Low oil pressure, a knock on combustion or an engine creeping toward overheat can each come from several causes. This book helps you find the right one before you start pulling parts. It is Cummins Service Manual Bulletin 4021592 for the QSK19, QSK19 CM850 MCRS and QSK19 CM2150 MCRS, with Volume 1 and Volume 2 in one file.
It covers industrial, marine, power generation and rail engines from teardown to run-in. That includes the cylinder block, cylinder head, overhead set, fuel, lube and cooling systems, the turbocharger and engine testing. The symptom trees list causes and corrections.
The main bearing, connecting rod and cylinder head torque sequences are in it for when the engine goes back together.
What's Inside This Cummins QSK19, QSK19 CM850 MCRS, QSK19 CM2150 MCRS Manual
| System | Pages | Key Topics |
|---|---|---|
| Volume 1 Introduction and Safety | 1-35 | Foreword, Contents, How to Use the Manual, Symbols, General Safety Instructions, Repair and Cleaning Guidelines, Acronyms |
| Engine and System Identification | 36-61 | Engine Dataplates, Engine Diagrams of QSK19 Industrial and CM850 Heat Exchanger and Keel Cooled Engines, Service Model Nomenclature |
| Familiarization and Flow Diagrams | 62-129 | Fuel, Lubricating Oil, Cooling, Air Intake, Exhaust and Compressed Air Flow Diagrams, Injectors, Engine Mounting |
| Troubleshooting Symptoms | 130-207 | Troubleshooting Procedures and Symptom Trees: Air Compressor, Alternator, Coolant Temperature, Noise, Starting, Smoke, Fuel and Oil Consumption, Oil Pressure |
| Troubleshooting Symptoms (New Format) | 208-251 | ECM No Communication Troubleshooting Tree, Excessive Vibration Troubleshooting |
| Engine Disassembly | 252-331 | Water Pumps, Turbocharger, Wiring Harnesses, Injectors, Cylinder Heads, Fuel Pump, Pistons and Connecting Rods, Crankshaft and Bearings |
| Engine Assembly | 332-485 | Cylinder Liners, Crankshaft and Main Bearings, Pistons, Gear Train, Flywheel Housing, Cylinder Heads, Injectors, Overhead Set, Turbocharger, Harnesses |
| Engine Removal and Cylinder Block | 486-673 | Engine Removal, Installation and Long Term Storage; Connecting Rod, Main and Thrust Bearings, Camshaft, Crankshaft, Cylinder Liners, Pistons, Tone Wheel |
| Cylinder Head | 674-727 | Crossheads, Cylinder Head Inspection and Tightening, Head Gasket, Injector Protrusion |
| Rocker Levers and Cam Followers | 728-817 | Crankcase Breather, Overhead Set (OBC), Rocker Levers, Rocker Housings, Cam Followers, Push Rods |
| Fuel System and Volume 1 Index | 818-864 | Fuel Consumption, Fuel Pump, Fuel Shutoff Valve, Fuel Lift Pump, Volume 1 Index |
| Volume 2 Front Matter | 865-899 | Volume 2 Cover, Foreword, Contents and the Introduction and Safety Section Repeated From Volume 1 |
| Injectors and Fuel Lines | 900-1037 | Air in Fuel, Fuel Filters, Fuel Inlet Restriction, Fuel Supply Lines, Static Injection Timing, Injectors, Fuel Control Valve, High Pressure Supply Lines |
| Lubricating Oil System | 1038-1129 | Oil Cooler, Dipstick, Oil Filters, Oil Pan, Pressure Regulator, Oil Pump, Oil Pressure Diagnostics, Eliminator Filter |
| Cooling System | 1130-1277 | Drive Belts and Fan, Thermostats, Coolant, Radiator and Pressure Cap, Heat Exchanger, Sea Water Pump, Water Pump |
| Drive Units | 1278-1337 | Accessory Drive, Fuel Pump Drive, Hydraulic Pump Drive, Rear Gear Drive, Water Pump Drive |
| Air Intake System | 1338-1429 | Aftercooler, Air Crossover, Intake Manifold, Charge-Air Cooler, Air Intake Restriction, Turbocharger and Its Oil and Coolant Lines |
| Exhaust and Compressed Air Systems | 1430-1523 | Exhaust Manifold Dry and Wet, Exhaust Restriction, Holset Air Compressor, Air Governor |
| Electrical Equipment | 1524-1545 | Alternator, Drive Belt, Battery Cables, Starter Switch, Solenoid and Starting Motor |
| Engine Testing | 1546-1615 | Dynamometer Worksheet, Chassis and Engine Dynamometer Run-In, Run-In Without Dynamometer, Engine Compression Test |
| Mounting Adaptations | 1616-1645 | Front Support Bracket, Flywheel, Flywheel Housing, Ring Gear, Engine Mounts, Rock Shields |
| Service Literature | 1646-1651 | Additional Service Literature List, Ordering Locations, Customized Parts Catalog |
| Specifications | 1652-1799 | Specifications and Torque Values by Group, General Engine, Fuel, Oil, Cooling, Air Intake, Exhaust and Electrical Data, Filter Specifications, Belt Tension, Capscrew Torques, Conversions |
| Volume 2 Index and Foldouts | 1800-1808 | Volume 2 Index, QSK19 CM2150 Industrial Wiring Diagram Foldout, Fault Code Information Foldout |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Displacement | 19 liters [1150 cu in] | p. 1779 |
| Bore and stroke | 158.75 mm x 158.75 mm [6.25 in x 6.25 in] | p. 1779 |
| Firing order | 1, 5, 3, 6, 2, 4 | p. 1779 |
| Intake valve adjustment | 0.36 mm [0.014 in] | p. 1779 |
| Exhaust valve adjustment, electronic injectors | 0.69 mm [0.027 in] | p. 1779 |
| Exhaust valve adjustment, mechanical injectors | 0.81 mm [0.032 in] | p. 1779 |
| Injector OBC method adjustment, mechanical injectors | 19 N•m [165 in-lb] | p. 1779 |
| Compression ratio, engines with electronic injectors | 16.0:1 | p. 1779 |
| Oil pressure at idle, minimum (15W-40 at 107° C) | 138 kPa [20 psi] | p. 1781 |
| Oil pressure at no-load governed speed (15W-40 at 107° C) | 345 to 483 kPa [50 to 70 psi] | p. 1781 |
| Coolant capacity, engine only, electronic injectors | 42.2 liters [44 qt] | p. 1782 |
| Coolant capacity, engine only, hydromechanical injectors | 32.2 liters [34 qt] | p. 1782 |
| Standard modulating thermostat range | 82° to 94°C [180° to 202°F] | p. 1782 |
| Maximum pressure cap relief (at sea level) | 103 kPa [15 psi] | p. 1782 |
| Fuel pump pressure minimum at 1800 rpm, mechanical injectors | 1655 kPa [240 psi] | p. 1780 |
| Fuel inlet restriction maximum, dirty filter, electronic injectors | 34 kPa [10 in-Hg] | p. 1780 |
| Air intake restriction maximum, dirty filter | 635 mm-H₂O [25 in-H₂O] | p. 1783 |
| Main bearing capscrews | 265 N•m [195 ft-lb] → 605 N•m [445 ft-lb] → loosen all → 265 N•m [195 ft-lb] → 605 N•m [445 ft-lb] | p. 526 |
| Cylinder head capscrews | 68 N•m [50 ft-lb] → 203 N•m [150 ft-lb] → 298 N•m [220 ft-lb] → advance 90 degrees | p. 720 |
| Connecting rod capscrews | 102 N•m [75 ft-lb] → 197 N•m [145 ft-lb] → 292 N•m [215 ft-lb] → 366 N•m [270 ft-lb] → loosen both → 102 N•m [75 ft-lb] → 149 N•m [110 ft-lb] | p. 1698 |
