Komatsu Welding I Shop Manual SEBF14001

Description

• Model List:
  • Welding I

• 1. WELDING I
• 1.1. CONTENTS
• 1.1.1. GENERAL INSTRUCTIONS
• 1.1.1.1. General description of welding techniques
• 1.1.1.2. Features of welding methods
• 1.1.1.3. Selecting welding methods
• 1.1.1.4. Preparation for welding
• 1.1.1.5. Welding techniques
• 1.1.1.6. Weld defects and countermeasures
• 1.1.1.7. How to distinguish materials and how to check welded areas
• 1.1.1.8. How to read welding symbols
• 1.1.1.9. How to handle gas (oxyacetylene) welders and cutters
• 1.1.1.10. Preventing accidents
• 1.1.1.11. Cost of welding consumables
• 1.1.1.12. Examples of troubles in welded structures and countermeasures
• 1.1.1.13. List of standards of welding rods by countries
• 1.1.1.14. List of standards of metal materials by countries
• 1.1.1.15. Melting temperatures of various base metals and alloys
• 1.1.1.16. Conversion table
• 1.1.1.17. Names of standards in various countries
• 1.1.1.18. A guide to welding terms
• 1.1.2. BASIC WELDING
• 1.1.2.1. Items required for welding repairs
• 1.1.2.2. Procedure for checking for cracks
• 1.1.2.3. Preparation of edges by gouging
• 1.1.2.4. Welding procedure
• 1.1.2.5. Finishing procedure with a grinder
• 1.1.2.6. Peening procedure
• 1.1.2.7. Weldability of steel materials
• 1.1.2.8. Sections to be repaired by welding and selection of welding rods
• 1.1.2.9. List of major materials of bulldozers
• 1.1.2.10. Points for ensuring quality after welding
• 1.1.3. HARDFACING OF WEAR PARTS
• 1.1.3.1. Hard facing
• 1.1.3.2. Types of metal wear
• 1.1.3.3. Build up welding procedure
• 1.1.3.4. General precautions for build up welding
• 1.1.3.5. Examples of hard facing
• 1.1.4. REPAIR OF RADIATOR AND OIL COOLER
• 1.1.4.1. Procedure for repairing leakage of water from radiator core
• 1.1.4.2. Applicable range
• 1.1.4.3. Action to take when water starts leaking
• 1.1.4.4. Confirming location of water leakage
• 1.1.4.5. Factors causing water leakage
• 1.1.4.6. Removal
• 1.1.4.7. Disassembly
• 1.1.4.8. Repair tools and equipment
• 1.1.4.9. Repair procedure
• 1.1.4.10. Checking results
• 1.1.4.11. Assembly of core assembly
• 1.1.4.12. Pressurinzing check
• 1.1.4.13. Reassembly
• 1.1.5. REPAIR OF BULLDOZERS AND DOZER SHOVELS BY WELDING
• 1.1.5.1. MAIN FRAME(Example of D455A)
• 1.1.5.2. TRACK FRAME(Example of D455A)
• 1.1.5.3. BLADE
• 1.1.5.3.1. Type and uses of blades
• 1.1.5.3.2. Preventing wear of blades
• 1.1.5.3.3. Scheduled repair of blades
• 1.1.5.3.4. Repair and rebuilding of blades
• 1.1.5.4. BUCKET
• 1.1.5.4.1. Types and uses of buckets
• 1.1.5.4.2. Repair and rebuilding of buckets
• 1.1.5.4.3. Replacing a bucket edge
• 1.1.5.5. RIPPER ADAPTER SHANK
• 1.1.6. REPAIR OF DUMP TRUCKS BY WELDING
• 1.1.6.1. MAIN FRAME(Example of HD3202 and HD3252)
• 2. WELDING II
• 2.1. CONTENTS
• 2.1.1. SAFETY IN OPERATIONS
• 2.1.1.1. Safety in operations
• 2.1.2. WELDING EQUIPMENT AND BASIC WELDING TECHNICS
• 2.1.2.1. Purchassing priorities
• 2.1.2.2. Welding equipment groups
• 2.1.2.3. Arg air gouging
• 2.1.2.4. Vertical welding rod and uranami welding electrode
• 2.1.2.5. Comparison of CO2 semiautomatic welding and manual welding
• 2.1.2.6. Equipment part numbers
• 2.1.2.7. Gas cutting
• 2.1.2.8. Flat welding
• 2.1.2.9. Vertical welding
• 2.1.2.10. Procedure for checking for cracks
• 2.1.2.11. Welding procedure
• 2.1.2.12. Gas cutting work
• 2.1.2.13. CO2 gas shielded semiautomatic arc welding
• 2.1.2.14. Penetration welding
• 2.1.2.15. Finishing procedure with a grinder
• 2.1.3. WELDING DEFECTS
• 2.1.3.1. Defectives shape of bead
• 2.1.3.2. Lack of penetration
• 2.1.3.3. Welding blow through
• 2.1.3.4. Standard edge preparation
• 2.1.3.5. Strength of butt welding
• 2.1.3.6. Cracks
• 2.1.4. WELDING REPAIR
• 2.1.4.1. Basic flowchart for welding cracks
• 2.1.4.2. General precautions for welding repair work(summary)
• 2.1.4.3. Check points for welding repair
• 2.1.4.4. Selection of welding rods
• 2.1.4.5. Preheating,postheating
• 2.1.4.6. List of materials
• 2.1.4.7. Welding repair method for different structures
• 2.1.4.8. Reinforcement plate
• 2.1.4.9. Gouging
• 2.1.4.10. Method of inserting back plate in box frame
• 2.1.4.11. Results of bending fatigue test on box frame
• 2.1.4.12. Way of bending or setting reinforcement plate
• 2.1.4.13. Track welding
• 2.1.5. COLLECTION OF EXAMPLES
• 2.1.5.1. Bulldozers
• 2.1.5.2. Hydraulic excavators(Backhoe specification)
• 2.1.5.3. Hydraulic excavators(Loading shovel specification)
• 2.1.5.4. Dump trucks
• 2.1.5.5. Wheel loadors
• 2.1.5.6. Motor graders
• 2.1.5.7. Bulldozers
• 2.1.5.8. Hydraulic excavators(Loading shovel specification)
• 2.1.5.9. Dump trucks
• 2.1.5.10. Wheel loaders
• 2.1.5.11. Motor graders