Komatsu WA320-6 with SAA6D107E-1 Engine Wheel Loader Service Manual

Name: Komatsu WA320-6 with SAA6D107E-1 Engine Wheel Loader Service Manual
Brand: MidWestTech
SKU: CEBM022801
Price: 139.67 USD
Availability: InStock

1,397 pages · Publication CEBM022801

$139.67

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Models: WA320-6 with SAA6D107E-1 Engine
Serial coverage: A35001 and up
Manual type: Service Manual
Pages: 1,397
Publication: CEBM022801
Condition: Brand new

Komatsu WA320-6 with SAA6D107E-1 Engine Wheel Loader Service Manual, publication CEBM022801

What's inside

From the manual's own table of contents: 5 sections, 563 entries. See sample pages (PDF, 868 KB)

Search the contents

FOREWORD8 topics

12CONTENTS
GENERAL
STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
STANDARD VALUE TABLES
TESTING AND ADJUSTING
TROUBLESHOOTING
DISASSEMBLY AND ASSEMBLY
DIAGRAMS AND SCHEMATICS

STRUCTURE, FUNCTION AND124 topics

Front Differential
Rear Differential
Torque Proportioning Differential
Limited Slip Differential (if equipped)
Final Drive
Front Final Drive
Rear Final Drive
STEERING SYSTEM
Steering Piping Diagram
Steering Column
Priority Valve
Orbitrol Valve
Operation
Connection of Hand Pump and Sleeve
Cushion Valve
Steering Cylinder
Emergency Steering Piping Diagram (if equipped)
Emergency Steering Valve (if equipped)
Steering Relief Valve (if equipped)
BRAKE SYSTEM
Brake Piping Diagram
Charge Valve
Brake Valve
Braking Operation
Inching Valve
Accumulator (for Brake)
Slack Adjuster
Brakes
Front Brake
Rear Brake
Parking Brake System
Brake Control
Parking Brake
UNDERCARRIAGE AND FRAME
Axle Mounting and Center Hinge Pin
Tires
Radial Tire
Bias Tire
HYDRAULIC SYSTEM
Work Equipment Hydraulic Piping Diagram
Work Equipment Control Lever Linkage
Multi-Function Mono-Lever Type
2-Lever Type (if equipped)
Hydraulic Tank
Breather
4-Gear Pump
Work Equipment Control Valve
2-Spool Type
3-Spool Type
Relief Valve
Safety-Suction Valve
Suction Valve
Operation of Work Equipment Control Valve
Cutoff Valve
PPC Valve
Work Equipment PPC Valve: Mono Lever Type
Work Equipment PPC Valve: 2-Lever Type (if equipped)
Attachment PPC Valve
Lock Valve (for PPC Circuit)
Accumulator (for PPC Circuit)
ECSS Valve
Accumulator (for ECSS)
Work Equipment
Work Equipment Linkage
Bucket
Bucket Positioner and Boom Kickout
Operation of Proximity Switch
Work Equipment Cylinders
Lift Cylinder
Bucket Cylinder
CAB ENVIRONMENT
Air Conditioner
Air Conditioner Piping Diagram
Refrigerant Circuit Diagram
Air Conditioner Unit
Blower and Intake Unit
Compressor
Condenser
Receiver
Air Conditioner Panel
ELECTRICAL SYSTEM
Machine Monitor System
System Circuit Diagram
Machine Monitor
Items Displayed on Monitor
Machine Monitor Operation Switches
Setting Machine Monitor
Troubleshooting Function
Character Display Function
Operator Mode Functions
Service Mode Functions
Input and Output Signals
Electrical System (HST Controller System)
Input and Output Signals Diagram
HST Controller Gearshifting Control Function
HST Controller Protection Function
Cooling Fan Control Function
HST Controller
ECSS System
ELECTRONIC TRANSMISSION CONTROL
KOMTRAX Terminal System
KOMTRAX Terminal
Engine Starting Circuit
Engine Stopping Circuit
Preheating Circuit
Engine Output Lowering Function
Automatic Warm-up Function
Parking Brake Circuit
Max. Traction Switch (if equipped)
Multi-Function Knob
Modification of Multi-Function Lever
Sensors
Speed Sensor
HST Oil Temperature Sensor
Brake Oil Temperature Sensor
HST Oil Pressure Sensor
HST Oil Filter Clogging Sensor
Coolant Level Sensor
Fuel Level Sensor
Accelerator Pedal Sensor
Air Cleaner Clogging Sensor
Water-in-Fuel Sensor
Boom Kick-Out Proximity Switch
Bucket Positioner Proximity Switch

TESTING AND ADJUSTING115 topics

BELTS
Air Conditioner Compressor Belt
Testing the Tension
Adjusting the Tension
Replacing Alternator Belt
ACCELERATOR PEDAL
Testing Operating Effort
Testing Operating Angle
DIRECTIONAL LEVER
Checking Operating Effort
Checking Travel
POWER TRAIN OIL PRESSURES
HST Oil Pressure
Testing High-Pressure Cutoff Oil Pressure
Testing Low-Pressure Relief Pressure
Testing Servo Piston Control Pressure (DA Pressure)
Testing Servo Piston Actuating Pressure
Adjusting High-Pressure Cutoff Valve
Adjusting Low-Pressure Relief Valve
Adjusting DA Pressure
Testing Clutch Control Pressure
Steering Wheel
Measuring Play
Measuring Operating Effort
Measuring Operating Time
Steering Oil Pressure
Measuring Main Relief Pressure
Adjusting Main Relief Pressure
Bleeding Air from Steering Circuit
HYDRAULIC DRIVE FAN
Measuring Fan Speed
Measuring Fan Drive Oil Pressure
WHEEL BRAKE SYSTEM
Measuring Pressing Angle of Brake Pedal
Brake Pedal Linkage
Testing
Adjusting
Measuring Brake Performance
Accumulator Charge
Measuring
Measuring Brake Oil Pressure
Testing Wear of Wheel Brake Disc
Bleeding Air from Brake Circuit
Releasing Residual Pressure in Brake Accumulator Circuit
Testing Parking Brake Performance
Parking Brake Control Cable
WORK EQUIPMENT SYSTEM
Work Equipment Control Lever
Measuring Travel
Work Equipment Hydraulic Pressure
PPC Oil Pressure
Measuring PPC Valve Basic Pressure
Measuring PPC Valve Output Pressure
Bleeding Air from Hydraulic Circuit
Bleeding Air from Work Equipment PPC Circuit
Bleeding Air from Cylinders
Releasing Residual Pressure in Hydraulic Circuit
Between Each Hydraulic Cylinder and Control Valve
In Brake Accumulator Circuit
In PPC Accumulator Circuit
Work Equipment Positioners
Bucket Positioner
Boom Kickout Switch
Proximity Switch Operation Pilot Lamp
ELECTRICAL SYSTEM TROUBLESHOOTING
Procedure for Testing Diodes
When Using Digital Type Circuit Tester
When Using Analog Type Circuit Tester
Preparation for Troubleshooting Electric System
Boost Pressure and Temperature Sensor (BOOST PRESS & IMT)
Supply Pump IMV Solenoid (FUEL REGULATOR)
Common Rail Pressure Sensor (FUEL RAIL PRESS)
Engine Coolant Temperature Sensor (COOLANT TEMP)
Terminal Installed at Plant Before Shipment
Terminal Retrofitted Machine After Shipment
Starting Operation
Application for the Start of Use
Komtrax Terminal Lamps
Contents of 7-Segment and Dot Displays for CPU
Adjusting Machine Monitor
Adjusting for Replaced, Reassembled, or Added Sensor/Controller
Adjustment for User’s Needs
Special Functions of Machine Monitor (EMMS)
Normal and Special Functions of Machine Monitor
Functions and Flow of Service Mode
Operator Mode
Service Meter Display Function (1)
Traction Level Selection Function (2)
HST Function Selection Function (3)
Odometer Display Function (4)
Maintenance Monitoring Function (5)
Telephone Number Input Function (6)
Language Selection Function (7)
Monitor Brightness Adjustment Function (8)
Travel Speed/Engine Speed Display Selecting Function (9)
Travel Speed/Engine Speed Display/Non-Display Selecting Function (10)
Action Code Display Function (11)
Failure Code Display Function (12)
Service Mode
Switching to Service Mode and Screen Display (1)
Electrical System Fault History Display Function (ELECTRIC FAULT) (2)
Mechanical System Fault History Display Function (MACHINE FAULT) (3)
Real-Time Monitoring Function (REAL-TIME MONITOR) (4)
Real-Time Monitoring Code Tables
Engine Reduced-Cylinder Function (CYLINDER CUT-OUT) (5)
No-Injection Cranking Function (6)
Adjustment Function (TUNING) (7)
Maintenance Monitoring Function (8)
Operating Information Display Function (9)
Optional Device Selecting Function (10)
Machine Serial Number Input Function (11)
Model Select Function (MACHINE WA***) (12)
Initialize Function (13)
Setting Procedure for Service Meter and Odometer
PM-CLINIC INSPECTION TABLE

TROUBLESHOOTING277 topics

CANNON Connectors for Engine
AMP Connectors for Engine
FRAMATOME Connectors for Engine
PACKARD Connectors for Engine
OT Series Connectors for Engine
T-BRANCH BOX and T-BRANCH ADAPTER TABLE
MODE CHART
INFORMATION CONTAINED IN TESTING PROCEDURES
TROUBLESHOOTING BY FAILURE CODE
Failure Code Table
FUSE BOX AND SLOW-BLOW FUSES
Connection Table of Fuse Box and Slow-Blow Fuses
Fuse Box: FS1
Fuse Box: FS2
Slow-Blow Fuses
FAILURE CODES
Brake: Oil Pressure Reduction
HST Filter: Clogging
Travel Speed: Overrun Alarm
AA1ANX
Air Cleaner: Clogging
Alternator R System: Hot Short
AB00MA
Alternator R System: Ground Fault/Disconnection/Low Charge Voltage
B@BAZG
Engine: Oil Pressure Reduction
B@BAZK
Engine Oil: Low Level
B@BCNS
Engine: Overheat
B@BCZK
Engine: Low Coolant Level
B@C6NS
Front Brake: High Oil Temperature
B@CRNS
HST: High Oil Temperature
Abnormality in Engine Controller
Engine Ne or Bkup Speed Sensor Error
Charge Pressure Sensor High Error
Charge Pressure Sensor Low Error
Throttle Sensor High Error
Throttle Sensor Low Error
Coolant Sensor High Error
Coolant Sensor Low Error
Charge Temperature Sensor High Error
Charge Temperature Sensor Low Error
Lowering of Speed by Abnormally High Charge Temperature
Sensor Power Supply 2 Low Error
Atmospheric Pressure Sensor High Error
Atmospheric Sensor Low Error
Sensor Power Supply 2 High Error
Engine Overspeed
Ne Speed Sensor Power Supply Error
IMV (IMA) Short Circuit
IMV (IMA) Disconnection
Injector #1 Open/Short Error
Injector #5 Open/Short Error
Injector #3 Open/Short Error
Injector #6 Open/Short Error
Injector #2 Open/Short Error
Injector #4 Open/Short Error
Calibration Code Inconsistency
Injectors Drive Circuit Error
Sensor Power Supply 1 Low Error
Sensor Power Supply 1 High Error
Abnormally High Level in Water Sensor
Abnormally Low Level in Water Sensor
Idle Validation Switch Error
Idle Validation Action Error
Engine Oil Pressure Switch Error
Battery Voltage Low Error
Battery Voltage High Error
Common Rail Pressure High Error 2
Common Rail Pressure Sensor High Error
Common Rail Pressure Sensor Low Error
Lowering of Torque by Abnormally High Charge Temperature
Common Rail Pressure High Error 1
Supply Pump Pressure Very Low Error
Engine Ne Speed Sensor Error
Engine Bkup Speed Sensor Phase Error
All Continuous Data Lost Error
Engine Bkup Speed Sensor Error
KOMNET Datalink Timeout Error
Throttle Sensor Supply Voltage High Error
Throttle Sensor Power Supply Low Error
Supply Pump Pressure Very Low Error 2
Abnormality in IMV (IMA) Solenoid
Intake Heater Relay Disconnection Error
Intake Heater Relay Short Circuit Error
Backup Alarm/Lamp Relay 1 Circuit: Hot Short
ECSS Solenoid Relay: Hot Short
D1B0KA
HST Safety Relay: Disconnection
D1B0KB
HST Safety Relay: Ground Fault
D1B0KY
HST Safety Relay: Hot Short
D5ZHL6
IGN C System: Ground Fault/Disconnection
DAF3KK
UNSW Power Supply: Ground Fault/Disconnection
DAFRKR
Machine Monitor CAN-NET Signal: Disconnection
DAJ0KK
HST Controller Power Supply: Low Voltage
DAJ0KT
HST Controller Memory (EEPROM): Abnormality
DAJ1L4
HST Controller Main Power Line: Disconnection/Ground Fault
DAJ1L6
HST Controller Main Power Line: Hot Short
DAJ2KK
Controller Solenoid Power Supply: Low Voltage
DAJ2L3
HST Controller Load Power Supply Holding Line: Hot Short in Wiring Harness
DAJ2L4
HST Controller Load Power Supply Holding Line: Disconnection/Ground Fault
DAJ5KX
Sensor 5V Power Supply: Out-of-Output Range
DAJ9KQ
HST Controller Model Selection: Disagreement of Model Selection Signals
DAJRKR
HST Controller CAN-NET Signal: Disconnection
DAJRMA
HST Controller: Disagreement in Option Selection
DB2RKR
Engine Controller CAN-NET: Disconnection in Signal Line
DD1NL4
Fan Automatic Reverse Switch Signal: Abnormality
DD1NLD
Fan Reverse Switch Signal: Abnormality
DDB6KA
Parking Brake Reminder Signal: Disconnection/Short Circuit
DDB6KB
Parking Brake Indicator Signal: Ground Fault
DDB6KZ
Parking Brake Switch or Parking Brake Reminder Switch: Trouble
DDB6L0
Parking Brake Reminder Signal: Ground Fault
DDB6L4
Parking Brake Indicator Signal: Disconnection/Hot Short
DDD7KX
Travel Speed Control Dial Signal: Disconnection/Ground Fault
DDD7KY
Travel Speed Control Dial Signal: Hot Short
DDE5MA
Emergency Steering Operation Switch: Disconnection
DDK3KA
Directional Selector Switch: Disconnection/Hot Short
DDK3KB
Directional Selector Switch: Ground Fault
DDK6KA
FNR Lever: Disconnection/Ground Fault
DDK6KY
FNR Lever: Hot Short
DDS5L6
Steering: Low Oil Pressure (Operation of Emergency Steering)
DF10KA
Travel Speed Range Selector Switch: Disconnection/Ground Fault
DF10KB
Travel Speed Range Selector Switch: Hot Short
DGH1KX
HST Oil Temperature Sensor: Ground Fault
DGR2KB
Brake Oil Temperature Sensor: Ground Fault
DGR2KZ
Brake Oil Temperature Sensor: Disconnection/Hot Short
DHH1KX
HST Oil Pressure Sensor: Disconnection/Ground Fault
DHH1KY
HST Oil Pressure Sensor: Hot Short
DHTCL6
HST Filter Clogging Sensor: Functional Defect
DJF1KA
Fuel Level Sensor: Disconnection/Hot Short
DLT3KX
Travel Speed Sensor B: Abnormality
DLT4KX
Travel Speed Sensor A: Abnormality
DLT4LC
Travel Speed Sensor A & B: Abnormality
DV00KY
Alarm Buzzer: Hot Short
DW26KA
Motor 2 Solenoid: Disconnection/Ground Fault
DW26KY
Motor 2 Solenoid: Hot Short
DW7BKY
Fan Reverse Solenoid Circuit: Hot Short
DW7BKZ
Fan Reverse Solenoid Circuit: Disconnection/Ground Fault
DX16KA
Fan EPC Solenoid: Disconnection
DX16KB
Fan EPC Solenoid: Ground Fault
DX16KY
Fan EPC Solenoid: Hot Short
DX19KA
Motor 1 Solenoid: Disconnection
DX19KB
Motor 1 Solenoid: Ground Fault
DX19KY
Motor 1 Solenoid: Hot Short
DX20KA
Clutch EPC Solenoid: Disconnection
DX20KB
Clutch EPC Solenoid: Ground Fault
DX20KY
Clutch EPC Solenoid: Hot Short
DXH7KB
Reverse Solenoid: Ground Fault
DXH7KZ
Reverse Solenoid: Disconnection/Hot Short
DXH8KB
Forward Solenoid: Ground Fault
DXH8KZ
Forward Solenoid: Disconnection/Hot Short
Steering Pump: Overrun Alarm
HST Pump: Overrun Alarm
Motor 1: Overrun Alarm
TROUBLESHOOTING: E-MODE
Troubleshooting Electrical System
Information in Troubleshooting Table
Engine Does Not Start
Preheater Does Not Operate Manually
Travel Speed is Low or High
ECSS Does Not Operate
ECSS Keeps Operating
Defective Boom Kickout Function and Cancellation
Defective Bucket Positioner Function and Cancellation
Defective Lift Arm FLOATING Holding Function and Cancellation
Travel Direction Selection System Does Not Function
Fan Does Not Reverse
Fan Keeps Rotating in Reverse
Wiper Does Not Operate
Windshield Washer Does Not Operate
Headlamp, Clearance Lamp, and Tail Lamp Do Not Light Up or Go Off
Working Lamp Does Not Light Up or Go Off
Turn Signal Lamp and Hazard Lamp Do Not Light Up or Go Off
Brake Lamp Does Not Light or It Keeps Lighting Up
Backup Lamp Does Not Light or It Keeps Lighting Up
Backup Alarm Does Not Sound or It Keeps Sounding
Horn Does Not Sound or It Keeps Sounding
Alarm Buzzer Does Not Sound or It Keeps Sounding
Air Conditioner Does Not Operate or Stop
The KOMTRAX System Does Not Work Properly
Lamp Display Section of KOMTRAX Terminal
TROUBLESHOOTING: H-MODE
Troubleshooting Hydraulic and Mechanical Systems
Method of Using Troubleshooting Chart
Table of Failure Codes and Causes
Machine Does Not Start
Travel Speed Is Slow
Traction Force Is Weak
Engine Stalls When Traveling or Engine Speed Drops Excessively
Shift Range is Not Shifted
Steering Wheel Does Not Turn
Steering Wheel Is Heavy
Steering Wheel Shakes or Jerks
Machine Deviates Naturally to One Side When Traveling
Brake Does Not Work or Does Not Work Well
Brake Is Not Released or Is Dragged
Lift Arm Does Not Rise or Lower
Lift Arm Moves Slowly or Lift Arm Rising Force Is Insufficient
When Rising, Lift Arm Starts to Move Slowly at a Specific Height
Lift Arm Cylinder Cannot Hold Down The Bucket (Bucket Rises in the Air)
Hydraulic Drifts of the Lift Arm Occur Often
Lift Arm Wobbles During Operation
Bucket Does Not Tilt Back
Bucket Moves Slowly or Tilting-Back Force Is Insufficient
Bucket Starts to Operate Slowly in the Midst of Tilting Back
Bucket Cylinder Cannot Hold Down the Bucket
Hydraulic Drifts of the Bucket Occur Often
Bucket Wobbles During Travel with Load
Control Levers of Lift Arm and Bucket Do Not Move Smoothly and Are Heavy
ECSS Does Not Operate and Machine Pitches and Bounces
Fan Revolution Is Abnormal

DISASSEMBLY AND ASSEMBLY34 topics

Engine Front Oil Seal Assembly
Removal
Installation
Engine Rear Oil Seal Assembly
Cooling Fan and Fan Motor Assembly
Fuel Tank Assembly
POWER TRAIN
Transfer
Transfer Assembly
Disassembly
Assembly
Parking Brake Assembly
Front Axle Assembly
Rear Axle Assembly
Axle Housing Assembly
Differential Assembly
Center Hinge Pin
Counterweight
HST Pump and 4-Gear Pump Assembly
HST Pump Assembly
WASTE HANDLER GUARDS
Hydraulic Tank Guard
Rear Light Guards
Front Light Guards
Front Step
Axle Seal Guards
Boom Cylinder Hose Guards
Front Frame Underguard
Fuel Tank Guard
Rear Frame Underguard
WASTE HANDLER SCREENS
Lower Engine Baffle
Hood Screen
Exhaust Cover

Inside this manual

Real pages from this service manual (1,397 pages). Open the sample pages (PDF, 867 KB)

Sample pages from the Komatsu WA320-6 with SAA6D107E-1 Engine Wheel Loader Service Manual: Specifications, Troubleshooting, Diagram, Foldout diagram

Specifications, page 79: STRUCTURE, FUNCTION AND
Troubleshooting, page 751: KOMNET Datalink Timeout Error
Diagram, page 982: Possible
Foldout diagram, page 1,385: DIAGRAMS AND SCHEMATICS

This is a service manual

Here's how it compares to the other manual types.

This manual

Service manual

Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.

Operator's manual

Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.

Parts manual

Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.

Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.

What it's used for

Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.

Service shops and owner/operators who repair their own equipment

Identifying correct parts and seeing how assemblies come apart and go back together

Keeping equipment running with less downtime

Factory manual, 1,397 pages

Quantity one is the manual described above.

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Other editions and similar models

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