Case IH DX23 Operating instructions

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87367153 8/05
©2005 CNH America LLC
Printed In U.S.A.
DX23, DX26
REPAIR MANUAL
COMPLETE CONTENTS
SECTION 00 - GENERAL INFORMATION 2..............................
SECTION 10 - ENGINE 3..............................................
SECTION 18 - SINGLE CLUTCH 10......................................
SECTION 21 - TRANSMISSION 11.......................................
SECTION 25 - FWD FRONT AXLE 13....................................
SECTION 27 - DIFFERENTIAL, REAR AXLE 14...........................
SECTION 29 - HYDROSTATIC TRANSMISSION 15........................
SECTION 31 - POWER TAKE-OFF (PTO) 19..............................
SECTION 33 - BRAKES 20..............................................
SECTION 35 - HYDRAULIC SYSTEM 21..................................
SECTION 41 - STEERING 24............................................
SECTION 44 - WHEELS AND TIRES 25..................................
SECTION 55 - ELECTRICAL SYSTEM 26.................................
SECTION 90 - PLATFORM 32...........................................
The following pages are the collation of the contents pages from each section and
chapter of the DX23, DX26 Repair manual. Complete Repair part # 87367148.
The sections used through out all Case IH product Repair manuals may not be used for
each product. Each Repair manual will be made up of one or several books. Each book
will be labeled as to which sections are in the overall Repair manual and which sections
are in each book.
The sections listed above are the sections utilized for the DX23, DX26 Tractors.
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2
SECTION 00 - GENERAL INFORMATION
BOOK 1 - 87367149
Chapter 1 - General Information
CONTENTS
Section Description Page
Introduction 2...................................................................
Precautionary Statements 3.......................................................
Safety 4........................................................................
The Tractor 4....................................................................
Servicing the Tractor 4............................................................
Operating the Tractor 5...........................................................
Driving the Tractor 5..............................................................
Operating the PTO 6.............................................................
Diesel Fuel 6....................................................................
Safety Frame (ROPS) 6..........................................................
Safety Decals 7..................................................................
Instruction Decals 9..............................................................
Product Identification Plate 13....................................................
Universal Symbols 14...........................................................
Specifications -- DX23, DX26 15..................................................
General Dimensions -- DX23, DX26 20.............................................
Minimum Hardware Tightening Torques 23.........................................
Lubricants 25...................................................................
Adjustments 26.................................................................
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3
SECTION 10 - ENGINE
BOOK 1 - 87367149
Chapter 1 - Engine Systems
CONTENTS
Section Description Page
10 000 Specifications 6..................................................................
Cylinder Head 6..............................................................
Cylinder Block 7..............................................................
Piston 7.....................................................................
Piston Ring 8................................................................
Connecting Rod 8............................................................
Crankshaft 9.................................................................
Camshaft 10................................................................
Valves 11....................................................................
Push Rods 12...............................................................
Rocker Arms 12.............................................................
Lubrication System 12........................................................
Cooling System 13...........................................................
Torque Specifications 14.........................................................
Metric Bolt Torque Specifications 14...............................................
Special Tools 15................................................................
Description and Operation -- General Information 16.................................
Identification Chart 16........................................................
Cylinder Head and Valve Train Components 17..................................
Cylinder Block Assembly 17...................................................
Troubleshooting 19..............................................................
Overhaul -- Engine 25...........................................................
Engine Preparation 25.......................................................
Disassembly 25..........................................................
Fuel Injector and Glow Plug 27................................................
Removal 27.............................................................
Oil Pressure Switch 27.......................................................
Removal 27.............................................................
Temperature Sending Switch and Alternator 28..................................
Removal 28.............................................................
Fan, Water Pump, and External Oil Tube 28.....................................
Removal 28.............................................................
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4
SECTION 10 - ENGINE
BOOK 1 - 87367149
Chapter 1 - Engine Systems (Continued)
CONTENTS
Section Description Page
Valve Cover 28..............................................................
Removal 28.............................................................
Rocker Shaft and Push Rod 29................................................
Removal 29.............................................................
Cylinder Head 29............................................................
Removal 29.............................................................
Valve Tappet 29.............................................................
Removal 29.............................................................
Fuel Shut-off Solenoid 30.....................................................
Removal 30.............................................................
Engine Timing Gear Cover 30.................................................
Removal 30.............................................................
Timing Gears and Camshaft 32................................................
Removal 32.............................................................
Oil Sump 32................................................................
Removal 32.............................................................
Oil Suction Pipe and Strainer 33...............................................
Removal 33.............................................................
Connecting Rods, Bearing and Pistons 33......................................
Removal 33.............................................................
Flywheel 34.................................................................
Removal 34.............................................................
Backplate and Oil Seal 34....................................................
Removal 34.............................................................
Crankshaft and Main Bearing 34...............................................
Removal 34.............................................................
18 110 Cylinder Head 35............................................................
Disassembly 35..........................................................
Inspection 35............................................................
Valve Seats 36..............................................................
Inspection 36............................................................
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5
SECTION 10 - ENGINE
BOOK 1 - 87367149
Chapter 1 - Engine Systems (Continued)
CONTENTS
Section Description Page
Valves 37...................................................................
Inspection 37............................................................
Valve Guides 39.............................................................
Inspection 39............................................................
Valve Springs 39............................................................
Inspection 39............................................................
Rocker Arms 40.............................................................
Inspection 40............................................................
Push Rods 40...............................................................
Inspection 40............................................................
Cylinder Head 41............................................................
Assembly 41............................................................
Cylinder Block 41............................................................
Inspection 41............................................................
10 105 Pistons, Piston Rings, and Connecting Rods 42..................................
Disassembly 42..........................................................
Piston 42...................................................................
Inspection 42............................................................
Piston Rings 44.............................................................
Inspection 44............................................................
Connecting Rods 45.........................................................
Inspection 45............................................................
Bearing Oil Clearance Check 47............................................
10 105 Pistons, Piston Rings, and Connecting Rod 47...................................
Assembly 47............................................................
10 103 Crankshaft Main Bearings 48..................................................
Removal 48.............................................................
Inspection 48............................................................
Crankshaft 49...............................................................
Inspection 49............................................................
Crankshaft Journal Wear Limit and Bearing Usage 49............................
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6
SECTION 10 - ENGINE
BOOK 1 - 87367149
Chapter 1 - Engine Systems (Continued)
CONTENTS
Section Description Page
Crankshaft Front Main Bearing (Bushing) 50....................................
Inspection 50............................................................
Replacement 50.........................................................
Crankshaft Main Bearing 51...................................................
Assembly 51............................................................
Port Block 51...............................................................
Removal 51.............................................................
Installation 51............................................................
Timing Gear 52..............................................................
Inspection 52............................................................
Camshaft 52................................................................
Disassembly 52..........................................................
Inspection 53............................................................
Assembly 53............................................................
10 103 Flywheel 54.................................................................
Inspection 54............................................................
Timing Gear Housing 54......................................................
Front Oil Seal and Steering Pump Seal 54......................................
Replacement 54.........................................................
Crankshaft and Bearing Holder 55.............................................
Assembly 55............................................................
Rear Oil Seal and Backplate 55................................................
Assembly 55............................................................
Flywheel 56.................................................................
Installation 56............................................................
Piston and Connecting Rod 56................................................
Installation 56............................................................
Oil Suction Pipe and Suction Strainer 57........................................
Installation 57............................................................
Oil Sump 57................................................................
Installation 57............................................................
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7
SECTION 10 - ENGINE
BOOK 1 - 87367149
Chapter 1 - Engine Systems (Continued)
CONTENTS
Section Description Page
Camshaft and Camshaft Gear 57..............................................
Assembly 57............................................................
Idler Gear, Oil Pump and Injection Timing 58....................................
Installation 58............................................................
Timing Gear Cover 58........................................................
Installation 58............................................................
Crankshaft Pulley 58.........................................................
Installation 58............................................................
Fuel Injection Pump 59.......................................................
Installation 59............................................................
Power Steering Pump 59.....................................................
Installation 59............................................................
Head Gasket 60.............................................................
Cylinder Head 61............................................................
Assembly 61............................................................
Valve Clearance Adjustment 62................................................
Valve Cover 62..............................................................
Installation 62............................................................
Fan, Water Pump and External Oil Tube 63.....................................
Installation 63............................................................
Glow Plug and Connector 63..................................................
Installation 63............................................................
Fuel Injector 63.............................................................
Installation 63............................................................
Fuel Piping 64...............................................................
Installation 64............................................................
Alternator and Temperature Sending Switch 64..................................
Installation 64............................................................
Exhaust Manifold, Radiator, and Air Cleaner 65..................................
Installation 65............................................................
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8
SECTION 10 - ENGINE
BOOK 1 - 87367149
Chapter 1 - Engine Systems (Continued)
CONTENTS
Section Description Page
Description of Operation -- Engine Lubrication System 66.............................
10 206 Engine Oil Filter 69..........................................................
10 304 Oil Pump 69................................................................
Removal 69.............................................................
Inspection 69............................................................
Installation and Adjustment 70.............................................
Engine Oil Pressure Check 71.................................................
Oil Pressure Relief Valve 71...................................................
Removal 71.............................................................
Installation 71............................................................
Oil Consumption 72..........................................................
10 400 Description of Operation -- Cooling System 73......................................
Maintenance 75................................................................
Coolant 75..................................................................
Thermostat 75..............................................................
Water Pump 75.............................................................
Cooling Fan 75..............................................................
Radiator 75.................................................................
Radiator Cap 75.............................................................
Overhaul -- Cooling System 76....................................................
10 406 Radiator 76.................................................................
Removal 76.............................................................
Inspection and Repair 77..................................................
Installation 77............................................................
10 402 Water Pump and Thermostat 78...............................................
Removal 78.............................................................
Inspection and Repair 80..................................................
Assembly 80............................................................
Installation 80............................................................
Compression Test and Tools 82................................................
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9
SECTION 10 - ENGINE
BOOK 1 - 87367149
Chapter 2 - Fuel System
CONTENTS
Section Description Page
Specifications 2..................................................................
10 242 Description and Operation -- Injection Pump 3........................................
10 236 Pumping Elements 5..........................................................
10 214 Delivery Valves 5.............................................................
Troubleshooting -- General 8......................................................
Troubleshooting -- Fuel Injectors 11.................................................
Troubleshooting -- Governor 12...................................................
Troubleshooting -- Engine Breather Valve 13........................................
Injection Pump 14...........................................................
10 214 Removal 14.............................................................
Installation 14............................................................
Timing and Governor Adjustments 15..............................................
10 230 Installation Using Original Pump and Drive Components 15........................
Install a New Pump or Drive Component 15.....................................
Spill-timing Procedure 16.....................................................
Bleeding the Fuel System 20..................................................
Full Screw/High Idle Adjustment 20............................................
10 230 Description of Operation -- Governor 21...........................................
Governor 23................................................................
Disassembly 23..........................................................
Assembly 24............................................................
Adjustments 25..........................................................
10 218 Description and Operation -- Injectors 26...........................................
Injector 27..................................................................
Removal 27.............................................................
Disassembly 28..........................................................
Assembly and Adjustment 28..............................................
Engine Breather Valve 29.....................................................
Removal 30.............................................................
Installation 30............................................................
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