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Komatsu Cummins N855-C, NT855-C, NTA855-C, N-855 Series Diesel Engine Shop Manual – PDF DOWNLOAD
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KomatsuCummins N855-C, NT855-C, NTA855-C, N-855 Series Diesel Engine Shop Manual
Book Code: SEBE6710A03
SERIAL NUMBER:
N-855-C P0300-1
PC300-2
PC300LC-1
PC300LC-2
NT-855-C 080A,E-1 8
085A.E.P-18
080F-1 8
0958-2
PC400-1
PC4OOLC-1
W1 70-2
W1 80-1
NTA-855-C H0320-2
H0320-3
WS168-2
W823-1
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Description
Komatsu Cummins N855-C, NT855-C, NTA855-C, N-855 Series Diesel Engine Shop Manual
FILE DETAILS:
Komatsu Cummins N855-C, NT855-C, NTA855-C, N-855 Series Diesel Engine Shop Manual
Brands: Komatsu/Cummins
Equipment Type: Diesel Engine
Manuals Type: Shop Manual
Machine Model: N855-C, NT855-C, NTA855-C, N855 Series Diesel Engine
Serial Number: 26100001 and up
Book Code: SEBE6710A03
Language: English
Pages: 279
KOMATSU CUMMINS N855-C, NT855-C, NTA855-C, N-855 SERIES DIESEL ENGINE SHOP MANUAL – PDF DOWNLOAD:
IMAGES PREVIEW OF THE MANUAL:
DESCRIPTION:
Komatsu Cummins N855-C, NT855-C, NTA855-C, N-855 Series Diesel Engine Shop Manual
FOREWORD:
GENERAL:
- This shop manual has been prepared as an aid to improve the quality of repairs by giving the servicemen an accurate understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure you understand the contents of this manual and use it to full effect at every opportunity.
- This shop manual mainly contains the necessary technical information for operations performed in a service workshop. For ease of understanding, the manual is divided into the following chapters; these chapters are further divided into the each main group of components.
STRUCTURE AND FUNCTION:
This section explains the structure and function of each component. It serves not only to give an understanding of the structure, but also serves as reference material for troubleshooting.
TESTING AND ADJUSTING:
This section explains checks to be made before and after performing repairs, as well as adjustments to be made at completion of the checks and repairs. Troubleshooting charts correlating “Problems” to “Causes” are also included in thissection.
DISASSEMBLY AND ASSEMBLY:
This section explains the order to be followed when removing, installing, disassembling or assembling each component, as well as precautions to be taken for these operations.
MAINTENANCE STANDARD :
This section gives the judgement standards when inspecting disassembled parts.
TABLE OF CONTENTS:
Komatsu Cummins N855-C, NT855-C, NTA855-C, N-855 Series Diesel Engine Shop Manual
COVER.............................................................. 1 CONTENTS........................................................... 2 01 GENERAL......................................................... 35 CONTENTS....................................................... 36 GENERAL VIEW............................................... 37 SPECIFICATIONS............................................. 40 ASSEMBLY DRAWING........................................... 44 PERFORMANCE CURVE.......................................... 64 WEIGHT TABLE............................................... 73 11 STRUCTURE AND FUNCTION.......................................... 74 CONTENTS....................................................... 75 GENERAL STRUCTURE.......................................... 76 INTAKE AND EXHAUST SYSTEM.................................. 78 TURBOCHARGER........................................... 86 AFTER-COOLER........................................... 88 ENGINE BODY................................................ 89 CYLINDER HEAD.......................................... 89 VALVE SYSTEM........................................... 90 CYLINDER BLOCK......................................... 92 MAIN CIRCULATION SYSTEM................................ 94 TIMING GEAR............................................ 95 CAMSHAFT, CAM FOLLOWER AND PUSH ROD.................... 96 INJECTION TIMING, VALVE TIMING......................... 97 FLYWHEEL AND FLYWHEEL HOUSING.......................... 98 LUBRICATION SYSTEM.........................................105 LUBRICATION SYSTEM CHART...............................105 OIL PUMP...............................................107 OIL FILTER AND OIL COOLER..............................110 FULL-FLOW FILTER.......................................113 BY-PASS FILTER.........................................114 OIL COOLER.............................................115 FUEL SYSTEM................................................116 FUEL SYSTEM CHART......................................116 PT FUEL PUMP...........................................119 PT FUEL PUMP DRIVE.....................................129 INJECTOR...............................................131 FUEL FILTER............................................132 WATER SEPARATOR........................................134 ANEROID CONTROL VALVE..................................135 COOLING SYSTEM.............................................136 COOLING SYSTEM CHART...................................136 WATER PUMP.............................................138 FAN DRIVE..............................................141 TENSION PULLEY.........................................145 THERMOSTAT.............................................147 CORROSION RESISTOR.....................................148 ACCESSORY..................................................149 AIR COMPRESSOR.........................................149 ELECTRICAL SYSTEM..........................................150 ALTERNATOR.............................................150 STARTING MOTOR.........................................153 ELECTRICAL INTAKE AIR HEATER...........................155 12 TESTING AND ADJUSTING...........................................157 CONTENTS.......................................................158 TESTING AND ADJUSTING INJECTOR AND VALVE CLEARANCE.........159 MEASURING COMPRESSION PRESSURE.............................162 MEASURING BLOW-BY PRESSURE.................................164 MEASURING OIL CONSUMPTION..................................166 MEASURING FUEL PRESSURE....................................168 PT PUMP CALIBRATION DATA...................................169 PT FUEL PUMP PARTS SPECIFICATION...........................181 INJECTOR SPECIFICATION.....................................191 RUN-IN STANDARD............................................192 PERFORMANCE TEST CRITERIA..................................194 TESTING AND ADJUSTING TOOL LIST............................198 TESTING AND ADJUSTING DATA.................................199 TROUBLESHOOTING............................................204 13 DISASSEMBLY AND ASSSEMBLY.......................................226 14 MAINTENANCE STANDARD............................................227 CONTENTS.......................................................228 INTAKE AND EXHAUST SYSTEM..................................229 TURBOCHARGER...........................................229 ENGINE BODY................................................231 CYLINDER HEAD..........................................231 VALVE, VALVE GUIDE.....................................232 CROSSHEAD AND CROSSHEAD GUIDE..........................233 ROCKER LEVER, SHAFT....................................234 CYLINDER BLOCK.........................................235 CRANKSHAFT AND VIBRATION DAMPER........................237 CYLINDER LINER.........................................239 CAMSHAFT...............................................240 CAM FOLLOWER AND PUSH ROD..............................241 GEAR AND GEAR COVER....................................242 CONNECTING ROD.........................................243 PISTON, PISTON RING, PISTION PIN.......................245 FLYWHEEL, FLYWHEEL HOUSING, REAR COVER.................246 LUBRICATION SYSTEM.........................................247 OIL PUMP...............................................247 COOLING SYSTEM.............................................249 WATER PUMP AND IDLER PULLEY............................249 15 REPAIR AND REPLACEMENT..........................................250 CONTENTS.......................................................251 CYLINDER HEAD..............................................252 GRINDING AND CORRECTING CYLINDER HEAD MOUNTING FACE....252 REPLACING VALVE SEAT INSERTS...........................253 GRINDING AND CORRECTING VALVE SEATS SURFACE............256 REPLACING INJECTOR SLEEVES.............................257 REPLACING VALVE GUIDES.................................260 REPLACING CROSSHEAD GUIDES.............................261 GRINDING AND CORRECTING VALVES.........................261 REPLACING ROCKER LEVER BUSHINGS........................261 CYLINDER BLOCK.............................................262 GRINDING AND CORRECTING TOP FACE OF CYLINDER BLOCK.....262 CORRECTING CYLINDER LINER COUNTERBORE..................263 REPLACING MAIN BEARING CAPS............................264 GRINDING AND CORRECTING CRANKSHAFT.....................268 CORRECTING SLEEVES AT CRANKSHAFT REAR SEAL.............272 REPLACING CAMSHAFT BUSHING.............................273 REPLACING CONNECTING ROD BUSHING.......................274 REPLACING CAM FOLLOWER LEVER BUSHING...................275 REPLACING CRANKSHAFT GEAR..............................276 REPLACING CAMSHAFT GEAR................................276 REPLACING FLYWHEEL RING GEAR...........................276 19 OTHERS..........................................................277 CONTENTS.......................................................278 STANDARD TIGHTENING TORQUE.................................279
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