Hitachi ZW370-6 Wheel Loader Repair Manuals

Service Repair Manual (Troubleshooting) : Vol. No.TTNHJ4 (540 Pages)
Operation Manual : Vol. No.TONHJ40 (525 Pages)
Workshop Manual : Vol. No.WNHJ40 (869 Pages)
Circuit diagram: 26 Pages
Hitachi ZW370-6 Wheel Loader Service Manual
The manual is applicable for the Hitachi ZW370-6 Wheel Loader Model
Service Manual consists of the following:
For Model ZW370-6 as mentioned above:
Service Manual (Troubleshooting) : Vol. No.TTNHJ4 (540 Pages)

Table of Content of the Workshop Manual

SECTION 1 GENERAL INFORMATION

Group 1 Precautions for Disassembling and
Assembling
Group 2 Tightening
Group 3 Painting
Group 4 Bleeding Air
Group 5 Pressure Release Procedure
Group 6 Preparation

SECTION 2 MAINTENANCE STANDARD

Group 1 Body
Group 2 Front Attachment

SECTION 3 BODY

Group 1 Cab
Group 2 Counterweight
Group 3 Center Hinge
Group 4 Engine
Group 5 Radiator Assembly
Group 6 Hydraulic Oil Tank
Group 7 Fuel Tank
Group 8 Pump Device
Group 9 Control Valve
Group 10 Pilot Valve
Group 11 Brake Charge Valve
Group 12 Combination Valve
Group 13 DEF Tank
Group 14 Flow Regulator Valve
Group 15 Cooling Fan System
Group 16 Aftertreatment Device
Group 17 Ride Control Valve and Accumulator
Group 18 Battery Disconnect Switch

Table of Content of the Technical Manual

SECTION 4 OPERATIONAL

PERFORMANCE TEST
Group 1 Introduction
Group 2 Standard
Group 3 Engine Test
Group 4 Machine Performance Test
Group 5 Component Test
Group 6 Adjustments

SECTION 5 TROUBLESHOOTING

Group 1 Diagnosing Procedure
Group 2 Monitor
Group 3 e-Service
Group 4 Component Layout
Group 5 Troubleshooting A
Group 6 Troubleshooting B
Group 7 Air Conditioner
Group 8 Joystick Steering System

Table of Content of the Operation Manual

SECTION 1 GENERAL

Group 1 Specifications
Group 2 Component Layout
Group 3 Component Specifications

SECTION 2 SYSTEM

Group 1 Controller
Group 2 Control System
Group 3 Engine System
Group 4 Hydraulic System
Group 5 Electrical System

SECTION 3 COMPONENT OPERATION

Group 1 Pump Device
Group 2 Control Valve
Group 3 Cooling Fan System
Group 4 Steering Pilot Valve
Group 5 Steering Valve
Group 6 Pilot Valve
Group 7 Charging Circuit
Group 8 Drive Unit
Group 9 Axle
Group 10 Brake Valve
Group 11 DEF Supply System
Group 12 Others
Hitachi ZAXIS ZW370-6 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.

Hitachi ZW370-6 Lift Arm Auto Leveler Height Kickout Control
Purpose:

The lift arm height kickout control stops the lift arm as it is raising. It stops at any position – between where the lift arms are horizontal and fully raised – that has been preset by the operator.

IMPORTANT: After replacing the lift arm angle sensor, Main Controller (MC) (Main), or Main Controller (MC) (Sub), perform learning control of lift arm angle sensor (12) prior to performing work. (Refer to SECTION 4 OPERATIONAL PERFORMANCE TEST.) Operation:

1. The lift arm height kickout control position is able to be viewed on the setting screen of dual lift arm auto leveler – height kickout, which is memorized in MC (Sub) (1).
2. Adjust the lift arm height kickout control to the required level and select the height kickout ON to make this feature effective.
3. MC (Sub) (1) receives a signal from lift arm angle sensor (12).

4. MC (Sub) (1) energizes lift arm raising coil (6) of pilot valve (5) as the lift arm is raised/and the detent function is applied at the control lever. Pilot pressure oil is directed to lift arm spool (9) of multiple control valve (8) to put it into the raise position and it holds it in this state.

5. Pressurized oil from the main pump is supplied to the bottom end of lift arm cylinder (10) and the lift arm continues to rise.
6. MC (Sub) (1) determines the stopping position of the lift arm (pre-selected by the operator), and MC (Sub) (1) deenergizes lift arm lowering detent coil (7) on pilot valve (5).

7. Pilot pressure oil from loader pilot valve (5) shifts lift arm spool (9) of multiple control valve (8) to the neutral position from what was previously the raise position. Then, the lift arm stops.