualty! Therefore, use a paperboard to check for leakage. In addition, care must be taken to keep your hands and body away from pressure oil. In case of accident, please immediately go to doctor with trauma experience.
Page 39 SERVICE TECHNOLOGIES Interval (h) Check points Abnormal Measures Replace it Hose surface Leakage 1 Replace it Every day Hose end Leakage 2 Tighten or replace the Connector body Leakage 3 hose or o-ring Crack 4 Replace it Hose surface Crack 5 Replace it Hose end Reinforcing material...
Page 40 SERVICE TECHNOLOGIES Fuel system capacity of fuel tank:7L Interval（h) Parts Quantity 1000 2000 2500 4000 Drain dirt out of collector of fuel tank ★ Check the oil-water separator ★ Change the oil-water separator ★ Leakage ★ ★ Check the fuel hose Crack / twist / others ★...
Page 41 SERVICE TECHNOLOGIES Electrical system -battery I. Check the battery electrolyte level and the terminals. Caution: gas inside of battery may explode it. Therefore, keep any spark and flame away from battery.Use a flashlight to check the electrolyte level. In addition, the sulphuric acid in battery electrolyte is as toxic as to burn your skin or your cloth holes or to blind your eyes.
Page 42 SERVICE TECHNOLOGIES Others Interval（h) Parts Quantity 1000 2000 4000 Check if the bucket teeth ★ is worn or loosened. Change the bucket If needed Replace the bucket and connect If needed, replace the bucket and connect the new one to machine. the new one to machine Adjust the connecting rod of bucket If needed...
Page 43 SERVICE TECHNOLOGIES Others Caution: while hitting out or into the connecting pin, care must be taken to prevent against any personal injury due to out-flied metal scrap. Wear the goggles or the safe glasses or safe devices suitable for operations! 1.
Page 44 SERVICE TECHNOLOGIES Check the bolts and nuts for tightening torque every 250 h (initially at 50 h) Check the tightness at initial 50h and then every 250 h. Tighten it to the set torque if needed. Replace it with bolts and nuts with same or higher grade. Important: please use the torque wrench to check the torques of bolts and nuts Metric bolts and nuts Thread dimensions...
Page 45 SERVICE TECHNOLOGIES Maintenance under the special cases Operational conditions Precautions for maintenance Before operation, check all the drain plugs are tightened up. Moor land, rainy or snowy After operation, clean machine and check bolts and nuts for break, damage, looseness or loss. Lubricate all parts to be lubricated on time. Before operation, check all the drain plugs are tightened up.
Page 46: Troubleshooting
TROUBLESHOOTING Section I General To ensure excellent performance of excavator, all components and parts are of high quality. Machine's performance and service life are determined not only by manufacturing quality and assembling quality,but also maintenance quality. The marketing representative and service engineer shall remind the user that preventive maintenance is the easiest and most economical one among various ways of maintenance.
Page 47 TROUBLESHOOTING Symptom Possible causes How to solve Adjust to regular pressure. If it fails to increase the pressure, The safety valve is set at low pressure or disassemble and wash. If the stuck spring is fatigued, ass a washer or change the spring.
Page 48 TROUBLESHOOTING Symptom Possible causes How to solve Change the oil seal and change Central rotation connector is damaged. the groove if it is damaged The high pressure chamber and low pressure chamber of traveling operation Change valve is connected. The right and left Serious leak inside the traveling traveling systems do not Change...
Page 49 TROUBLESHOOTING Symptom Possible causes How to solve Low overloaded valve pressure Adjust Boom (bucket rod and bucket) drops too quick Change the sealing component, or the cylinder drops at a Serious internal leak of cylinder repair the inner wall or groove of certain height even it is cylinder or change the cylinder.
Page 50 TROUBLESHOOTING Symptom Possible causes How to solve Hydraulic oil pipe breaks Change No action of rotation (no Rotary valve rod on main valve is stuck Repair other abnormalities) Rotary motor is damaged Repair or change The rotation support is damaged Change The right and left rotation of multiway valve is Adjust...
Page 51 TROUBLESHOOTING Section IV Troubleshooting of electrical control system Fault codes of electrical control system of excavator The engine fails to start The engine flames out during operation The engine fails to flame out Automatic slow-down does not work Slewing and traveling of all working devices. Principle diagram 1.
Page 52 TROUBLESHOOTING Possible causes Standard value in regular condition and reference value of fault diagnosis Unlocked 1MΩ Between 105 and GND Locked Below1Ω ★Turn the start switch of engine to OFF as preparation and keep it at OFF during diagnosis. If all PS. GND, signals and engine start input are correct while engind start output is abnomal, the engine starter relay fails.
Page 53 TROUBLESHOOTING Section IV Troubleshooting of electrical control system 1. Symptoms of failed startup of engine: When starting the engine, the starter drives the engine but the engine fails to be started. Possible causes: (1) Low battery; (2) Battery terminal is rusted or loose; (3) Battery earth wire is rusted or loose or poor GND ofengine;...
Page 54 TROUBLESHOOTING (6) Inspect and repair the engine. Only when the engine works well can the start-up fail never or seldom happen. 3. Check if it is hard to start the engine Symptom: (1) Starter runs at correct rpm and drives the engine: however, it is hard to start the engine. (2) It is hard to start the engine when it is cold.
Page 55 TROUBLESHOOTING (6) Starter fault. (7) Driving gear of starter is stuck by engine flywheel gear ring. (8) Driving gear of starter adheres to the bearing. (9) The starter fails to drive the engine; (10) Engine fault; How to solve: (1) Check if the battery is fully charged; if not, charge it change the battery if necessary. (2) Connect the battery terminal and connector;...
Page 56: Notes
NOTES sales@agrotkndustrial.com https://www.agrotkindustrial.com...