Download Caterpillar C6.6 Diesel (S/N 666 1 & Up) Engine Service Shop Manual

It  is Original service/shop manual covers specifications, mechanical disassembly and assembly, systems operations and testing/adjusting for the Cat C6.6 engine with serial number prefix “666.” The Cat C6.6 Engine Troubleshooting Manual is sold separately.

Topics in the Caterpillar C6.6 Diesel Engine Service Shop Manual:

C6.6 Specifications
C6.6 Disassembly and Assembly
C6.6 Systems Operation
C6.6 Testing and Adjusting
Disassembly and Assembly
Fuel Priming Pump – Remove and Install – Mechanical Priming Pump
Removal Procedure
Installation Procedure (Mechanical Priming Pump)
Fuel Priming Pump – Remove and Install – Electric Fuel Priming Pump
Removal Procedure
Installation Procedure (Electric Fuel Priming Pump)
Fuel Filter Base – Remove and Install – Secondary Fuel Filter
Removal Procedure
Installation Procedure
Fuel Transfer Pump – Remove
Removal Procedure
Fuel Transfer Pump – Install
Installation Procedure
Fuel Manifold (Rail) – Remove and Install
Removal Procedure
Installation Procedure
Fuel Injection Lines – Remove
Removal Procedure
Fuel Injection Lines – Install
Installation Procedure
Fuel Injection Pump – Remove
Removal Procedure
Fuel Injection Pump – Install
Installation Procedure
Fuel Injection Pump Gear – Remove
Removal Procedure
Fuel Injection Pump Gear – Install
Installation Procedure
Electronic Unit Injector – Remove
Removal Procedure
Alternative Removal Procedure
Electronic Unit Injector – Install
Installation Procedure
Alternative Installation Procedure
Turbocharger – Remove – Turbocharger Top Mounted
Removal Procedure
Turbocharger – Remove – Side Mounted Turbocharger
Removal Procedure
Turbocharger – Disassemble
Disassembly Procedure
Turbocharger – Assemble
Assembly Procedure
Turbocharger – Install – Turbocharger Top Mounted
Installation Procedure
Turbocharger – Install – Side Mounted Turbocharger
Installation Procedure
Wastegate Solenoid – Remove and Install
Removal Procedure
Installation Procedure
Exhaust Manifold – Remove and Install – Top Mounted Exhaust Manifold
Removal Procedure
Installation Procedure (Top Mounted Exhaust Manifold)
Exhaust Manifold – Remove and Install – Side Mounted Exhaust Manifold
Removal Procedure
Installation Procedure (Side Mounted Exhaust Manifold)
Exhaust Elbow – Remove and Install
Removal Procedure
Installation Procedure
Inlet Manifold – Remove and Install
Removal Procedure
Installation Procedure
Inlet and Exhaust Valve Springs – Remove and Install
Removal Procedure
Installation Procedure
Inlet and Exhaust Valves – Remove and Install
Removal Procedure
Installation Procedure
Engine Oil Filter Base – Remove and Install
Removal Procedure
Installation Procedure
Engine Oil Cooler – Remove – Engine Oil Cooler with a High Mounted Filter Base
Removal Procedure
Disassembly Procedure (Engine Oil Cooler with a High Mounted Filter Base)
Engine Oil Cooler – Remove – Engine Oil Cooler with a Low Mounted Filter Base
Removal Procedure
Disassembly Procedure (Engine Oil Cooler with a Low Mounted Filter Base)
Engine Oil Cooler – Install – Engine Oil Cooler with a High Mounted Filter Base
Assembly Procedure
Installation Procedure
Engine Oil Cooler – Install – Engine Oil Cooler with a Low Mounted Filter Base
Assembly Procedure
Installation Procedure (Engine Oil Cooler with a Low Mounted Filter Base)
Engine Oil Relief Valve – Remove and Install
Removal Procedure
Installation Procedure
Engine Oil Pump – Remove
Removal Procedure
Engine Oil Pump – Install
Installation Procedure
Water Pump – Remove
Removal Procedure
Water Pump – Install
Installation Procedure
Water Temperature Regulator – Remove and Install
Removal Procedure
Installation Procedure
Flywheel – Remove 114
Removal Procedure
Flywheel – Install 116
Installation Procedure
Crankshaft Rear Seal – Remove 118
Removal Procedure
Crankshaft Rear Seal – Install
Installation Procedure With Oil Pan in Position
Installation Procedure Without Isolating Frame for the Oil Pan
Flywheel Housing – Remove and Install – Wet Back End Housing 124
Removal Procedure
Installation Procedure (Wet Back End Housing)
Flywheel Housing – Remove and Install – Standard Housing 129
Removal Procedure
Installation Procedure (Standard Housing)
Vibration Damper and Pulley – Remove – Pulleys without Split Lock Rings 133
Removal Procedure
Vibration Damper and Pulley – Remove – Pulley with Split Lock Rings 134
Removal Procedure
Vibration Damper and Pulley – Install – Pulley with Split Lock Rings 136
Installation Procedure
Vibration Damper and Pulley – Install – Pulleys without Split Lock Rings 138
Installation Procedure
Crankshaft Front Seal – Remove and Install 140
Removal Procedure
Installation Procedure
Front Cover – Remove and Install 142
Removal Procedure
Installation Procedure
Gear Group (Front) – Remove and Install 144
Removal Procedure
Installation Procedure
Idler Gear – Remove 150
Removal Procedure (Standard Idler Gear)
Removal Procedure (Early Heavy-Duty Idler Gear)
Removal Procedure (Latest Heavy-Duty Idler Gear)
Idler Gear – Install 156
Installation Procedure (Standard Idler Gear)
Installation Procedure (Early Heavy-Duty Idler Gear)
Installation Procedure (Latest Heavy-Duty Idler Gear)
Housing (Front) – Remove 164
Removal Procedure
Housing (Front) – Install 166
Installation Procedure
Accessory Drive – Remove and Install 170
Removal Procedure
Installation Procedure
Crankcase Breather – Remove – Filtered Breather 173
Removal Procedure
Crankcase Breather – Remove – Unfiltered Breather 175
Removal Procedure
Crankcase Breather – Install – Filtered Breather 177
Installation Procedure
Crankcase Breather – Install – Unfiltered Breather 179
Installation Procedure
Valve Mechanism Cover – Remove and Install 181
Removal Procedure
Installation Procedure
Valve Mechanism Cover – Remove and Install – Composite Valve Mechanism Cover 183
Removal Procedure
Installation Procedure
Valve Mechanism Cover Base – Remove and Install 186
Removal Procedure
Installation Procedure
Valve Mechanism Cover Base – Remove and Install – Composite Valve Mechanism Co 190
Removal Procedure
Installation Procedure
Rocker Shaft and Pushrod – Remove 194
Removal Procedure
Rocker Shaft – Disassemble 196
Disassembly Procedure
Rocker Shaft – Assemble 198
Assembly Procedure
Rocker Shaft and Pushrod – Install 200
Installation Procedure
Cylinder Head – Remove 203
Removal Procedure
Cylinder Head – Install 207
Installation Procedure
Lifter Group – Remove and Install 212
Removal Procedure
Installation Procedure
Camshaft – Remove and Install 215
Removal Procedure
Installation Procedure
Camshaft Gear – Remove and Install 218
Removal Procedure
Installation Procedure
Camshaft Bearings – Remove and Install 223
Removal Procedure
Installation Procedure
Engine Oil Pan – Remove – Aluminum Oil Pan 225
Removal Procedure
Engine Oil Pan – Remove – Cast Iron Oil Pan 227
Removal Procedure
Engine Oil Pan – Install – Aluminum Oil Pan 229
Installation Procedure
Engine Oil Pan – Install – Cast Iron Oil Pan 232
Installation Procedure
Engine Oil Pan Plate – Remove and Install – Aluminum Oil Pan 234
Removal Procedure
Installation Procedure
Piston Cooling Jets – Remove and Install 238
Removal Procedure
Installation Procedure
Pistons and Connecting Rods – Remove 240
Removal Procedure
Pistons and Connecting Rods – Disassemble 242
Disassembly Procedure
Pistons and Connecting Rods – Assemble 244
Assembly Procedure
Pistons and Connecting Rods – Install 247
Installation Procedure
Connecting Rod Bearings – Remove – Connecting rods in position 249
Removal Procedure
Connecting Rod Bearings – Install – Connecting rods in position 251
Installation Procedure
Crankshaft Main Bearings – Remove and Install – Crankshaft in position 253
Removal Procedure
Installation Procedure
Crankshaft – Remove 258
Removal Procedure
Crankshaft – Install 261
Installation Procedure
Crankshaft Timing Ring – Remove and Install 265
Removal Procedure
Installation Procedure
Crankshaft Gear – Remove and Install 267
Removal Procedure
Installation Procedure
Bearing Clearance – Check 270
Measurement Procedure
Position Sensor (Fuel Injection Pump) – Remove and Install 272
Removal Procedure
Installation Procedure
Coolant Temperature Sensor – Remove and Install 274
Removal Procedure
Installation Procedure
Engine Oil Pressure Sensor – Remove and Install 276
Removal Procedure
Installation Procedure
Crankshaft Position Sensor – Remove and Install 278
Removal Procedure
Installation Procedure
Fuel Pressure Sensor – Remove and Install 280
Removal Procedure
Installation Procedure
Boost Pressure Sensor – Remove and Install 282
Removal Procedure
Installation Procedure
Inlet Air Temperature Sensor – Remove and Install 284
Removal Procedure
Installation Procedure
Glow Plugs – Remove and Install 286
Removal Procedure
Installation Procedure
Alternator Belt – Remove and Install 288
Removal Procedure
Installation Procedure
Fan – Remove and Install 290
Removal Procedure
Installation Procedure
Fan Drive – Remove and Install 292
Removal Procedure
Installation Procedure
ECM Mounting Bracket – Remove and Install 293
Removal Procedure
Installation Procedure
Electronic Control Module – Remove and Install
Removal Procedure
Installation Procedure
Alternator – Remove – Alternators with Mounting Lugs 300
Removal Procedure
Alternator – Remove – Alternators with Mounting Pads 301
Removal Procedure
Alternator – Install – Alternators with Mounting Pads 302
Installation Procedure
Alternator – Install – Alternators with Mounting Lugs 303
Installation Procedure
Electric Starting Motor – Remove and Install 304
Removal Procedure
Installation Procedure
Air Compressor – Remove and Install 306
Removal Procedure
Installation Procedure
SENR9967-03
Specifications
Engine Design 313
Fuel Injection Lines 314
Manifold to Injector
Pump to Manifold
Fuel Injection Pump 315
Fuel Injection Nozzles 316
Fuel Transfer Pump 317
Fuel Filter Base 318
Fuel Priming Pump 319
Hand Fuel Priming Pump
Electric fuel Priming Pump
Lifter Group 320
Rocker Shaft 321
Valve Mechanism Cover 323
Cylinder Head Valves 324
Cylinder Head 326
Turbocharger 328
Inlet Manifold 329
Exhaust Manifold 330
Exhaust manifold for Top Mounted Turbocharger
Exhaust manifold for Side Mounted Turbocharger
Camshaft 331
Camshaft Bearings 332
Engine Oil Filter Base 333
Engine Oil Cooler 334
Engine Oil Cooler with a Low Mounted Filter Base
Engine Oil Cooler with a High Mounted Filter Base
Engine Oil Pump 336
Engine Oil Pressure 338
Engine Oil Pan 339
The Cast Iron Oil Pan
Crankcase Breather 341
Unfiltered Breather
Filtered Breather
Water Temperature Regulator and Housing 342
Water Pump 343
Cylinder Block 344
Crankshaft 345
Crankshaft Seals 348
The sequence for installation of the rear oil seal
Vibration Damper and Pulley 349
Connecting Rod Bearing Journal 350
Main Bearing Journal 351
The shell for the main bearings
Connecting Rod 352
Piston and Rings 354
Piston
Piston Cooling Jet 356
Piston Cooling Jet Alignment
Front Housing and Covers 357
Gear Group (Front) 359
Flywheel 361
Flywheel Housing 362
Flywheel Housing and Oil Seal
Engine Lifting Bracket 363
Alternator 364
The 12 Volt and 24 volt Denso Alternators
The 24 volt Denso HDB Alternator
The 12 Volt and 24 Volt Iskra Alternator
The 12 Volt Prestolite Alternator
Starter Motor 367
24 Volt Starting Motor 8 Kw
24 Volt Starting Motor 4.5 Kw
12 Volt Starting Motor 3 Kw
12 Volt Starting Motor 5 Kw
Coolant Temperature Sensor 370
Fuel Pressure Sensor 371
Engine Oil Pressure Sensor 372
Boost Pressure Sensor 373
Inlet Manifold Temperature Sensor 374
Crankshaft Position Sensor 375
Electronic Control Module 376
Glow Plugs 377
SENR9968-02
Systems Operation
Introduction 378
Basic Engine 381
Introduction
Cylinder Block
Cylinder head
Pistons, Rings and Connecting rods
Crankshaft
Vibration Damper
Gears and Timing Gear Case
Camshaft
Air Inlet and Exhaust System 386
Turbocharger
Valve System Components
Cooling System 390
Introduction (Cooling System)
Coolant Flow
Lubrication System 391
Electrical System 392
Starting Motor
Alternator
Cleanliness of Fuel System Components 394
Cleanliness of the Engine
Environment
New Components
Refueling
Fuel Injection 395
Introduction (Fuel Injection)
Low Pressure Fuel System
High Pressure Fuel System
Components of the Fuel Injection System
Primary Filter/water Separator
Fuel Priming Pump
Secondary Fuel Filter
Fuel Pump Assembly
Fuel Injection Pump
Fuel Transfer Pump
Shutoff
Control
Fuel Injectors
Fuel Manifold
Electronic Control System 403
Introduction (Electronic Control System)
ECM
Engine Speed Governor
Timing Considerations
Fuel Injection
Diagnostic Codes
Event Codes
Passwords
Speed/Timing Sensor
Pressure Sensors
Temperature Sensors
Power Sources 410
Introduction (Power Supplies)
ECM Power Supply
Power Supply for the Pressure Sensors
Power supply for the Glow plugs
Glossary of Electronic Control Terms 412
Testing and Adjusting
Fuel System – Inspect 417
Measuring Fuel Leakage Past the Fuel Injectors
Air in Fuel – Test 418
Finding Top Center Position for No. 1 Piston 421
Fuel Injection Timing – Check 422
Fuel Quality – Test 424
Fuel System – Prime 425
Hand Fuel Priming Pump
Electric Fuel Priming Pump
Gear Group (Front) – Time 428
Air Inlet and Exhaust System – Inspect 429
Turbocharger – Inspect 431
Inspection of the Compressor and the Compressor Housing
Inspection of the Turbine Wheel and the Turbine Housing
Inspection of the Wastegate
Check the Wastegate for Proper Operation
Compression – Test 435
Engine Valve Lash – Inspect/Adjust 436
Valve Lash Check
Valve Lash Adjustment
Valve Depth – Inspect 440
Valve Guide – Inspect 442
Engine Oil Pressure – Test 443
Low Oil Pressure
High Oil Pressure
Engine Oil Pump – Inspect 444
Excessive Bearing Wear – Inspect 446
Excessive Engine Oil Consumption – Inspect 447
Engine Oil Leaks on the Outside of the Engine
Engine Oil Leaks into the Combustion Area of the Cylinders
Increased Engine Oil Temperature – Inspect 448
Cooling System – Check 449
Engine And Cooling System Heat Problems
Cooling System – Inspect 450
Visual Inspection Of The Cooling System
Cooling System – Test 451
Making the Correct Antifreeze Mixtures
Checking the Filler Cap
Testing The Radiator And Cooling System For Leaks
Engine Oil Cooler – Inspect 454
Engine Oil Cooler with a Low Mounted Filter Base
Engine Oil Cooler with a High Mounted Filter Base
Water Temperature Regulator – Test 457
Water Pump – Inspect 458
Piston Ring Groove – Inspect 459
Inspect the Piston and the Piston Rings
Inspect the Clearance of the Piston Ring
Inspect the Piston Ring End Gap
Connecting Rod – Inspect 461
Length of The Connecting Rod
Piston Pin Bearings
Measure The Length Of The Connecting Rod
Distortion of The Connecting Rod
Cylinder Block – Inspect 464
Cylinder Head – Inspect 465
Resurfacing the Cylinder Head
Piston Height – Inspect 466
Flywheel – Inspect 467
Alignment of the Flywheel Face
Flywheel Runout
Flywheel Housing – Inspect 468
Concentricity of the Flywheel Housing
Alignment of the Flywheel Housing
Gear Group – Inspect 470
Vibration Damper – Check 471
Alternator – Test 473
Battery – Test 474
Charging System – Test 475
Alternator Regulator
V-Belt – Test 476
Poly V-Belt
Electric Starting System – Test 477
General Information
Diagnosis Procedure
Glow Plugs – Test 480
Continuity Check of the Glow Plugs
Checking The Operation of The Glow Plug
9722-01 9967-03 9968-02

Covers: Caterpillar C6.6 Industrial Diesel Engine w/ Serial Number Prefix 666
Pages: 492
Format: PDF
File size: 17mb
Compatibility: Windows/Mac/Tablet
Notes: Instant download only