jcb 3CXG - User Manual

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SERVICE MANUAL

BACKHOE LOADER

3CXG

EN - 9813/4250 - ISSUE 6 - 03/2018

This manual contains original instructions, verified by

the manufacturer (or their authorized representative).

be reproduced, stored in a retrieval system, or

transmitted in any form or by any other means,

electronic, mechanical, photocopying or otherwise,

without prior permission from JCB SERVICE.

www.jcb.com

Foreword

The Operator's Manual

You and others can be killed or seriously injured

if you operate or maintain the machine without

first studying the Operator's Manual. You must

understand and follow the instructions in the

Operator's Manual. If you do not understand

anything, ask your employer or JCB dealer to

explain it.

Do not operate the machine without an Operator's

Manual, or if there is anything on the machine you

do not understand.

Treat the Operator's Manual as part of the machine.

Keep it clean and in good condition. Replace the

Operator's Manual immediately if it is lost, damaged

or becomes unreadable.

Contents

01 - Machine

03 - Attachments, Couplings and Load

Handling

06 - Body and Framework

09 - Operator Station

12 - Heating, Ventilating and Air-

Conditioning (HVAC)

15 - Engine

18 - Fuel and Exhaust System

21 - Cooling System

24 - Brake System

25 - Steering System

27 - Driveline

30 - Hydraulic System

33 - Electrical System

72 - Fasteners and Fixings

75 - Consumable Products

78 - After Sales

Main Page

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This document is a service manual for the JCB 3CXG backhoe loader, providing comprehensive information on its operation, maintenance, and safety. The manual is structured to guide users through various aspects of the machine, from general safety guidelines to detailed procedures for attachments, couplings, and load handling.

Function Description:

The JCB 3CXG is a backhoe loader, a versatile piece of heavy equipment primarily used for excavation, trenching, backfilling, and material handling. It combines the functions of a loader (front bucket) and an excavator (rear backhoe), making it suitable for a wide range of construction, agricultural, and landscaping tasks. The machine is designed for robust performance in various work environments, offering both digging and loading capabilities.

Important Technical Specifications:

While specific technical specifications like engine power, digging depth, or loader capacity are not explicitly detailed in the provided excerpts, the manual's structure implies a complex machine with various systems. Key components and systems covered include:

Engine Compartment: Contains essential components like the air filter assembly, coolant expansion bottle, engine fuel filter, engine oil filter, gearbox oil dipstick, and hydraulic oil dipstick.
Hydraulic System: Critical for operating the loader, backhoe, and other hydraulic attachments. The manual emphasizes the importance of maintaining correct hydraulic fluid levels and pressure.
Main Component Locations: Identifies major parts such as the dipper, stabilisers, hydraulic oil tank, fuel tank, boom, ROPS/FOPS cab, loader arm, and kingpost.
Attachments: The machine supports various attachments, including buckets (excavator and shovel) and other specialized tools, enhancing its versatility. The manual details procedures for installing and removing these attachments.
Protective Structures: Equipped with FOPS (Falling Object Protective Structure) and ROPS (Roll-Over Protective Structure) to ensure operator safety.

Usage Features:

The manual provides extensive guidance on the safe and effective use of the JCB 3CXG.

Operator Responsibility: Emphasizes that the operator is responsible for the safe and efficient operation of the machine, requiring thorough understanding of the manual and adherence to safety warnings.
Worksite Safety: Detailed instructions are provided for safe operation on various worksites, including precautions regarding underground services (gas pipes, electric cables, water pipes), overhead power cables, and structures.
Maintenance Positions: Specific procedures for safely parking the machine, lowering the lift arm, attaching the ground attachment, stopping the engine, and disconnecting the battery are outlined for maintenance tasks. This includes instructions for installing and removing the lift arm safety strut.
Attachments and Load Handling: Comprehensive sections cover the general use, health and safety considerations, and installation/removal procedures for attachments like buckets and shovels. This includes guidance on using suitable lifting devices and correctly positioning attachments.
Teeth Replacement: Instructions for removing and installing bucket teeth are provided, highlighting the importance of proper maintenance for digging efficiency.

Maintenance Features:

The JCB 3CXG service manual places a strong emphasis on regular and correct maintenance to ensure the machine's longevity, safety, and optimal performance.

Scheduled Maintenance: The manual is designed to facilitate scheduled maintenance, with sections on maintenance positions and service point locations.
Cleaning Procedures: Detailed instructions for cleaning the machine are provided, including warnings about using appropriate cleaning agents, protective equipment, and methods (e.g., avoiding high-pressure washing on certain components). It also advises against using steam or hot water directly on the operator's module.
Fluid Level Checks: The presence of a hydraulic oil level indicator and dipsticks for engine oil and gearbox oil indicates routine checks are necessary.
Torque Tightening: The manual highlights the importance of correct torque values for fasteners, advising users to refer to specific PIL (Parts Identification List) numbers for detailed procedures. It also warns against reusing fasteners and emphasizes the need for clean, debris-free components during assembly.
Diagnostic Information: The manual includes information on the machine's diagnostic capabilities, likely through an electronic diagnostic system, to help identify and troubleshoot issues.
Safety During Maintenance: Strict safety protocols are outlined for maintenance, such as ensuring the machine is safe, parked on solid ground, the engine is off, and the battery is disconnected before working on it. Warnings are given about potential hazards like trapped energy and the need for qualified personnel.
Component Identification: Clear diagrams and descriptions of main components and service points aid in accurate maintenance and troubleshooting.
Lubrication: The manual mentions the importance of lubrication for attachments and provides instructions for applying grease to all points and linkages.