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AGT Agrotk-H12 - User Manual

AGT Agrotk-H12
51 pages
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H12 MINI CRAWLER EXCAVATOR
OPERATION & MAINTENANCE MANUAL

Table of Contents

Questions and Answers

  • R
    robertsonrebeccaAug 14, 2025
    Why has the crawler tangled up on my AGT Compact Excavator?
    • T
      Thomas CannonAug 14, 2025
      If the crawler on your AGT Compact Excavator is tangled, here's what you should check: 1. A loose crawler can cause tangling. Tighten the crawler to resolve this. 2. Moving too fast on rugged terrain can also lead to tangling. Ensure the guide wheel moves slowly in front on rugged roads.
  • D
    Daniel TurnerAug 22, 2025
    How to fix noisy structural components in AGT Compact Excavator?
    • S
      Shannon MclaughlinAug 23, 2025
      Noisy structural components in your AGT Compact Excavator can be caused by: 1. Loose fasteners. Inspect and tighten them. 2. Aggravated abrasion between the bucket and the end face of the bucket rod. Adjust the clearance to less than 1mm.
  • T
    Thomas OliverAug 30, 2025
    What to do if bucket teeth keep dropping from my AGT Compact Excavator?
    • S
      Shawna JonesAug 30, 2025
      Bucket teeth falling off during operation of your AGT Compact Excavator can occur due to: 1. A deformed spring or weakened elasticity of the bucket tooth pin. Change the bucket tooth pin. 2. An unmatched bucket tooth pin and seat. Replace the bucket tooth pin.
  • M
    Mary TaylorNov 6, 2025
    What to do if my AGT Compact Excavator does not move?
    • L
      Lindsay OwensNov 6, 2025
      If the AGT Compact Excavator doesn't move, several issues could be the cause: * The hydraulic oil level might be low, preventing the main pump from sucking oil. Add enough hydraulic oil to resolve this. * A blocked oil filter could be the culprit. Replace the filter and clean the system. * A damaged engine coupling (like a plastic or elastic plate) will need replacing. * The main pump itself might be damaged, requiring replacement or repair. * Low or zero servo system pressure requires adjustment to regular pressure. If the servo overflow valve fails to increase pressure, disassemble and wash it. If the spring is fatigued, add a washer or change the spring. * A safety valve set at low pressure or stuck needs adjustment to regular pressure. If pressure doesn't increase, disasse...

Summary

Chapter I Usage Features and Performance Parameters of H12 Excavators

Section I Usage and features

Details the operational capabilities and versatility of the excavator.

Section II Main performance parameters

Presents key dimensions and technical specifications of the excavator.

Chapter II Basic Structures and Work Principle of H12 Excavators

Section I Overview of H12 Excavators

Introduces the main components and overall division of the excavator.

Section II Work Principle of Excavators

Explains how the engine's power is converted and transmitted to operate the machine.

Section III Basic Structure of H12 Excavators Mechanical System

Describes the fundamental mechanical systems: power, drive, swing, and traveling.

Hydraulic System - Rotary Motor

Details the structure of the hydraulic system, specifically the rotary motor.

Main Pump

Details the components and structure of the hydraulic main pump.

Traveling Motor

Explains the disc valve motors used for the excavator's movement.

Section IV Schematics of Main Valve

Provides schematic diagrams of the main hydraulic control valves.

Chapter III Service Technologies of H12 Excavators

Section I Basic Construction Knowledge

Covers fundamental principles of the excavator's control system and operations.

Section II Preparation for Work

Outlines pre-operation checks, maintenance, and preheating procedures.

Section III Operational Essentials

Guides on basic operations like traveling, steering, and excavation techniques.

Section IV Operational Precautions

Lists crucial safety prohibitions and precautions during operation.

Chapter VI Maintenance of H12 Excavators

Section I Daily Inspection and Maintenance

Specifies daily checks for engine oil, hydraulic oil, fuel, and other components.

Section II Periods of Overhaul, Medium and Minor Repair

Provides a schedule for periodic maintenance tasks like greasing and fluid changes.

A Grease

Details lubrication points for work equipment pins, slewing bearing, and gears.

B. Engine oil

Covers engine oil level checks, oil filter replacement, and oil type recommendations.

C. Hydraulic system

Outlines procedures for checking hydraulic oil level and changing hydraulic oil.

V. Inspection of hose and pipeline

Describes daily and periodic checks for hydraulic hoses and pipelines.

Fuel system

Details fuel tank capacity, filling procedures, and oil-water separator inspection.

Electrical system - battery

Guides on checking battery electrolyte, terminals, and replacing the battery or fuses.

Maintenance under the special cases

Provides maintenance precautions for various environmental conditions.

Chapter XII Troubleshooting

Section I General Troubleshooting

Emphasizes the importance of maintenance for performance and service life.

Section II Troubleshooting of Mechanism System

Lists common symptoms and solutions for mechanical system issues.

Section III Troubleshooting of Hydraulic System

Addresses problems related to hydraulic system operation and their fixes.

Section IV Troubleshooting of Electrical Control System

Covers fault codes and diagnostic procedures for the electrical system.

Section V Troubleshooting of Diesel Engine

Provides solutions for common engine starting and running problems.

AGT Agrotk-H12 Specifications

General IconGeneral
BrandAGT
ModelAgrotk-H12
CategoryCompact Excavator
LanguageEnglish