John Deere PowerTech 6.8L 6068 Compressed Natural Gas Engine Repair Technical Manual CTM146

$40

  • Manual Type: Repair Technical Manual
  • Format: PDF
  • Language: English
  • Print Length: 485 Pages
  • Model: 6068CNG
  • Part Number: CTM146

Description

Details:

  1. Foreword
  2. Safety
  3. Handle Fluids Safely-Avoid Fires
  4. Handle Natural Gas Safely
  5. Prevent Battery Explosions
  6. Prepare for Emergencies
  7. Prevent Acid Burns
  8. Avoid High-Pressure Fluids
  9. Wear Protective Clothing
  10. Service Machines Safely
  11. Work in Ventilated Area
  12. Work in Clean Area
  13. Remove Paint Before Welding or Heating
  14. Avoid Heating Near Pressurized Fluid Lines
  15. Illuminate Work Area Safely
  16. Use Proper Lifting Equipment
  17. Practice Safe Maintenance
  18. Use Proper Tools
  19. Dispose of Waste Properly
  20. Handle Compressed Natural Gas (CNG) Safely
  21. Service Compressed Natural Gas (CNG) Systems Safely
  22. Protect Against High Pressure
  23. Protect Against Extremely Cold CNG Leakage
  24. Live With Safety
  25. General Information
  26. Unified Inch Bolt and Cap Screw Torque Values
  27. Metric Bolt and Cap Screw Torque Values
  28. Engine Model Designation
  29. Engine Serial Number Plate Information
  30. Fuels, Lubricants, and Coolant
  31. Natural Gas Recommendations
  32. Natural Gas Engine Oil
  33. Engine Break-In Oil
  34. Alternative and Synthetic Lubricants
  35. Mixing of Lubricants
  36. OILSCANOILSCAN is a trademark of Deere & Company. and CoolScanCoolScan is a trademark of Deere & Company.
  37. Grease
  38. Recommended Engine Coolant
  39. Engine Coolant Specifications
  40. Testing Diesel Engine Coolant
  41. Replenishing Supplemental Coolant Additives (SCA’s) Between Coolant Changes
  42. Operating in Warm Temperature Climates
  43. Flush and Service Cooling System
  44. Disposing of Coolant
  45. Engine Mounting
  46. Engine Repair Stand
  47. Safety Precautions
  48. Install Adapters on Engine Repair Stand
  49. Engine Lifting Procedure
  50. Clean Engine
  51. Disconnect Turbocharger Oil Inlet Line
  52. Mount Engine on Repair Stand
  53. Engine Mounted on Repair Stand
  54. Engine Rebuild Guide
  55. Engine Disassembly Sequence
  56. Sealant Application Guidelines
  57. Engine Assembly Sequence
  58. Cylinder Head and Valves
  59. Special or Essential Tools
  60. Service Equipment and Tools
  61. Other Material
  62. Cylinder Head and Valves Specifications
  63. Check and Adjust Valve Clearance
  64. Measure Valve Lift
  65. Remove Cylinder Head
  66. Disassemble and Inspect Rocker Arm Shaft Assembly
  67. Assemble Rocker Arm Assembly
  68. Inspect, Measure, and Assemble Camshaft Followers
  69. Measure Valve Recess in Cylinder Head
  70. Preliminary Cylinder Head and Valve Checks
  71. Remove Valve Assembly
  72. Inspect and Measure Valve Springs
  73. Inspect Valve Rotators
  74. Clean Valves
  75. Inspect and Measure Valves
  76. Grind Valves
  77. Inspect and Clean Cylinder Head
  78. Check Cylinder Head Flatness
  79. Measure Cylinder Head Thickness
  80. Clean Valve Guides
  81. Measure Valve Guides
  82. Knurl Valve Guides
  83. Clean and Inspect Valve Seats
  84. Grind Valve Seats
  85. Remove Valve Seat Inserts
  86. Measure Valve Seat Bore in Cylinder Head
  87. Install Valve Seat Inserts
  88. Install Valves
  89. Inspect and Clean Exhaust Manifold
  90. Clean and Inspect Top Deck of Cylinder Block
  91. Measure Cylinder Liner Standout (Height Above Block)
  92. Install Cylinder Head and Cap Screws
  93. Torque-Turn Method for Proper Torque
  94. Install Rocker Arm Assembly
  95. Inspect and Clean Ventilator Outlet Hose
  96. Install Rocker Arm Cover
  97. Complete Final Assembly
  98. Perform Engine Break-In
  99. Cylinder Block, Liners, Pistons, and Rods
  100. Special or Essential Tools
  101. Service Equipment and Tools
  102. Other Material
  103. Cylinder Block, Liners, Pistons, and Rods Specifications
  104. Connecting Rods-General Information
  105. Remove Pistons and Connecting Rods
  106. Remove Cylinder Liners
  107. Complete Disassembly of Cylinder Block (If Required)
  108. Preliminary Liner, Piston and Rod Checks
  109. Disassemble Piston and Rod Assembly
  110. Clean Pistons
  111. Visually Inspect Pistons
  112. Clean Cylinder Liners
  113. Visually Inspect Cylinder Liners
  114. Check Piston Ring Groove Wear
  115. Measure Piston Pin Bore
  116. Measure Piston Skirt
  117. Determine Piston-to-Liner Clearance
  118. Deglaze Cylinder Liners
  119. Replace Piston and Liner Sets
  120. Inspect and Measure Connecting Rod Bearings
  121. Inspect Rod and Cap
  122. Inspect Piston Pins and Bushings
  123. Remove Piston Pin Bushing
  124. Clean and Inspect Connecting Rod Pin Bore
  125. Install Piston Pin Bushing in Connecting Rod
  126. Measure Rod Center-to-Center Bores
  127. Inspect and Clean Cylinder Block
  128. Clean Cylinder Liner O-Ring Bore
  129. Measure Cylinder Block Main Bearing Bore
  130. Measure Camshaft Follower Machined Bore in Block
  131. Measure Camshaft Bushing Bores in Block
  132. Measure Liner Flange Counterbore Depth in Block
  133. Measure Liner Flange Thickness
  134. Measure Cylinder Block Top Deck Flatness
  135. Remove, Inspect, and Install Piston Cooling Orifices
  136. Measure Cylinder Liner Standout (Height Above Block)
  137. Install Packing on Cylinder Liner and O-Rings in Block
  138. Install Cylinder Liner in Block
  139. Assemble Connecting Rods onto Piston
  140. Install Piston Rings
  141. Connecting Rods-General Information
  142. Install Piston and Rod Assembly
  143. Torque-Turn Connecting Rod Cap Screws
  144. Check Engine Rotation for Excessive Tightness
  145. Measure Piston Protrusion
  146. Complete Final Assembly
  147. Crankshaft, Main Bearings, and Flywheel
  148. Special or Essential Tools
  149. Service Equipment and Tools
  150. Other Material
  151. Crankshaft, Main Bearings, and Flywheel Specifications
  152. Crankshaft Grinding Specifications
  153. Crankshaft and Main Bearing Failure Analysis
  154. Inspect Vibration Damper
  155. Remove Pulley or Vibration Damper and Pulley
  156. Install Pulley or Vibration Damper Pulley
  157. Checking Vibration Damper or Pulley
  158. Replace Front Crankshaft Oil Seal and Wear Sleeve (Without Removing Timing Gear Cover)
  159. Check Crankshaft End Play
  160. Inspect Flywheel
  161. Remove Flywheel
  162. Replace Flywheel Ring Gear
  163. Install Flywheel
  164. Crankshaft Rear Oil Seal and Wear Sleeve Handling Precautions
  165. Remove Unitized (Non-Separable) Crankshaft Rear Oil Seal and Wear Sleeve
  166. Install Crankshaft Rear Oil Seal and Wear Sleeve
  167. Remove Flywheel Housing
  168. Remove Crankshaft Main Bearings
  169. Check Main Bearing Oil Clearance
  170. Remove and Install Crankshaft Gear (Crankshaft Installed In Engine)
  171. Remove Crankshaft
  172. Inspect Crankshaft
  173. Measure Assembled Main Bearing ID and OD of Crankshaft Main Journal and Rod Journal
  174. Measure Main Thrust Journal Width and Thrust Bearing Width
  175. Crankshaft Grinding Guidelines
  176. Measure Assembled ID of Main Bearing Caps
  177. Remove, Inspect, and Install Piston Cooling Orifices
  178. Install Main and Thrust Bearing Inserts in Block
  179. Install Crankshaft
  180. Install Flywheel Housing
  181. Complete Final Assembly
  182. Camshaft and Timing Gear Train
  183. Special or Essential Tools
  184. Service Equipment and Tools
  185. Other Material
  186. Camshaft and Timing Gear Train Specifications
  187. Measure Valve Lift
  188. Remove Timing Gear Cover
  189. Remove and Install Camshaft Bushing With Front Plate Installed
  190. Measure Camshaft End Play
  191. Measure Idler Gear End Play
  192. Measure Timing Gear Backlash
  193. Remove Camshaft
  194. Visually Inspect Camshaft
  195. Measure Camshaft Thrust Plate Clearance
  196. Inspect and Measure Camshaft Bushing ID and Journal OD
  197. Measure Camshaft Lobe Height
  198. Remove and Install Camshaft Gear
  199. Inspect Camshaft Followers
  200. Remove Cylinder Block Front Plate
  201. Measure Idler Gear Bushing and Shaft
  202. Remove and Install Idler Gear Bushing
  203. Remove Lower and Upper Idler Shafts
  204. Clean and Inspect Front Plate
  205. Install Idler Shaft Spring Pins
  206. Install Upper Idler Shaft in Front Plate
  207. Install Lower Idler Shaft in Front Plate
  208. Install Engine Front Plate
  209. Install and Time Camshaft
  210. Clean and Inspect Timing Gear Cover
  211. Install Timing Gear Cover
  212. Install Crankshaft Front Wear Sleeve and Oil Seal
  213. Complete Final Assembly
  214. Lubrication System
  215. Special or Essential Tools
  216. Service Equipment and Tools
  217. Other Material
  218. Lubrication System Specifications
  219. Diagnosing Lubrication System Malfunctions
  220. Remove, Inspect, and Install Oil Filter Base
  221. Remove, Inspect, and Install Oil Cooler
  222. Remove, Inspect, and Install Oil Bypass Valve
  223. Remove and Install Oil Pressure Regulating Valve and Seat
  224. Remove and Install Oil Fill Tube
  225. Remove and Install Dipstick Tube With Oil Pan Installed
  226. Replace Oil Pump Pick-Up Tube Assembly
  227. Engine Oil Pump Assembly
  228. Remove Engine Oil Pump
  229. Inspect and Measure Clearances
  230. Complete Oil Pump Disassembly
  231. Assemble Engine Oil Pump
  232. Install Engine Oil Pump
  233. Install Oil Pan
  234. Cooling System
  235. Special or Essential Tools
  236. Service Equipment and Tools
  237. Other Material
  238. Cooling System Specifications
  239. Diagnosing Cooling System Malfunctions
  240. Remove Water Manifold/Thermostat Cover and Thermostat
  241. Test Thermostat
  242. Install Water Manifold/Thermostat Cover and Thermostat
  243. Remove Water Pump
  244. Water Pump Assembly
  245. Disassemble Water Pump
  246. Inspect, Clean, and Measure Water Pump Parts
  247. Assemble Water Pump
  248. Install Water Pump
  249. Remove and Install Automatic (Spring) Belt Tensioner
  250. Checking Belt Tensioner Spring Tension and Belt Wear
  251. Remove and Inspect Idler Pulley Assembly
  252. Replace Bearing in Idler Pulley Assembly
  253. Install Idler Pulley Assembly
  254. Remove and Install Coolant Heater
  255. Air Intake and Exhaust System
  256. Other Material
  257. Air Intake and Exhaust System Specifications
  258. Extending Turbocharger Life
  259. Remove Turbocharger
  260. Turbocharger Failure Analysis
  261. Turbocharger Seven-Step Inspection
  262. Perform Axial Bearing End Play Test
  263. Repair Turbocharger
  264. Clean and Inspect Turbine and Compressor Housings
  265. Adjust Turbocharger Wastegate Actuator
  266. Prelube Turbocharger
  267. Install Turbocharger
  268. Cleaning PCV Orifice
  269. Remove, Inspect, and Install Exhaust Manifold
  270. Remove, Inspect, and Install Intake Manifold
  271. Fuel Supply System
  272. Specifications
  273. Fuel Pressure Leak-Off Procedure
  274. Leak Check Procedure
  275. Remove and Install Natural Gas Regulator
  276. Repair Natural Gas Regulator
  277. Remove and Install Fuel Metering Valve
  278. Repair Fuel Metering Valve
  279. Remove and Install Fuel Mixer
  280. Starting and Charging System
  281. Special or Essential Tools
  282. Specifications
  283. Remove and Install Starter
  284. Bench Test Starting Motor
  285. Make Solenoid Return Test
  286. Make No Load Test
  287. Diagnose No Load Test
  288. Remove and Install Alternator
  289. Charging System Failure
  290. Alternator Troubleshooting
  291. Alternator Output Test
  292. Diode Trio Test
  293. Full Field Test
  294. Electronic Engine Controls
  295. Special or Essential Tools
  296. Service Equipment and Tools
  297. Other Material
  298. Specifications
  299. Remove and Install Spark Plugs
  300. Removal of Seized Spark Plugs (Tool JDG1193 Not Available or Spark Plug Ceramic Stem Has Broken Off)
  301. Remove and Install Ignition Coils
  302. Remove and Install Ignition Control Unit (ICU)
  303. Remove and Install Cam Sensor
  304. Remove and Install Crank Sensor
  305. Remove and Install Engine Coolant Temperature (ECT) Sensor
  306. Remove and Install Foot Pedal Position Sensor
  307. Remove and Install Manifold Absolute Pressure (MAP) Sensor
  308. Remove and Install Manifold Air Temperature (MAT) Sensor
  309. Remove and Install Natural Gas Tank Temperature (NGTT) Sensor
  310. Remove and Install Preturbine Pressure (PTP) Sensor
  311. Remove and Install Exhaust Back Pressure (EBP) Sensor
  312. Remove and Install Electronic Throttle and Throttle Position Sensor
  313. Remove and Install Universal Exhaust Gas Oxygen (UEGO) Sensor
  314. Remove and Install Oil Pressure Switch
  315. Remove and Install Turbocharger Wastegate Control Valve
  316. Natural Gas Engine Wiring Harness
  317. Natural Gas Engine Component Location Diagram
  318. Connectors
  319. Using High-Pressure Washer
  320. Replace WEATHER PACK WEATHER PACK is a trademark of Packard Electric. Connector
  321. Install WEATHER PACK WEATHER PACK is a trademark of Packard Electric. Contact
  322. Remove Connector Body from Blade Terminals
  323. Replace (Pull Type) METRI-PACK METRI-PACK is a trademark of Packard Electric. Connectors
  324. Replace (Push Type) METRI-PACK METRI-PACK is a trademark of Packard Electric. Connectors
  325. Use Electrical Insulating Compound
  326. Replace DEUTSCH DEUTSCH is a trademark of the Deutsch Co. Connectors
  327. Install DEUTSCH DEUTSCH is a trademark of the Deutsch Co. Contact
  328. Miscellaneous Accessories
  329. Other Material
  330. Miscellaneous Accessories Specifications
  331. Remove Air Compressor
  332. Inspecting Air Compressor
  333. Remove Idler Housing
  334. Install Idler Housing
  335. Install Air Compressor
  336. Dealer Fabricated Tools
  337. Dealer Fabricated Tools
  338. DFRG3 Cylinder Liner Holding Fixture

 

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