Cummins H, NH, NT Diesel Engine Shop Manual


  • Covers Cummins H, NH, NT series diesel engines (4 and 6 cylinder)
    • 495, 672, 743 ci displacement
    • 4-7/8″ and 5-1/8″ bore
    • See complete model list below
  • 291 pages
  • Downloadable PDF format
  • Bookmarked, searchable, printable
  • 159mb file size
  • Works with Windows/Mac/Tablet/Mobile

The Cummins H, NH, NT shop manual includes specifications, step-by-step instructions and accurate illustrations to aid mechanics with engine overhaul. The complete shop manual was carefully reproduced into digital format from the original dealer manual and is a must for mechanics repairing, servicing or overhauling the engine to the manufacturer’s standards.

Latest edition, dated 1978. PT fuel system manual and wiring diagram not included. Other component literature may be required.


  • Introduction
  • Cylinder Block
    • Cylinder Block, Liners, Crankshaft , Main Bearings, Connecting Rods, Pistons, Rear Cover , Gear Case Cover , Camshaft and Compression Release
  • Cylinder Head
    • Cylinder Head, Inject or Sleeves, Valve Seats, Valve Guides, Springs, Crossheads and Guides
  • Rocker Levers and Housing
  • Cam Followers and Housing
  • Lubricating System
    • Oil Pan, Hose and Tubing, Filters, Cooler, Dipstick and Oil Pump
  • Cooling System
    • Engine Water Pump, Fan Hub, Thermostats, Heat Exchanger, Raw Water Pump and Cooler
  • Drive Unit
  • Air Intake System
  • Exhaust System
  • Electrical Equipment
  • Engine Assembly and Testing
  • Instruments and Controls
  • Flywheel, Flywheel Housing and Marine Gear
  • Specifications
    • Wear Limits, Lubricating Oil , Cooling, Grease and Torque Limits
  • Index

Full model list:

4 cyl.

  • HRC-4
  • NHC-4, N495P130
  • NT-165

6 cyl.

  • H-135, H672C135
  • H-6, H6728160
  • HU-170
  • HR-6 , N743P175
  • HRF-6, H7438190
  • HS-6, H6728210
  • HRS-6, H7438240
  • NH-180
  • NHE-180
  • NHE-195
  • NH-220, N7438220
  • NHS-6, N7438290
  • NHRS-6, N7438320
  • NTE-235, NT743B235
  • NT-6
  • NTO-6, NT743B262
  • NRT-6
  • NRTO-6, NT743B335
  • HHR-6
  • HHRF-6
  • NHH-180
  • NHHE-180
  • NHHE-195
  • NHH-220
  • NHHRS-6
  • NHHT-6
  • NHHTO-6
  • NHHRT-6
  • NHHRTO-6

Example Service Manual PDF Download

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If you have any questions regarding this manual, please contact us and reference the title or SKU.

SKU: CMNS-HNH-SM Category:


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