Hitachi ZW 370-6 User manual

370-6

ENMNHG-NA1-2ZW370-6 WHEEL LOADER OPERATOR'S MANUAL

PRINTED IN JAPAN (T) 2018, 06

URL:http://www.hitachi-c-m.com

ENMNHG-NA1-2

PART NO.

Wheel Loader

Operator's Manual

Serial No. 005201 and up

This book is printed on recycled paper.

INTRODUCTION

Read this manual carefully to learn how to operate and

service your machine correctly. Failure to do so could

result in personal injury or machine damage.

This standard specification machine can be operated

under the following conditions without being modified.

Atmospheric Temperature: -20 °C to 40 °C (-4 °F to 104 °F)

Altitude: 0 m to 2000 m (0 ft to 6600 ft)

In case the machine is used under conditions other than

described above, consult your authorized dealer.

This manual should be considered a permanent part of

your machine and should remain with the machine when

you sell it.

This machine is of metric design. Measurements in this

manual are metric. Use only metric hardware and tools as

specified.

Right-hand and left-hand sides are determined by

facing in the direction of forward travel.

Write product identification numbers in the Machine

Numbers section. Accurately record all the numbers

to help in tracing the machine should it be stolen.

Your dealer also needs these numbers when you order

parts. If this manual is kept on the machine, also file the

identification numbers in a secure place off the machine.

Use only diesel fuel with quality specified in JIS K-2204,

EN-590 or ASTM D-975 which contents 15 ppm or lower

sulfur.

Also use fuel that complies with solid contamination level

of class 18/16/13 of ISO4406-1999 (solid contamination

includes dust). If the fuel specified above is not used,

exhaust gas that exceeds the regulation values may be

discharged, causing serious problem on the engine.

Consult your authorized dealer.

Warranty is provided as a part of Hitachi’s support

program for customers who operate and maintain their

equipment as described in this manual. The warranty is

explained on the warranty certificate which you should

have received from your dealer.

This warranty provides you with the assurance that

Hitachi will back its products where defects appear within

the warranty period. In some circumstances, Hitachi also

provides field improvements, often without charge to the

customer, even if the product is out of warranty.

Should the equipment be abused, or modified to

change its performance beyond the original factory

specifications, the warranty will become void and field

improvements may be denied.

Setting fuel delivery above specifications or otherwise

overpowering machines will result in such action.

Only qualified, experienced operators officially licensed

(according to local law) should be allowed to operate

the machine. Moreover, only officially licensed personnel

should be allowed to inspect and service the machine.

PRIOR TO OPERATING THIS MACHINE, INCLUDING

COMMUNICATION SYSTEM, IN A COUNTRY OTHER

THAN A COUNTRY OF ITS INTENDED USE, IT MAY

BE NECESSARY TO MAKE MODIFICATIONS TO IT SO

THAT IT COMPLIES WITH THE LOCAL REGULATORY

STANDARDS (INCLUDING SAFETY STANDARDS)

AND LEGAL REQUIREMENTS OF THAT PARTICULAR

COUNTRY. PLEASE DO NOT EXPORT OR OPERATE

THIS MACHINE OUTSIDE OF THE COUNTRY OF ITS

INTENDED USE UNTIL SUCH COMPLIANCE HAS

BEEN CONFIRMED. PLEASE CONTACT HITACHI

CONSTRUCTION MACHINERY CO., LTD. OR ANY OF

OUR AUTHORIZED DISTRIBUTOR OR DEALER IF YOU

HAVE ANY QUESTIONS CONCERNING COMPLIANCE.

In this manual, urea water is indicated as DEF/AdBlue®.

“DEF” stands for the Diesel Exhaust Fluid. AdBlue®

is a registered trademark of the Verband der

Automobilindustrie e.V. (VDA).

All information, illustrations and specifications in this manual are based on the latest product information available at the

time of publication. The right is reserved to make changes at any time without notice.

CALIFORNIA

Proposition 65 Warning

Diesel engine exhaust and some of its constituents are known

to the State of California to cause cancer, birth defects, and

other reproductive harm.

T

MACHINE NUMBERS

SAFETY

SAFETY LABELS

COMPONENTS NAME

OPERATOR’S STATION

BREAK-IN

OPERATING THE ENGINE

MOVING THE MACHINE

OPERATING THE MACHINE

TRANSPORTING

MAINTENANCE

MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS

STORAGE

SPECIFICATIONS

INDEX

TROUBLESHOOTING

ENMNHG-NA1-2

MEMO

..................................................................................................................................................................................................

CONTENTS

MACHINE NUMBERS .........................................................1

SAFETY .......................................................................... S-1

Recognize Safety Information ....................................................S-1

Understand Signal Words.............................................................S-1

Follow Safety Instructions............................................................S-2

Prepare for Emergencies...............................................................S-3

Wear Protective Clothing..............................................................S-3

Protect Against Noise ....................................................................S-4

Inspect Machine ..............................................................................S-4

General Precautions for Cab........................................................S-5

Use Handrails and Steps ...............................................................S-6

Never Ride Attachment.................................................................S-6

Adjust Operator’s Seat...................................................................S-6

Ensure Safety Before Rising from or Leaving Operator’s

Seat .................................................................................................S-7

Fasten Your Seat Belt......................................................................S-7

Move and Operate Machine Safely...........................................S-8

Handle Starting Aids Safely .........................................................S-8

Operate Only from Operator’s Seat ..........................................S-9

Jump Starting ...................................................................................S-9

Investigate Job Site Beforehand ............................................. S-10

Equipment of Head Guard, ROPS, FOPS............................... S-11

Provide Signals for Jobs Involving Multiple Machines.... S-11

Keep Riders Off Machine ........................................................... S-12

Drive Safely..................................................................................... S-12

Drive Machine Safely (Work Site)............................................ S-13

Drive Safely with Bucket Loaded ............................................ S-14

Drive on Snow Safely .................................................................. S-14

Travel on Public Roads Safely................................................... S-15

Avoid Injury from Rollaway Accidents.................................. S-15

Avoid Accidents from Backing Up and Turning ................ S-16

Avoid Positioning Bucket or Attachment Over Anyone

....................................................................................................... S-17

Avoid Tipping................................................................................. S-17

Never Undercut a High Bank.................................................... S-18

Dig with Caution........................................................................... S-18

Perform Truck Loading Safely .................................................. S-18

Avoid Power Lines........................................................................ S-19

Precautions for Operation......................................................... S-19

Precautions for Lightning.......................................................... S-19

Object Handling ........................................................................... S-20

Protect Against Flying Debris .................................................. S-20

Park Machine Safely..................................................................... S-21

Store Attachments Safely.......................................................... S-21

Transport Safely ............................................................................ S-22

Handle Fluids Safely−Avoid Fires............................................S-23

Practice Safe Maintenance ....................................................... S-24

Warn Others of Service Work ................................................... S-25

Support Machine Properly........................................................ S-25

Stay Clear of Moving Parts ........................................................ S-26

Support Maintenance Properly............................................... S-26

Prevent Parts from Flying .......................................................... S-27

Prevent Burns................................................................................. S-27

Replace Rubber Hoses Periodically........................................ S-28

Avoid High-Pressure Fluids....................................................... S-28

Prevent Fires................................................................................... S-29

Evacuating in Case of Fire.......................................................... S-30

Beware of Exhaust Fumes..........................................................S-31

Precautions for Welding and Grinding ................................. S-31

Avoid Heating Near Pressurized Fluid Lines....................... S-31

Avoid Applying Heat to Lines Containing Flammable

Fluids ........................................................................................... S-32

Precautions for Handling Accumulator and Gas

Damper....................................................................................... S-32

Precautions for Diesel Exhaust Fluid (DEF).......................... S-32

Remove Paint Before Welding or Heating........................... S-33

Beware of Asbestos and Silicon Dust and Other

Contamination......................................................................... S-33

Prevent Battery Explosions ....................................................... S-34

Service Air Conditioning System Safely ............................... S-34

Handle Chemical Products Safely........................................... S-35

Dispose of Waste Properly......................................................... S-35

Notes for Aftertreatment Device ............................................ S-36

Precautions for Communication Terminal........................... S-36

Precaution for Communication Terminal Equipment

(Option) ...................................................................................... S-37

Articulation Stopper (Lock Bar)............................................... S-38

Joystick Steering System ON/OFF (Option) ........................ S-39

SAFETY LABELS........................................................... S-40

COMPONENTS NAME.................................................... 1-1

Components Name ........................................................................1-1

OPERATOR’S STATION .................................................. 1-3

Aftertreatment Device...................................................................1-3

Automatic regeneration ..............................................................1-5

Repeated inhibiting of aftertreatment device cleaning

..........................................................................................................1-6

Cab Features......................................................................................1-7

Front Console....................................................................................1-8

Joystick Steering (Option)............................................................1-9

Right Console.................................................................................1-10

Fingertip Control Type ..........................................................1-10

Multi-Function Joystick Type .............................................. 1-11

Monitor Panel ................................................................................1-12

Parking Brake Indicator (Red)...................................................1-13

Brake Oil Low Pressure Indicator (Red)................................. 1-13

Hydraulic Oil Level Indicator (Red)......................................... 1-13

Low Steering Oil Pressure Indicator (Option) (Red) .........1-14

Transmission Warning Indicator (Red)..................................1-14

Communication Error Indicator (Yellow) ............................. 1-14

Discharge Warning Indicator (Red)........................................ 1-14

Engine Warning Indicator (Red)..............................................1-15

Overheat Indicator (Red) ...........................................................1-15

Engine Oil Low Pressure Indicator (Red) ..............................1-15

Air Filter Restriction Indicator (Red)....................................... 1-16

Preheat Indicator (Yellow)......................................................... 1-16

Coolant Temperature Gauge....................................................1-17

Fuel Gauge......................................................................................1-17

Turn Signal Indicator (Green) ...................................................1-18

High Beam Indicator (Blue)....................................................... 1-18

CONTENTS

Work Light Indicator (Yellow)................................................... 1-18

Clearance Light Indicator (Green) .......................................... 1-19

Control Lever Lock Indicator (Red)......................................... 1-19

Multi Function Monitor ..............................................................1-20

Default Setting ..............................................................................1-21

Basic Screen....................................................................................1-22

How to Use Screens.....................................................................1-23

Displaying Basic Screen........................................................ 1-23

Monitor Operation ................................................................. 1-27

Alarm Occurrence Screen.......................................................... 1-28

Remedy............................................................................................ 1-30

DEF/SCR System Alarm...............................................................1-33

DEF/AdBlue® Level Alarm .................................................... 1-33

Urea SCR System Malfunction............................................ 1-34

Aftertreatment Device Regeneration ................................... 1-35

Aftertreatment Device Regeneration

Status Display ..................................................................... 1-35

Automatic regeneration (Auto-regeneration).............. 1-36

Manual Regeneration............................................................ 1-37

Main Menu......................................................................................1-38

Ride Control Drive Speed Setting (Option).........................1-39

Dual Lift Arm Auto-Leveler ....................................................... 1-40

Height/Lower Kickout ON/OFF, Stop Height Setting

.................................................................................................. 1-41

Brightness Adjustment...............................................................1-42

Mail (Option) .................................................................................. 1-44

Setting Menu .................................................................................1-46

Date and Time................................................................................1-47

Time adjustment..................................................................... 1-47

Date Adjustment.....................................................................1-49

Display Mode Setting............................................................ 1-51

Auto Idling Stop............................................................................1-53

Auto idling stop: ON/OFF.....................................................1-53

Acting Time Setting................................................................ 1-54

Rear View Camera Monitor .......................................................1-55

Aftertreatment Device Regeneration Inhibited................ 1-57

Setting Procedure................................................................... 1-57

Transmission Setting...................................................................1-59

Shift Change Delay Mode Setting ....................................1-59

Lockup Setting......................................................................... 1-61

Traction Control Setting ....................................................... 1-63

Parallel/Tandem Switching Height Setting.........................1-65

Warm Up Operation ....................................................................1-67

Display Item Selection................................................................ 1-69

Main Menu Display Order Change......................................... 1-71

Information Menu........................................................................ 1-73

Operation Condition...................................................................1-74

Fuel Consumption .................................................................. 1-74

Maintenance ..................................................................................1-76

Maintenance Notice............................................................... 1-76

Time Remains and Maintenance Interval....................... 1-78

Troubleshooting ...........................................................................1-80

Monitoring......................................................................................1-82

Front Console Switches, Pedals, Steering Wheel and

Joystick Steering (Option).................................................... 1-85

Hazard Switch................................................................................ 1-86

Work Light Switch ........................................................................ 1-87

Parking Brake Switch...................................................................1-88

Neutral Lever Lock (for the Forward/Reverse Lever) ....... 1-89

Horn Switch.................................................................................... 1-89

Key Switch.......................................................................................1-90

Steering Wheel..............................................................................1-90

Joystick Steering (Option)......................................................... 1-91

Joystick Steering Lever .........................................................1-91

Forward/Reverse Switch....................................................... 1-91

Joystick Steering System Switch .......................................1-91

Turn Signal Lever ..........................................................................1-92

Light Switch.................................................................................... 1-94

High-Low Beam Switch.............................................................. 1-95

Accelerator Pedal..........................................................................1-95

Brake Pedal .....................................................................................1-95

Service Brake ............................................................................ 1-95

Declutch Brake......................................................................... 1-95

Forward/Reverse Lever and Shift Switch............................. 1-96

Forward/Reverse Lever .........................................................1-96

Shift Switch ...............................................................................1-96

Tilt, Telescopic Lever/Steering Column Tilt Pedal ............1-97

Wiper Switch ..................................................................................1-97

Wiper Operation...................................................................... 1-97

Front/Rear Wiper Switch....................................................... 1-98

Right Console / Switches...........................................................1-99

Fingertip Control Type ..........................................................1-99

Loading Control Levers ............................................................1-100

Right Console / Switches.........................................................1-102

Multi-Function Joystick Type ............................................1-102

Loading Multi-Function Joystick Lever (Option).............1-103

Auxiliary Control Lever (Option) ...........................................1-104

Power Mode Selector Switch .................................................1-104

Forward/Reverse Selector Switch.........................................1-105

Operational Procedure........................................................1-105

Loading Control Lever Lock Switch .....................................1-106

Declutch Position Switch.........................................................1-106

Travel Mode Selector Switch..................................................1-107

Fan Reverse Rotation Switch..................................................1-108

OFF.............................................................................................1-108

AUTO ........................................................................................1-108

Manual Operation ................................................................1-109

2nd/3rd Speed Limit Switch (Option) ................................1-110

Hydraulic Coupler Switch (Option)......................................1-110

Aftertreatment Device Regeneration Switch...................1-110

Secondary Steering Operation Check Switch

(Option) ....................................................................................1-111

Ride Control Switch (Option) .................................................1-112

AUTO..........................................................................................1-112

OFF.............................................................................................1-112

Hold Switch ..................................................................................1-114

Right Console Slide Lever........................................................1-114

Horn Switch .................................................................................1-114

Quick Power Switch...................................................................1-115

DSS (Down Shift Switch)..........................................................1-116

Cigar Lighter (24 V DC Electrical Outlet) ............................1-117

Using Cigar Lighter...............................................................1-117

CONTENTS

Ash Tray..........................................................................................1-117

Auto Air Conditioner.................................................................1-118

Feature......................................................................................1-118

Components Name..............................................................1-119

Controller Part Name and Function ...............................1-120

Cab Heater Operation .........................................................1-122

Cooling Operation................................................................1-123

Defroster Operation.............................................................1-124

Cool Head/Warm Feet Operation....................................1-124

Tips for Optimal Air Conditioner Usage .............................1-125

For Rapid Cooling .................................................................1-125

When Windows Become Fogged ....................................1-125

Off-Season Air Conditioner Maintenance....................1-125

Adjusting Operator's Seat (Air Suspension Type Seat)

.....................................................................................................1-126

Components Name..............................................................1-126

Rear Tray ........................................................................................1-127

Electric Power Output (Option).............................................1-127

Fuse Box.........................................................................................1-128

Fuse Box A ...............................................................................1-129

Fuse Box B................................................................................1-129

Hot/Cool Box................................................................................1-130

Tray and Drink Holder...............................................................1-130

ROPS Cab (With Right Side Door).........................................1-131

Front Interior Light.....................................................................1-133

Rear Interior Light ......................................................................1-133

Sun Visor........................................................................................1-134

Emergency Exit Hammer.........................................................1-134

Coat/Hat Hook.............................................................................1-134

Upper Switch Panel (Option)..................................................1-135

Rotary Light Switch (Option)..................................................1-135

Outside Rear View Mirror.........................................................1-136

Inside Rear View Mirror ............................................................1-136

Cab Door........................................................................................1-136

Door Lock Knob ..........................................................................1-137

Door Open/Close Lever............................................................1-137

Window Open/Close Levers ...................................................1-137

ROPS Cab (Without Right Side Door)..................................1-138

Front Interior Light.....................................................................1-140

Rear Interior Light ......................................................................1-140

Sun Visor........................................................................................1-141

Emergency Exit Hammer.........................................................1-141

Coat/Hat Hook.............................................................................1-141

Upper Switch Panel (Option)..................................................1-142

Rotary Light Switch (Option)..................................................1-142

Outside Rear View Mirror.........................................................1-143

Inside Rear View Mirror ............................................................1-143

Cab Door........................................................................................1-143

Door Lock Lever ..........................................................................1-144

Door Open/Close Bar................................................................1-144

Window Open/Close Levers ...................................................1-144

Battery Disconnect Switch .....................................................1-145

Switch Operation........................................................................1-146

Articulation Stopper (Lock Bar).............................................1-147

Towing Pin ....................................................................................1-148

Inspection/Maintenance Side Access Cover.....................1-149

Rear Grille......................................................................................1-150

Steps................................................................................................1-151

Tool Box .........................................................................................1-151

Vandal-Resistant Devices.........................................................1-152

BREAK-IN ....................................................................... 2-1

Break-in Period for New Machine..............................................2-1

Work Mode for Break-in ................................................................2-1

OPERATING THE ENGINE .............................................. 3-1

Inspect Machine Daily Before Starting ....................................3-1

Check Before Starting....................................................................3-3

Starting Engine ................................................................................3-6

Starting in Cold Weather...............................................................3-8

Check After Starting .......................................................................3-9

Using Booster Batteries.............................................................. 3-10

Warm Up.......................................................................................... 3-12

Cold Weather Warm Up.............................................................. 3-13

Stopping Engine...........................................................................3-15

MOVING THE MACHINE ................................................ 4-1

Driving the Machine.......................................................................4-1

Starting to Move..............................................................................4-2

Shift Range of Auto Transmission ........................................4-5

Power Mode Selector ...............................................................4-6

Shift Change Delay Mode .......................................................4-6

Parking Brake Switch......................................................................4-7

Drive Speed Change.......................................................................4-8

Changing Forward/Reverse Drive Direction..........................4-8

Steering Wheel.................................................................................4-9

Joystick Steering (Option)......................................................... 4-10

Secondary Steering (Option) ...................................................4-11

Emergency Stop and Restart of Operation......................... 4-11

Precautions for Traveling ...........................................................4-12

Operating in Water or on Soft Ground .................................4-13

Precautions for Driving on Slopes.......................................... 4-14

Precautions to be Taken if Machine Failure Occurs..........4-15

Stop ................................................................................................... 4-16

Parking .............................................................................................4-18

Emergency Stopping ..................................................................4-19

Auto Brake.......................................................................................4-20

OPERATING THE MACHINE........................................... 5-1

Loading Control Levers .................................................................5-1

Control Lever Lock ..........................................................................5-4

Declutch Position Switch..............................................................5-5

Adjustment of Bucket Auto Leveler..........................................5-6

Adjustment of Bucket Angle Switch.........................................5-8

Adjustment of Dual Lift Arm Auto Leveler.......................... 5-10

Auto Idling Stop............................................................................5-11

Auto Idling Stop Operating Condition............................ 5-12

Aftertreatment Device Manual Regeneration ...................5-13

Before Operation ..........................................................................5-16

Precautions for Operation.........................................................5-16

Ensure Safety When Operating on Road Shoulders ........ 5-16

Avoid Overloading.......................................................................5-17

Avoid Rapid Steering Changes and/or Sudden

Braking........................................................................................ 5-17

CONTENTS

Avoid Operation with Loads on Only One Side................. 5-17

Excavation.......................................................................................5-18

Loading Accumulated Soil...................................................5-18

Digging and Loading Level Ground................................. 5-19

Grading ............................................................................................5-20

Loading ............................................................................................5-21

Load and Carrying Method ................................................. 5-21

Loader and Dump Truck Combination Method...........5-22

V-Shape Loading..................................................................... 5-22

I-Shape Loading ...................................................................... 5-22

Dumping into Truck or Hopper..........................................5-23

Dozing.............................................................................................. 5-24

Stock Piling .....................................................................................5-24

Removing Snow............................................................................5-25

Lifting Wheel Loader................................................................... 5-25

Precautions for After Operation..............................................5-26

TRANSPORTING ............................................................ 6-1

Transporting by Road ....................................................................6-1

Selecting a Trailer ............................................................................6-1

Loading / Unloading on Trailer...................................................6-2

Fastening Machine for Transporting ........................................6-4

Transporting Wheel Loader (Urgent Situation) ....................6-5

Precautions for Driving On Roads........................................6-5

Precautions for Towing ............................................................6-5

Releasing Parking Brake ..........................................................6-7

Towing Method................................................................................6-9

Lifting Machine .............................................................................6-10

MAINTENANCE.............................................................. 7-1

Correct Maintenance and Inspection Procedures...............7-1

Check the Hour Meter Regularly................................................7-3

Layout..................................................................................................7-4

Lubrication Guide......................................................................7-5

Preparations for Inspection and Maintenance .....................7-6

Articulation Lock..............................................................................7-8

Inspection/Maintenance Side Access Cover..........................7-8

Rear Grille...........................................................................................7-9

Inspection and Maintenance Table........................................7-10

Kind of Oils...................................................................................... 7-14

Grease .........................................................................................7-14

Engine Oil .................................................................................. 7-14

Transmission Oil ...................................................................... 7-14

Axle Oil........................................................................................7-15

Hydraulic Oil ............................................................................. 7-15

Recommended Coolant ....................................................... 7-15

List of Consumable Parts ...........................................................7-16

A. Greasing......................................................................................7-18

B. Engine.......................................................................................... 7-24

Check Engine Oil Level ......................................................... 7-24

Change Engine Oil .................................................................7-25

Replace Engine Oil Filter.......................................................7-27

C. Power Train ................................................................................ 7-29

Check Transmission Oil Level..............................................7-29

Change Transmission Oil...................................................... 7-30

Change Transmission Oil Filter........................................... 7-30

Clean Torque Converter Air Breather...............................7-33

Check Axle Oil Level...............................................................7-34

Change Axle Oil....................................................................... 7-36

Replace Axle Oil Cooler Line Filter (Option).................. 7-38

Clean Axle Oil Cooler Fins (Option) .................................. 7-38

D. Hydraulic System.....................................................................7-39

Inspection and Maintenance of Hydraulic

Equipment ...........................................................................7-39

Check Hydraulic Oil Level ....................................................7-40

Change Hydraulic Oil............................................................. 7-41

Clean Suction Filter ................................................................7-43

Clean Pilot Oil Filter................................................................7-44

Line Filter in Steering Circuit..........................................7-44

Line Filter in Brake Circuit ............................................... 7-45

Line Filter in Joystic Steering Circuit (Option) ......... 7-46

Replace Hydraulic Oil Return Filter................................... 7-47

Replace Air Breather Element............................................. 7-48

Check Pilot Circuit Accumulator Function, Gas

Leakage, Looseness, and Damage ..............................7-49

Check Ride Control Accumulator Function, Gas

Leakage, Looseness, and Damage (Option) ............ 7-50

Check Gas Pressure in Ride Control Accumulator

(Option).................................................................................7-50

Check Gas Pressure in Steering Accumulator...............7-50

Check Hoses and Lines .........................................................7-51

E. Fuel System................................................................................ 7-56

Check Fuel Level......................................................................7-56

Recommended Fuel ......................................................... 7-56

About Biodiesel Fuel ........................................................7-56

Refueling ..............................................................................7-57

Drain Water and Sediment from Fuel Tank .................... 7-58

Drain Fuel Filter........................................................................ 7-59

Draining Procedures (Pre-Filter)................................... 7-59

Bleed Air from the Fuel System..................................... 7-60

Replace Fuel Main Filter Element......................................7-62

Replace Fuel Pre-Filter Element.........................................7-64

Clean Fuel Supply Pump Strainer......................................7-65

Clean Fuel Priming Solenoid Pump Strainer.................7-66

Check Fuel Hoses .................................................................... 7-67

Check Water Separator (Option)........................................7-68

F. Air Cleaner...................................................................................7-70

Clean and Replace Air Cleaner Element .........................7-70

G. Cooling System ........................................................................ 7-71

Check Coolant Level .............................................................. 7-72

Check Drive Belt ...................................................................... 7-73

Change Coolant.......................................................................7-75

Clean Radiator/Oil Cooler Cores and Other Cooling

System ...................................................................................7-78

H. Electrical System......................................................................7-79

Batteries .....................................................................................7-79

Electrolyte Level Check.................................................... 7-81

Check Electrolyte Specific Gravity ...............................7-82

Replace Batteries................................................................7-83

Check Monitor Functions and All Other Instrument

Operation .............................................................................7-83

Check Work Lights ..................................................................7-84

Check Horn and Backup Alarm..........................................7-85

CONTENTS

Check Electrical Harnesses and Fuses .............................7-86

Fuse Box A ................................................................................. 7-87

Fuse Box B..................................................................................7-87

I. Brake System...............................................................................7-88

Check Right and Left Brake Interlocking

Performance........................................................................ 7-88

Check Parking Brake Force .................................................. 7-89

Check Parking Brake Gear Oil Level..................................7-90

Change Parking Brake Gear Oil..........................................7-91

Check Accumulator Function, Gas Leakage, Looseness,

and Damage........................................................................ 7-92

Check Gas Pressure in Accumulator................................. 7-93

Check Brake Disks (Service and Parking)........................ 7-93

J. Tire..................................................................................................7-94

Check and Replace Tire (Tire Pressure)............................7-94

Check Tire for Damage..........................................................7-95

Check Wheel Bolt Torque .....................................................7-95

K. Air Conditioner .........................................................................7-99

Clean/Replace Air Conditioner Circulation/Fresh Air

Filters...................................................................................... 7-99

Check Air Conditioner.........................................................7-101

Check Air Conditioner Piping ...........................................7-101

Check Air Conditioner Condenser..................................7-103

Check Air Conditioner Compressor Belt.......................7-103

Check Refrigerant .................................................................7-104

Replace Air Conditioner Receiver Dryer .......................7-104

Check Compressor and Pulley..........................................7-104

L. Aftertreatment Device .........................................................7-105

Check and Clean Aftertreatment Device......................7-105

M. Urea SCR System...................................................................7-106

Specified DEF/AdBlue® .......................................................7-106

Check DEF Level ....................................................................7-107

Refill DEF ..................................................................................7-107

DEF Exchange procedure...................................................7-109

Replace DEF Supply Module Main Filter.......................7-110

Check Dosing Module.........................................................7-111

N. Miscellaneous.........................................................................7-112

Check Bucket Teeth and Cutting Edge..........................7-112

Check and Replace Seat Belt and Lower Tether.........7-113

Check ROPS Cab, Resin Cab Roof, and Roof

Mounting Bolts.................................................................7-113

Check Windshield Washer Fluid Level ...........................7-113

Check Play Amount in Steering Wheel Movement...7-114

Check Play Amount in Joystick Steering Movement

(Option)...............................................................................7-115

Check Accelerator Pedal Operation, and Exhaust

Gas Color and Noise .......................................................7-116

Check Rearview Mirror and Inside Rearview

Mirror ...................................................................................7-117

Check Steps and Handrails for Damage and

Looseness...........................................................................7-117

Clean Engine Compartment and Hood ........................7-118

Check Sound Absorbing Mat Around Engine ............7-118

Check and Adjust Valve Clearance..................................7-118

Check Engine Compression Pressure ............................7-118

Check and Clean Starter and Alternator.......................7-119

Check Fuel Injector...............................................................7-119

Check Turbocharger.............................................................7-119

Check and Adjust Engine Controller (ECM).................7-119

Check and Clean EGR Valve...............................................7-119

Check and Clean EGR Cooler ............................................7-119

Replace DEF/AdBlue® Supply Module Filter

Element..............................................................................7-119

Check Urea SCR System......................................................7-119

Check Dosing Module.........................................................7-120

Retighten Front Axle and Rear Axle Support

Mounting Bolts.................................................................7-120

Check Tightening Torque of Nuts and Bolts................7-121

MAINTENANCE UNDER SPECIAL ENVIRONMENTAL

CONDITIONS ................................................................. 9-1

Maintenance Under Special Environmental Conditions...9-1

Precautions for Maintenance During Cold Weather

Season............................................................................................9-2

STORAGE ..................................................................... 10-1

Storing the Machine.................................................................... 10-1

TROUBLESHOOTING................................................... 11-1

Troubleshooting ...........................................................................11-1

1. Engine.....................................................................................11-1

2. Engine Auxiliaries............................................................... 11-1

3. Engine does not Start. ...................................................... 11-2

4. Control Lever........................................................................ 11-3

5. Hydraulic System................................................................ 11-3

6. Drive Function ..................................................................... 11-4

7. Others..................................................................................... 11-5

SPECIFICATIONS ......................................................... 12-1

Specifications.................................................................................12-1

Intended Use ............................................................................ 12-1

INDEX........................................................................... 14-1

CONTENTS

MEMO

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Hitachi ZW 370-6 User manual

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