Hitachi ZW80, ZW90 Wheel Loader Repair Manuals

Service Repair Manual (Troubleshooting) : Vol. No.TT4FG (242 Pages)
Operation Manual : Vol. No.TO4FG (208 Pages)
Workshop Manual : Vol. No.W4FG (272 Pages)
Hitachi ZW80, ZW90 Wheel Loader Service Manual
The manual is applicable for the Hitachi ZW80, ZW90 Wheel Loader Model
Service Manual consists of the following:
For Model ZW80, ZW90 as mentioned above:
Service Manual (Troubleshooting) : Vol. No.TT4FG (242 Pages)

Table of Content of the Workshop Manual

SECTION 1 GENERAL

Group 1 Precautions for Disassembling
and Assembling
Group 2 Tightening
Group 3 Painting

SECTION 2 BODY

Group 1 Control Valve
Group 2 Main Pump

SECTION 3 TRAVEL SYSTEM

Group 1 Cab
Group 2 HST Pump
Group 3 HST Motor
Group 4 Reduction Gear
Group 5 Axle
Group 6 Master Cylinder
Group 7 Power Steering
Group 8 Steering Cylinder

SECTION 4 FRONT ATTACHMENT

Group 1 Front Attachment
Group 2 Cylinder

Table of Content of the Technical Manual

SECTION 1 GENERAL

Group 1 Specifications
Group 2 Component Layout
Group 3 Component Specifications

SECTION 2 SYSTEM

Group 1 Control System
Group 2 Hydraulic System
Group 3 Electrical System

SECTION 3 COMPONENT OPERATION

Group 1 Priority Valve
Group 2 Control Valve
Group 3 Steering Valve
Group 4 HST Pump
Group 5 HST Motor
Group 6 Reduction
Group 7 Axle
Group 8 Brake Master Cylinder
Group 9 Others
Manual guide composition
Hitachi ZAXIS ZW80, ZW90 service manual consists of the Troubleshooting and the Workshop Manual.

Information included in the Service Manual: Technical information needed for redelivery and delivery, operation and activation of all devices and systems, operational performance tests, and troubleshooting procedures.

Information included in the Workshop Manual: Technical information needed for maintenance and repair of the machine, tools and devices needed for maintenance and repair, maintenance standards, and removal / installation and assemble / disassemble procedures.

Damage of piston seals in bucket cylinder
Perform the internal oil leak check of bucket cylinder.

1. Lower the lift arm to the lowest position and tilt back (decline backward) the bucket 2. Remove hose from bucket cylinder rod side. Install plug in order to prevent the oil spout from hose .

3. Start the engine. Set the loader control lever to the Tilt Back (Decline Backward) position and apply hydraulic pressure on the bucket cylinder bottom side.
4. If pressure oil flows out from bucket cylinder port, the piston seals in cylinder may be damaged.