Related Manuals for Case 4HK1-6HK1
Summary of Contents for Case 4HK1-6HK1
- Page 1 SERVICE MANUAL 4HK1-6HK1 ISUZU ENGINES 9-44061 NA Replaces 9-44060 NA Revised 05-2006 Issued 02-2006...
- Page 2 SERVICE MANUAL 4HK1-6HK1 ISUZU ENGINES Bur • Issued 05-2006 Printed in U.S.A. • Book/Form Number 9-44061 NA Copyright © 2006. CNH America, LLC. All Rights Reserved. Find manuals at https://best-manuals.com...
- Page 3 CNH America, LLC reserves the right to make improvements in design or changes in specifications at any time without incurring any obligation to install them on units previously sold. All data given in this publication is subject to production variations. Dimensions and weights are only approximate. Illustrations do not necessarily show products in standard condition.
- Page 4 INDEX OF CHAPTERS GENERAL INFORMATION ............................ 0A ENGINE MECHANICAL ............................1A COOLING SYSTEM ............................... 1B FUEL SYSTEM............................... 1C ENGINE ELECTRICAL............................1D EXHAUST SYSTEM AND TURBOCHARGER......................1F NOTE: CNH Company reserves the right to make changes in the specification and design of the machine with- out prior notice and without incurring any obligation to modify units previously sold.
- Page 5 IN-2 Introduction UNITS OF MEASURE This manual adopts the units of measure based on International System. The MKSA system units of measure are indicated within brackets after the units of measure of the International System. Example: 24.5 MPa (250 kgf/cm The following table converts the International System units of measure in some of the main units belonging to other system.
- Page 6 General Information 0A-1 GENERAL INFORMATION General Information Contents General Information ..... . . 0A-2 Service Precautions ..... . 0A-2 Reading the model .
- Page 7 0A-2 General Information General Information Service Precautions In order to carry out work safely 1. Always use an engine stand when taking the engine down from the vehicle. Do not place the engine directly onto the ground, or place in a manner that interferes with the oil pan.
- Page 8 General Information 0A-3 8. Always check that there are no fuel leaks when Replacement parts and part numbers. performing maintenance work on the fuel system. (It may cause a fire.) 1. Always replace packing, oil seals, o-rings, caulking lock nuts, folding lock plates, split pins and other such parts with brand new parts.
- Page 9 1207B Three Bond Between cylinder block and – Flywheel housing and – 1207B Three Bond Crankcase Between cylinder block and – Crank case 1207B Three Bond Between cylinder block and – Front cover 1207B Three Bond Cylinder block, head plug nipple, unit, switches Loctite •...
- Page 10 • Gently rest the crank case on the cylinder block, and bolt to the correct torque. apply molybdenum disulphide to the thread section...
- Page 11 0A-6 General Information Reading the model Engine number stamping position 4HK1 WSHK0185...
- Page 12 General Information 0A-7 6HK1 WSHK0186 General information Terminology, description of abbreviations Terminology definitions Term Explanation Maintenance standard The generic name for reference values required for maintenance, such as nominal dimension, selection of a reference point, and limit. Nominal dimension Shows the standard value at the point of manufacture that does not include the common difference.
- Page 13 0A-8 General Information Term Explanation Notes Items that should receive special mention within a work procedure. Description of abbreviations Abbreviation Description Forward Forward Abbreviation Description Fuel Cut Alternating Current Fuel Cut Alternating Current Ground Accessory Earth Accessory Integrated Circuit Alternating Current Generator Integrated circuit Alternating current generator ID Plate...
- Page 14 General Information 0A-9 SI (International System of Units) Abbreviation Description With regards the conversion to SI (International R/H, RH Right Hand System of Units) Right hand side introduction systems aims Relay internationally unify the metric system and the various Relay units used by different countries (traditional weights Standard and measures, the foot pound method etc.), and to...
- Page 15 0A-10 General Information Table of standard Isuzu tightening torque The tightening torque values in the table below apply to all situations unless a special tightening torque is specified. Isuzu standard bolts, nuts N⋅m {kgf⋅m} Strength classification Bolt head Hexagon head bolt Flange bolt Hexagon head bolt Flange bolt...
- Page 16 General Information 0A-11 N⋅m {kgf⋅m} Strength classification Bolt head section Hexagon head bolt Flange bolt Hexagon head bolt Flange bolt shape 5.6 ~ 11.2 {0.6 ~ 6.6 ~ 12.2 {0.6 ~ M6 × 1 — — 1.1} 1.2} 13.4 ~ 25.7 {1.4 ~ 15.3 ~ 28.4 {1.6 ~ 16.7 ~ 30.4 {1.7 ~ 18.1 ~ 33.6 {1.9 ~...
- Page 17 0A-12 General Information Designations for Isuzu standard bolt heads Legend 1. Hexagon head bolt(4.8, 4T) 9. Hexagon head bolt(Un-refined 8.8) 2. Hexagon head bolt(4.8, 4T) 10. Hexagon head bolt(Un-refined 8.8) 3. Flange bolt(4.8, 4T) 11. Flange bolt(8.8) 4. Flange bolt(4.8, 4T) 12.
- Page 18 General Information 0A-13 Taper screw from connectors (brass) N⋅m {kgf⋅m} Screw size PT(R) 1/8 PT(R) 1/4 PT(R) 3/8 PT(R) 1/12 — 2.0 ~ 14.7 4.9 ~ 15.7 9.8 ~ 16.7 9.8 ~ 17.7 (0.2 ~ 1.5) (0.5 ~ 1.6) (1.0 ~ 1.7) (1.0 ~ 1.8)
- Page 19 ENGINE MECHANICAL (4HK1, 6HK1) 1A-1 ENGINE ENGINE MECHANICAL (4HK1, 6HK1) TABLE OF CONTENTS ISUZU DIESEL ENGINE (4HK1, 6HK1) ..1A-3 Inspection ......1A-82 Precautions on Service Work .
- Page 20 1A-2 ENGINE MECHANICAL (4HK1, 6HK1) Function Check ..... . . 1A-158 Special Tool ......1A-159 Oil Port Cover ASM .
- Page 21 ENGINE MECHANICAL (4HK1, 6HK1) 1A-3 ISUZU DIESEL ENGINE (4HK1, 6HK1) Precautions on Service Work Matters that require attention in specifically dealing with this engine. Matters that require attention terms Holes or clearances in the fuel system, which serve as maintenance a passage of fuel, including the inside of the injector, To prevent damage to the engine and ensure reliability are made with extreme precision.
- Page 22 1A-4 ENGINE MECHANICAL (4HK1, 6HK1) How to read the model 4HK1 Name 1. Cast The Engine Model 2. Stamp An Engine Number...
- Page 23 ENGINE MECHANICAL (4HK1, 6HK1) 1A-5 6HK1 WSHK0001 Name 1. Stamp An Engine Number Explanations on functions and operation Cylinder liner The cylinder liner is selected to match an internal Electronic engine control diameter of a bore of the cylinder block and built, which With the control unit, the range from injection to air is imprinted on the left side of the cylinder.
- Page 24 1A-6 ENGINE MECHANICAL (4HK1, 6HK1) EGR system 4HK1 Based upon data, including water temperature, engine speeds or engine loads, it is controlled via Engine Control Module (ECM) to purify exhaust by recycling part of it. Its main components include an EGR valve, an EGR cooler and various sensors.
- Page 25 ENGINE MECHANICAL (4HK1, 6HK1) 1A-7 b. Place a 0.4 mm (0.016 in) thickness gauge • With a thickness gauge kept inserted, tighten between the No. 1 cylinder rocker arm end and an adjusting screw of the bridge lightly and the bridge cap. make sure that the tip of the adjusting screw touches the end of valve axis and the c.
- Page 26 1A-8 ENGINE MECHANICAL (4HK1, 6HK1) Adjustment table (4HK1) Cylinder No. Valve arrangement IN EX IN EX IN EX IN EX No. 1 cylinder Compression top dead center position No. 4 cylinder × × × × Compression top dead center position Adjustment table (6HK1) Cylinder No.
- Page 27 ENGINE MECHANICAL (4HK1, 6HK1) 1A-9 4HK1 WSHK0003 • Attach the harness ASM to the fuel injector. Tighten harness bracket with Name designated torque. 1. Fuel Injector Harness Connector Tightening torque: 48 N⋅m (4.9 kg⋅m/35 lb ft) 6HK1 • Install the terminal nuts on the fuel injector. Tightening torque: 2 N⋅m (0.2 kg⋅m/18 lb in) Note: •...
- Page 28 1A-10 ENGINE MECHANICAL (4HK1, 6HK1) Compression gauge: 5-8840-2675-0 (J-26999-12) Compression gauge adapter 4HK1: EN-46722 6HK1: 380.002.627 • Turn on the starter to inspect compression pressure. 4HK1 Compression pressure MPa (psi) / 200 rpm Standard 2.84 – 3.24 (412 – 469) Limit 1.96 (284) Differences among...
- Page 29 ENGINE MECHANICAL (4HK1, 6HK1) 1A-11 Main Data and Specifications Item Engine model 4HK1 Type Diesel/4-cycle/water cooled-type, inline four-cylinder Combustion chamber form Direct injection type Cylinder liner type Dry type Number of cylinders - cylinder bore × 4-115 (4.53) × 125 (4.92) mm (in) strokes Displacement...
- Page 30 1A-12 ENGINE MECHANICAL (4HK1, 6HK1) Item Engine model 4HK1 Starting system Starter type Reduction type Power output V-kw 24 - 5.0 Preheat system type Glow plug Glow plug standard voltage/electric current 23 - 3.5 Item Engine model 6HK1 Type Diesel/4-cycle/water cooled-type, inline four-cylinder Combustion chamber form Direct injection type Cylinder liner type...
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