Classic 300 D & 300 G
Safety
Powered equipment
For Engine
Electric Magnetic Fields
Electric Shock can kill ARC Rays can burn
Fumes and Gases
Can be dangerous
Classic 300D & 300G
For Electrically
Cylinder may explode
Iii
Précautions DE Sûreté
Précautions DE Sûreté Pour
LES Machines À Souder À
Transformateur ET À
Electromagnetic Compatibility EMC
L10093 3-1-96H
Master Table of Contents for ALL Sections
Table of Contents Installation Section
Installation
Technical Specifications Classic 300D
Welding Output Open Circuit Output Range Auxiliary Power
Height Width Depth Weight
Optional Features
Design Features
Rated Output Duty Cycle
PRE-OPERATION Installation
PRE
Trailer
Diesel Fuel
Vehicle Mounting
Battery Charging
Engine BREAK-IN
To prevent Explosion when
To prevent Electrical Damage when
Table of Contents Operation Section
Operation
Engine Operation
See additional warning information at
Cold Weather Starting
Welder Operation
See Specifications for
Do not Turn the Current Range Selec
Auxiliary Power
B1.4
Table of Contents Accessories Section
Accessories
Optional Features
Maintenance section
TIG Options
Wire Feed Module K623-1 Provides constant volt
C1.3
Magnum 250 Innershield Gun for LN-23P
Spool GUN Welder
C1.4 Classic 300D & 300G
Table of Contents Maintenance Section
Maintenance
Maintenance
Idler Maintenance
Purging Air from Fuel System Perkins
Engine
Nameplates
D1.4
For Codes 10658 and below
D1.5
For Codes 10911 and Above
Resetting Procedure
D1.6
Figure D1.7 Major Component Location
D1.7
D1.8 Classic 300D & 300G
A2.1
Description Rated DC Output
Model Height Width Depth Weight
DC Current Range Volts @ Rated Amps Cycle
When starting and stopping welding or using auxil
A2.3
Engine
Muffler
Machine Grounding
Exhaust Spark Arrester
Lift Bail
Do not Mount Over Combustible SU
PRE-OPERATION Service
OIL
Fuel Polarity Control and Cable Sizes
Cooling System
Battery Charging
A2.6 Gases from Battery can explode
Battery Acid can burn eyes Skin
A2.6
B2.1
Maintenance sec
High Altitude Operation
Stopping the Engine
Starting the Classic 300D Perkins
Contacts and damage the switch
B2.3
Idler Operation Auxiliary Power
B2.4
C2.1
TIG Options General Options
Stick Options Accessory SET K704
Trailer K953-1
Wire Feed Module K623-1 Magnum Spool Gun K487-25
Wire Feeder Options
C2.3
C2.4 Classic 300D & 300G
D2.1
Safety Precautions
Information at
Idler Maintenance
Purging AIR from Fuel System
Perkins 404C-22 Engine
Nameplates
Service Decal for Codes 11249 and below
D2.4
Tension of alternator drive belt
All nuts and bolts for tightness
Service Decal for Codes 11250 and Above
MAINTENANCED2.5
D2.5
D2.6MAINTENANCED2.6
Gfci Receptacle Testing and Reset Ting Procedure
Case Front Assembly
D2.7
D2.8 Classic 300D & 300G
A3.1
Technical Specifications Classic 300D Kubota
A3.2
Control Panel High Idle RPM OCV Adjustment
A3.3
This operatorʼs manual
Angle of Operation
Not Mount Over Combustible Surfaces
Falling
Polarity Control and Cable Sizes Fuel
GAS ES from Battery can explode
Battery Charging Warning
A3.6
B3.1
Starting the Classic 300D Kubota V2203M
Diesel Engine
B3.3
Control of Welding Current
B3.4
Idler Operation
C3.1
TIG Options
Stick Options
Wire Feed Options
C3.3
C3.4 Classic 300D & 300G
D3.1
D3.2
Kubota V2203M Engine
D3.3
Air Bleeding
Valve
Engine Service
D3.4
D3.5MAINTENANCED3.5
Figure D3.6 Major Component Location
D3.6
A4.1
A4.2
General Description
A4.3
See Optional Features
A4.4
Read the engine operating and maintenance
A4.5
Instructions supplied with this machine
Can
A4.6
B4.1
B4.2
404D-22 Diesel Engine
Selector setting and lower open circuit voltage
B4.3
B4.4
C4.1
Power Plug Kit K802D
Service Indicator Kit K1858-1 Water Valve Kit K844-1
C4.2
Ball Hitch K958-1 K958-2 Control Cable Extension K937-45
Magnum Spool Gun K487-25 Wire Feed Module K623-1
C4.3
C4.4 Classic 300D & 300G
D4.1
D4.2
Perkins 404D-22 Engine
D4.3
MAINTENANCED4.4
D4.4
D4.5MAINTENANCED4.5
Figure D4.6 Major Component Location
D4.6
A5.1
A5.2
Technical Specifications Classic 300G K1754-1
Description Rated DC Output Duty Cycle DC Current Range
Exhaust Spark Arrester Lift Bail
Do not Mount Over Combustible SUR
Gasoline
Vehicle Mounting
A5.5
A5.6 Classic 300D & 300G
B5.1
Design Features
Starting and stopping welding or using auxiliary
B5.2
Do not Mount Over Combustible Surfaces
High Idle RPM OCV Adjustment- a potentiometer is
B5.3
Refer to the Engine
Starting the Classic 300G GM 3.0L
Throttle Body Deicing System
B5.4
Idler Control Operation
C5.1
Optional Equipment
C5.2
D5.1
Commutator and Brushes
Bearings
General Instructions
Idler Control Maintenance
Engine Maintenance
Purging AIR from Fuel System GM
0L Engine
Engine Service
D5.4
Figure D5.5 Major Component Location
D5.5
D5.6 Classic 300D & 300G
1TABLE of CONTENTS-THEORY of Operation Section E-1
Theory of Operation
Gasoline Engine
Perkins
BATTERY, STARTER, Engine Alternator & Protection Circuits
Classic 300G, Zenith Fuel System/GM Engine
Classic 300D, Perkins Engine
Classic 300D, Kubota Engine
Fine Current Adjustment
Adjustment Coils
TOR and Rotor
Excitation Flashing
Figure E.8 Classic 300D, Perkins Engine
11472,
Engine Idler Circuit
11135 10657, 10658, 10911,
Theory of Operation
DC Generator Machines
Classic 300D & 300G
Troubleshooting and Repair
Table of Contents
HOW to USE Troubleshooting Guide
Locate Problem Symptom
Recommended
Perform External Tests
PC Board Troubleshooting Procedures
Electric Shock
Adjustment Test
Ring Service Procedure
Perform the Brush and Slip
Perform the Flash Voltage
Service Procedure
Generator Brush
Commutator Inspection
Shunt Field Coil
Output takes a long time to
Weld output is considerably
Adjustment Procedure if
Rocker Adjustment
Perform the Shunt Field Coil
RPM Adjustment Test
Slip Ring Service
Procedure
Exciter Rotor Resistance and Ground Test Shunt Field Coil
Welding
Brush and Slip
Flash Voltage
Engine will not crank when
Function Problems
System Voltage Tests
Verify that the engine control
Protection System Test
Perform the Engine Alternator
Machine will not idle down
Kubota powered units
For Classic 300G
Engine goes to low idle, but
Kubota powered Classic
Perkins powered models
Classic 300G Classic 300D Kubota Powered machines
Troubleshooting and Repair
23TROUBLESHOOTING and REPAIRF-23
Brush & Slip Ring Service Procedure
Exciter/Auxiliary Power Alternator
Procedure Description
24TROUBLESHOOTING and REPAIRF-24
Procedure
Cleaning the Slip Rings
Seating Brushes
Engine Alternator Test Procedure
25TROUBLESHOOTING and REPAIRF-25
Test Description
Engine Alternator Test Procedure
27TROUBLESHOOTING and REPAIRF-27
Engine Fuel System Voltage Test Procedure
Engine Fuel System Voltage Test Procedure
29TROUBLESHOOTING and REPAIRF-29
Engine Protection System Test Procedure
Engine Protection System Test Procedure
Warranty will not Cover the Damage
TED to RUN White Overheated or with
TOW OIL PRESSURE, Severe Engine DAM
Engine RPM Adjustment Test Procedure
31TROUBLESHOOTING and REPAIRF-31
Materials Needed Miscellaneous hand tools Strobe tachometer
Engine RPM Adjustment Test Procedure
Engine RPM Adjustment Procedure later in this section
Classic 300D Perkins only
Strobe-Tach Method
Low idle adjustment
Classic 300D & 300G
35TROUBLESHOOTING and REPAIRF-35
Flashing Voltage Test Procedure
Flashing Voltage Test Procedure
Rocker Adjustment Procedure
38TROUBLESHOOTING and REPAIRF-38
Rocker Adjustment Procedure
Initial rocker placement
Tighten
Check for Max output
Classic 300D & 300G
Exciter Rotor Resistance and Ground Tests Procedure
41TROUBLESHOOTING and REPAIRF-41
Exciter / Auxiliary Power Alternator
Static Tests
42TROUBLESHOOTING and REPAIRF-42
Dynamic Tests
43TROUBLESHOOTING and REPAIRF-43
Classic 300D & 300G
45TROUBLESHOOTING and REPAIRF-45
Shunt Field Coil Resistance and Ground Test Procedure
Shunt Field Coil Resistance and Ground Test
Shunt coil ground test
Test the shunt coil resistance
Shunt Field Coil Resistance and Ground
47TROUBLESHOOTING and REPAIRF-47
Shunt Field Circuit Voltage Test Procedure
Shunt Field Circuit Voltage Test Procedure
49TROUBLESHOOTING and REPAIRF-49
Exciter Stator Short Circuit & Ground Test Procedure
Exciter Stator Short Circuit & Ground Test Procedure
Weld Circuit Ground and Short Circuit Test Procedure
Weld circuit ground test
If the resistance is lower than 500k Ohms
53TROUBLESHOOTING and REPAIRF-53
54TROUBLESHOOTING and REPAIRF-54
Inspection and Service Procedure
Welding Generator Brush and Commutator
Perform the Weld Circuit Ground and Short Circuit Test
55TROUBLESHOOTING and REPAIRF-55
Pitted and Are Damaged Commutator
Uneven Commutator appearance
Examine the brushes
Classic 300D & 300G
57TROUBLESHOOTING and REPAIRF-57
Series Coil Short Circuit Test Procedure
Series Coil Short Circuit Test Procedure
Scope Settings
High Idle no Load Fine Current Control Rheostat AT Maximum
16.6 ms
CH1
60TROUBLESHOOTING and REPAIRF-60
Normal Open Circuit DC Weld Voltage Waveform
Machine Loaded Selector Switch AT Maximum Position
61TROUBLESHOOTING and REPAIRF-61
Typical DC Weld Output Voltage Waveform
Classic 300D & 300G
63TROUBLESHOOTING and REPAIRF-63
Alternator Rotor Removal Replacement Procedure
Description
Materials Needed 3/8 wrench
Replacement Procedure
64TROUBLESHOOTING and REPAIRF-64
Alternator Rotor Removal
Troubleshooting and Repair
66TROUBLESHOOTING and REPAIRF-66
Figure F.6 Rotor Removal
Replacement Procedure
Replacement
Classic 300D & 300G
Alternator Stator Removal and Replacement Procedure
69TROUBLESHOOTING and REPAIRF-69
Materials Needed 3/8 nut driver
70TROUBLESHOOTING and REPAIRF-70
Alternator Stator Removal and Replacement
Procedure
Perform the Alternator Rotor Removal
71TROUBLESHOOTING and REPAIRF-71
Figure F.8 Lead Disconnection Points
Replacement
Genernator Brush HOLDER/COIL Cables
73TROUBLESHOOTING and REPAIRF-73
Rotor Removal and Replacement pro
Classic 300D & 300G
75TROUBLESHOOTING and REPAIRF-75
Generator Frame Removal and Replacement Procedure
76TROUBLESHOOTING and REPAIRF-76
Removal and Replacement
Generator Frame
Perform the Alternator Stator Removal
Removal and Replacement
78TROUBLESHOOTING and REPAIRF-78
See Figure F.14 for steps 14
79TROUBLESHOOTING and REPAIRF-79
Rope Sling
80TROUBLESHOOTING and REPAIRF-80
81TROUBLESHOOTING and REPAIRF-81
Generator Armature Removal and Replacement Procedure
Removal and Replacement Procedure
82TROUBLESHOOTING and REPAIRF-82
Generator Armature
Current Rheostat at Maximum
AC Auxiliary Power Receptacle Output
RPM
Classic 300D & 300G
Table of Contents Diagram Section
Electrical Diagrams
Wiring Diagram Codes 10545, 10546, 10657, 10658 L10877
Classic 300G Wiring Diagram
Classic 300D Wiring Diagram
Wiring Diagram Codes 10911, 10927 L11865
Classic 300G Wiring Diagram
Wiring Diagram Codes 10912, 11135 L11866
Classic 300D Perkins Wiring Diagram
Wiring Diagram Codes 11110, 11111 M20499
Classic 300D Kubota Wiring Diagram
Wiring Diagram Codes 11112, 11113 M20432
Wiring Diagram Codes 11243, 11244 M20432-1
OU Tput Terminals
Wiring Diagram Codes 11248, 11249, 11280, 11281 M20616
Wiring Diagram Codes 11411, 11412 M21292
Wiring Diagram Codes 11413, 11414 M21293
Wiring Diagram Codes 11472, 11473 M21684
Wiring Diagram Codes 11474, 11475 M21563
To Iron
Schematic Complete Machine Codes 11110, 11111 L12412
L12412
Schematic Complete Machine Codes 11112, 11113 L12265
L12265
Schematic Complete Machine Codes 11243, 11244 L12265-1
L12265-1
L12561
Lower Left Machine
Schematic Complete Machine Codes 11411, 11412 L13096
L13096
Schematic Complete Machine Codes 11413, 11414 L13097
L13097
Schematic Complete Machine Codes 11472, 11473 L13672
L13672
Schematic Complete Machine Codes 11474, 11475 L13351
L13351
Wire Feed Module Wiring Diagram
Wiring Diagram Wire Feed Module Option L9259
Schematic Wire Feed Module Option G2562
Classic 300D & 300G
Electrical Diagrams
Schematic Current Sensor PC BD Kubota Engine only S25973