Zoomlion ZT68J User Manual

I
Foreword
This Service and Maintenance Manual applies to the ZT20J (ZT68J) aerial work platform (hereinafter
referred to as the AWP).
This manual describes proper inspection, servicing and maintenance. Users must fully understand and
apply the contents described in this manual to maximize the performance and ensure the long-term safe
and efficient use. This manual does not cover the use and maintenance of the engine. For details on
engine, please refer to the engine instruction manual.
The manual includes the structure and schematic diagram of the main components. If it is necessary to
repair and replace the components, the material code of the required replacement parts can be found in
Parts Manual.
This manual should be considered a permanent part of your machine and should remain the machine at
all times.
Do not repair the parts marked with professional maintenance. Zoomlion AWP Machinery
Company does not take the consequence for wrong maintenance.
The highest criterion users must keep in mind that Safety first! Pay special attention to the safety
control device for regular inspection. Do not operate the machine when the safety device fails or
working abnormally. Do not modify the structure or add additional parts for more functions.
Otherwise, you will be responsible for any personal injury or damage caused by the unauthorized
modification.
The warranty period for the aerial work platform is as specified in this Service and Maintenance
Manual. When maintenance is required, our company provides on-site service or please go to our
designated maintenance point for maintenance.
Our company reserves the right to continually revise the contents of this manual with technical
improvements. Any changes are subject to change without notice. Some of the pictures in this
manual may not match the actual product due to design improvement, etc., but it does not affect
your use. The product status is subject to the actual product.
Symbols and their description:
Danger indicates an imminently dangerous situation. If not avoided, will result in death or

Zoomlion ZT68J Specifications

General

Brand	Zoomlion
Model	ZT68J
Category	Lifting Systems
Language	English

Summary

Foreword

Safety Warnings

Contains CAUTION, WARNING, and DANGER notices regarding safety.

SECTION 1 MAINTENANCE SAFETY INSTRUCTION

SECTION 2 TECHNICAL PARAMETERS

Performance and Specifications

Key performance metrics and detailed equipment specifications.

Capacities and Component Specifications

Fluid capacities and specifications for engine and battery.

Functional Speed and Torque Requirements

Machine functional speeds, testing procedures, and torque specs.

Lubrication and Pressure Settings

Hydraulic oil specs, lubrication, and pressure settings.

SECTION 3 GENERAL INTRODUCTION

Machine Preparation, Inspection, and Maintenance Overview

General guidance on preparing, inspecting, and maintaining the machine.

Hydraulic System Cleanliness and Oil

Maintaining hydraulic system cleanliness and selecting hydraulic oil.

Hydraulic Oil Replacement and Cylinder Drift Test

Procedures for hydraulic oil replacement and cylinder drift testing.

Section 3 Inspection and Preventive Maintenance Schedule

Overview of inspection types (Pre-start, Pre-delivery, Daily, Annual, Preventive).

SECTION 4 CHASSIS AND TURNTABLE

Tire and Wheel Maintenance

Procedures for tire inflation, damage assessment, replacement, and installation.

Traveling Drive System Overview

Description of the traveling drive system components and operation.

Slewing Mechanism Gear Clearance Adjustment

Procedure for adjusting gear clearance in the slewing mechanism.

SECTION 5 BOOM AND PLATFORM

Boom Assembly and Disassembly Safety

Safety precautions and disassembly steps for the boom assembly.

SECTION 6 HYDRAULIC AND ELECTRICAL SYSTEM MAINTENANCE

Hydraulic Filter Maintenance

Procedures for maintaining high pressure, oil filling, and return oil filters.

Pressure Setting and Starting Procedures

Fault Code List

Common Faults and Troubleshooting Methods

SECTION 7 ELECTRICAL INFORMATION AND SCHEMATIC

Hydraulic Schematics