Hitachi ZW120-6 Wheel Loader Technical Manual Troubleshooting TTNSA60-EN-00

Service Manual consists of the following separate Part No.
Technical Manual (Operational Principle) : Vol. No.TONSA60-EN
Technical Manual (Troubleshooting) : Vol. No.TTNSA60-EN
Workshop Manual : Vol. No.WNSA60-EN
Engine Manual : Vol. No.ETLADA0-EN

CONTENTS

Group 1 Introduction
Operational Performance Tests.......................................T4-1-1
Preparation for Performance Tests................................T4-1-2
Group 2 Standard
Operational Performance Standard Table..................T4-2-1
Sensor Activating Range...................................................T4-2-8
Group 3 Engine Test
Engine Speed........................................................................T4-3-1
Lubricant Consumption....................................................T4-3-3
Group 4 Machine Performance Test
Travel Speed..........................................................................T4-4-1
Service Brake Function Check.........................................T4-4-4
Service Brake Wear Amount.............................................T4-4-6
Parking Brake Function Check........................................T4-4-7
Bucket Stopper and Bell Crank Stopper
Clearance...........................................................................T4-4-8
Hydraulic Cylinder Cycle Time.......................................T4-4-10
Dig Function Drift Check.................................................T4-4-12
Bucket Levelness................................................................T4-4-13
Control Lever Operating Force......................................T4-4-14
Control Lever Stroke.........................................................T4-4-16
Group 5 Component Test
Primary Pilot Pressure.........................................................T4-5-1
Secondary Pilot Pressure...................................................T4-5-3
HST Pump Delivery Pressure............................................T4-5-4
HST Pump Relief Pressure.................................................T4-5-5
HST Charge Pump Delivery Pressure............................T4-5-7
HST Pump Displacement Angle Control Pressure....T4-5-8
Main Relief Set Pressure..................................................T4-5-10
Steering Relief Pressure...................................................T4-5-14
Brake/Transmission Pump Delivery Pressure...........T4-5-16
Transmission Clutch Pressure........................................T4-5-17
HST Motor Displacement Angle Control
Pressure............................................................................T4-5-19
Accumulator Gas Pressure (Ride Control
Circuit)..............................................................................T4-5-21
Accumulator Gas Pressure Adjustment
Procedure (Ride Control Circuit).............................T4-5-23
Group 6 Adjustment
REWRITE OF AFTERTREATMENT DEVICE SERIAL
NO........................................................................................T4-6-1
HOW TO CLEAR FAULT CODE...........................................T4-6-2

AIR BLEEDING FROM THE DEF DEFROSTING
PIPING.................................................................................T4-6-4
REMEDY AT ENGINE OIL CHANGE REQUEST...............T4-6-5
REMEDY AT DEF PRESSURE DECREASE.........................T4-6-6
REMEDY AT DEF ABNORMAL QUALITY........................T4-6-8
CLEAN DEF TANK................................................................T4-6-10
REMEDY WHEN MIXING OIL IN DEF TANK.................T4-6-12
AFTERTREATMENT DEVICE FORCIBLE MANUAL REGENERATION PROCEDURE...................................T4-6-13