Sunday, July 29, 2012

REUSEABLE PARTS OF CRANKSHAFT AND BEARING














INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
FAILURE SIGNS, THEIR CAUSES AND DIAGNOSIS
FOR REUSAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
• Inspection points for parts reusage diagnosis
• Standards for failure determination
TYPICAL EXAMPLES OF FAILURES . . . . . . . . . . . . . . . . . . . 20
• Crankshaft
• Main and connecting rod bearings
FAILURES AND THEIR CAUSES . . . . . . . . . . . . . . . . . . . . . . 30
• Air intake
• Lubricating oil
• Operation technique
PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . 31
CONSTRUCTION AND FUNCTION . . . . . . . . . . . . . . . . . . . . . 32
• Crankshaft
• Main and connecting rod
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Saturday, July 28, 2012

SHOP MANNUAL for WA 320-3 KOMATSU LOADER














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Diesel Emisssion



Part I Operational Issues
Tools 2.
Best Practices 3.
Proactive Attitudes 5.
Typical Exhaust Gas Components
Carbon Dioxide 7.
Carbon Monoxide 7.
Oxides of Nitrogen 7.
Hydrocarbons 7.
Particulate Matter 7.
Oxides of Sulfur 7.
Smoke 8.
Engine Systems and Conditions
That Affect Diesel Emissions
Combustion Chamber Design 9.
Intake Manifold System 10.
Operating Conditions 11.
Low Turbocharger Boost Pressure 11.
High Exhaust Backpressure 12.
High Crankcase Pressure 13.
Part II Overview of Six Engine Systems
Introduction 14.
1. Intake System
Introduction 15.
Dry Type Air Cleaners 16.
Air Induction Cooling 16.
Aftercoolers 16.
Air-to-Air Aftercoolers 17.
Water Aftercoolers 17.
Intake System Recommendations 17.
Servicing the Intake System 18.
Job Aid Checklist (Intake System) 19.
2. Exhaust System
Introduction 20.
Exhaust System Recommendations 21.
Exhaust After Treatment System Maintenance 21.
Job Aid Checklist (Exhaust System) 23.
Introduction to Tools used for Exhaust System Analysis
ECOM AC+ Gas Analyser 24.
UGAS Software Application 25.
Testing Protocol 25.
Pre-test Conditions 26.
Emissions Testing Protocol 26.
Basic Emission Equipment Operation
Undiluted Diesel Particulate Measurement 27.
Measurement Interpretation 28.
Analysis of Particulate Samples 28.
Thermal Optical Method 29.
Job Aid Checklist 30.
ECOM AC+ Gas Analyser 30.
Particulate Sampling - Gilian Pump 30.
Intake Testing 31.
Intake Restrictions and Exhaust Backpressure 32.
3. Fuel Injection System
Introduction 33.
Injection Pump or Injector Failure 33.
Inadequate Fuel Supply 34.
Incorrect Injection Pump or Injector Timing 34.
Advanced Timing 34.
Retarded Timing 34.
Fuel System Types 35.
Individual Unit Jerk Pumps 35.
Inline Pump System 36.
Distributor Pump System 37.
Cummins PT Fuel System 37.
Unit Injectors 38.
Electronically controlled Fuel Injection Systems 38.
Fuel Injection System Recommendations 39.
Job Aid Checklist (Fuel System) 40.
4. Cooling Systems
Cooling System Recommendations 41.
Cooling System Maintenance 42.
Cooling Mixture 42.
Conditioner and Inhibitors 42.
Cleaning and Flushing 43.
Troubleshooting 43.
Thermostats 43.
Aeration in Coolant 43.
Radiator Cap Relief Valve 44.
Temperature Probe (Cooling System) 44.
Job Aid Checklist (Cooling System) 45.
5. Diesel Fuel and Fuel Supply Systems
Introduction 46.
Best Practice Recommendations 46.
Sulfur Content 47.
Cetane Number 47.
Viscosity 47.
Flashpoint 47.
Fuel Quality and Handling Recommendations 48.
6. Lubrication
Lubrication Recommendations 49.
Lubrication Classification 50.
Combined Service Application 51.
Lubrication System Checks 51.
Conclusion 52.


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Tuesday, July 24, 2012

Crankshaft Grinding and Polishing



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Visual Inspection of Crankshafts



Engine overhaul repair လုပ္ျပီဆိုရင္ အင္ဂ်င္အစိတ္အပိုင္းေတြကို အေသးစိတ္ တိုင္းတာစစ္ေဆးရပါတယ္ အဲထဲမွာ crankshaft inspection ဟာလဲ အဓိက က်ပါတယ္။ ဒီထဲမွာ မ်က္ျမင္စစ္ေဆးျခင္း(visual inspection) အခ်က္အလက္ေတြပါ ပါတယ္ ။ေနာက္တခါ တိုင္းထြာစစ္ေဆးျခင္း (dimensional inspection) ထပ္တင္ပါဦးမယ္။ အိုေက

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Monday, July 23, 2012

FUEL INJECTION PUMP




INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
FAILURE SIGNS AND DIAGNOSIS FOR REUSE . . . . . . . . . . . 2
• Inspection Points for Parts Reuse Diagnosis
• Standards for Failure Determination
• Standard for Reuse of Injection Pumps Parts
EXAMPLES OF FAILURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
CONSTRUCTION & FUNCTION OF FUEL
INJECTION PUMPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
• Types of Injection Pumps
• Construction of Injection Pumps
• Types of Governors
• Construction of Governors
FAILURES AND THEIR CAUSES . . . . . . . . . . . . . . . . . . . . . . 31
• Fuel
• Dust and Water
• Adjustments
PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . 32



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The Structure and Function of Hydraulic Gear Pumps


INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
FAILURE SIGNS AND DIAGNOSIS FOR REUSE . . . . . . . . . . . 2
• Inspection Points for Parts Reuse Diagnosis
• Standards for Failure Determination
• Standards for Reuse of Hydraulic Gear Pump Parts
EXAMPLES OF FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
• Gear Cases
• Brackets and Housings
• Gears
• Splines
• Needle Bearings
• Plain Bearings
• Bushings
• Side Plates
• Pump Case Bracket
STRUCTURE AND FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . 28
• Functions
• Types of Komatsu Standard Pumps
• Structure of Komatsu Standard Pumps
FAILURES AND THEIR CAUSES . . . . . . . . . . . . . . . . . . . . . . 35
PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . 36
• Prevention of Recurrence
• Precautions for Assembling a Pump




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Guidance for reuseable parts of Gear (or) Gear inspection



INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
GEAR FAILURE SIGNS, AND DIAGNOSIS
FOR REUSAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
• Standards for reusage according to the failure signs
• Standards for failure determination
ANALYZING GEAR FAILURES . . . . . . . . . . . . . . . . . . . . . . . . 16
• Causes underlying to gear failures
• Gear failure signs and their causes
ESSENTIAL GEAR INFORMATION. . . . . . . . . . . . . . . . . . . . . 26
• Different types of gears
• Gear nomenclature
• Involute gears
• Cutting gear teeth
• Gear blank material
• Gear lubrication
PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . 37


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Power Electronic Handbook

 

Power Electronic Handbook

  download Link:   Mediafire

Thursday, July 19, 2012

The Structure and Function of PT Pump


ဒီစာအုပ္ထဲမွာ Cumminns Engines ေတြမွာသံုးတဲ့ PT pump ရဲ႕ အေျခခံတည္ေဆာက္ထားပံုနဲ႕ လုပ္ငန္းေဆာင္ရြက္မွု အေျခအေနေတြကို ေဖာ္ျပထားပါတယ္။

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Wednesday, July 18, 2012

Tyre inspection




Introduction ......................................... 3
1. Classification ................................... 4
2. Effective Tyre Use ............................ 9
3. Proper Tyre Selection ........................ 10
4. Proper Tyre use ................................ 11
5. Tyre Maintenance .............................. 25
6. Others ........................................ 34



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Tuesday, July 17, 2012

Guidance for reuseable parts of Turbocharger

            



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engineering measurement error

  Engineering Measurement Method & Intrinsic Error

အင္ဂ်င္နီယာလုပ္ငန္းခြင္နယ္ပယ္ၾကီးမွာ တိုင္းထြာစစ္ေဆးစမ္းသပ္ ရတာေတြ ရွိပါတယ္။ ဘာလုပ္ငန္းပဲ လုပ္လုပ္ အမွား ေတြပါလာႏိုင္သလိုတိုင္းထြာစစ္ေဆးရာမွာ လည္းအမွားေတြပါလာႏိုင္ပါတယ္။ ဒါဆို အင္ဂ်င္နီယာ တစ္ေယာက္ ဟာ တိုင္းထြာစစ္ေဆးနည္းစနစ္မ်ားကို နားလည္ထားသင့္သလို ကိုယ္တိုင္ တိုင္းထြာစစ္ေဆးလိုက္တဲ့ အခ်က္အလက္ ေတြရဲ႕မွားယြင္းႏိုင္ေခ်မ်ားကိုလည္းနားလည္သိရွိထားဖို႕လိုအပ္လာပါတယ္။error ေတြထဲမွာေတာ့အသိမွားအျမင္မွား(systematic  error)ဟာ အဆိုးဆံုးျဖစ္ျပီး ျပင္ရတာလဲခက္တယ္လို႕ၾကားဖူးပါတယ္။ဒါဆို high precision measurement ေတြေဆာင္ရြက္တဲ့အခါ error ေတြေရွာင္ကြင္းႏိုင္ဖို႔ နဲ႕ acceptable data ေတြရရွိႏိုင္ဖို႔ ၊ Measurement method ေတြေလ့လာဖို႔ ဆိုရင္ ေအာက္က link မွာ ေဒါင္းပီး Engineering Measurement Method & Intrinsic Error စာအုပ္ကိုေလ့လာၾကည့္သင့္ပါတယ္ခင္ဗ်ား
download link: Mediafire

Sunday, July 15, 2012

Mechanical Engineering Handbook



စက္ျပင္ လုပ္ငန္းခြင္ေတြထဲမွာ အလုပ္လုပ္ရင္း အကိုးအကားစာအုပ္ေတြလိုအပ္လာတတ္ပါတယ္ တခ်ိဳ႕ သီအိုရီပိုင္းေတြလဲျပန္ဖတ္ရတတ္ပါတယ္ ဒါမ်ိဳးၾကံဳလာရင္ ေတာ့ ဒီ Handbook က ေတာ့အမွန္အသံုး၀င္ပါတယ္ ဒီထဲမွာ Fluid , thermodynamic, mechanic theory,strength ,Design,metarial,manufacture စတာေတြ စံုစံုလင္လင္ကိုပါ ပါတယ္ Electrical ,environmental engineering ေတြေတာင္ပါလိုက္ေသးတယ္...စာအုပ္ေတြပဲ ဖတ္ေနရင္ လက္ေတြ႔မွာဘာမွ အသံုးမ၀င္ဘူးလို႔ လဲတခ်ိဳ႕ကေျပာတတ္ပါတယ္ ။ ဒါမ်ိဳးတယူသန္ေနရင္းလည္းမျဖစ္ေသးပါဘူး ဒါဆို ကြ်န္ေတာ္ကေတာ့ မိုးကုတ္ဆရာေတာ္ၾကီးေျပာတဲ့ စကားတခြန္းကိုျပန္ေျပာခ်င္ပါတယ္။ စာေတြ႔ ဆိုတာ လက္ေတြ႕မ်ားကိုမွတ္တမ္းတင္ထားတာပါတဲ့ ။ ကဲ ဒါဆို အရမ္းေကာင္းတဲ့ ဒီ mechanical engineering handbook ကို လိုခ်င္ရင္ ေအာက္က Link မွာသြားေဒါင္းပီး လိုအပ္ရင္ရင္ထုတ္သံုးလိုက္ေပါ့ဗ်ာ။



Saturday, July 14, 2012

Machinery's hand book



စက္ျပင္အလုပ္ရံုေတြမွာ repair လုပ္ငန္းေတြအဆင္ေျပေျပေဆာင္ရြက္ႏုိင္ဖို႔နဲ႔ စက္အရန္ပစၥည္းမ်ားထိုက္သင့္သလို ထုတ္လုပ္ႏိုင္ဖို႔အတြက္ Machine shop ဆိုတာရွိပါတယ္။ အဲဒီ Machine shop တစ္ခုမွာ ရွိတဲ့ စက္မ်ား ဥပမာ lathe, drilling machine, milling machine စသည့္စက္မ်ားႏွင့္ ယင္းတို႔နဲ႕ဆက္စက္ပစၥည္းမ်ား အေၾကာင္းေရးထားတဲ့စာအုပ္ေကာင္းေလးတစ္ခုပါ ။စိတ္၀င္စားရင္ ေအာက္က link မွာ ေဒါင္းျပီးေလ့လာႏိုင္ပါတယ္။

Mediafire

Friday, July 13, 2012

Undercarriage




စက္ယာဥ္ယႏၱရားမ်ားျပင္ဆင္တဲ့ အခါ undercarriage ပိုင္းေတြျဖစ္တဲ့ chain link, Trackshoe, Trackroller,carrier roller ,pin & bush  အစရွိတဲ့ အစိတ္အပိုင္းေတြရဲ့ အေျခခံအခ်က္အလက္ေတြကို သိရွိထားဖို႔လိုအပ္ပါတယ္ ဒါကေတာ့ Undercarriage ပိုင္းအေျခခံေတြ ေရးထားတဲ့ စာအုပ္ပါ စိတ္၀င္းစားရင္ ေအာက္က link မွာေဒါင္းပီးေလ့လာနိုင္ပါတယ္။


Mediafire

Thursday, July 12, 2012

Welding Safety


ကြ်န္ေတာ္တို႔စက္ျပင္လုပ္ငန္းခြင္ေတြမွာ safety ဟာ ဘယ္ရွုေထာင့္ကပဲၾကည့္ၾကည့္အေရးပါ ပါတယ္။ ဒါေပမယ့္ဗ်ာ ကြ်န္ေတာ္တို႔ လုပ္ကိုင္ေနရတဲ့ လုပ္ငန္းခြင္မွာေတာ့ အားနညး္ခ်က္ေတြကေတာ့ ရွိေနဆဲပါပဲ၊ဘာပဲျဖစ္ျဖစ္ေပါ့ဗ်ာ   welding saftey နဲ့ပက္သက္တဲ့ အခ်က္အလက္ေတြကို ေလ့လာခ်င္ရင္ေတာ့ေအာက္က Link မွာ ေဒါင္းပီးေလ့လာၾကည္႔ပါ။


Wednesday, July 11, 2012

Service equipment catalog


ဒါကေတာ့ စက္ျပင္အလုပ္ရံုေတြမွာရွိတဲ့ ေလ့လာသင့္တဲ့  hand tools ေတြစက္ပစၥည္းေတြေပါ့ service equipment catalog တစ္ခု ပါေလ့လာရင္ ထိုက္သင့္သေလာက္ေတာ့ အက်ိဳးရွိမယ္လို႔ထင္ပါတယ္ စိတ္၀င္စားရင္ ဒီမွာ ေဒါင္းျပီး ေလ့လာၾကည့္ပါ။

Tuesday, July 10, 2012

ရည္ရြယ္ခ်က္

www.kotinminhtoo.blogspot.com

ဒီ Blog ကို ေရးရျခင္းရည္ရြယ္ခ်က္ကေတာ့ ေက်ာင္းဆင္းျပီး လုပ္ငန္းခြင္ ၀င္စ မွတ္သားထား၊စုေဆာင္းထားခဲ့တဲ့ စက္ျပင္လုပ္ငန္းဆိုင္ရာမွတ္စုမ်ား၊စာအုပ္မ်ားကို ၀ါသနာတူ ညီအကိုေမာင္ႏွမမ်ား ထိုက္သင့္သလို ေလ့လာႏိုင္ျပီး ၊အေတြ႔အၾကံဳမ်ားဖလွယ္ရင္း အသိပညာမ်ား တိုးပြားလာေစႏိုင္ရန္ ျဖစ္ပါတယ္။